CN211572256U - Prestressed reinforcement anchoring device of reinforced concrete beam - Google Patents
Prestressed reinforcement anchoring device of reinforced concrete beam Download PDFInfo
- Publication number
- CN211572256U CN211572256U CN201922370508.1U CN201922370508U CN211572256U CN 211572256 U CN211572256 U CN 211572256U CN 201922370508 U CN201922370508 U CN 201922370508U CN 211572256 U CN211572256 U CN 211572256U
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- backing plate
- extrusion head
- fixed
- plate
- anchor backing
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- 238000004873 anchoring Methods 0.000 title claims abstract description 26
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 15
- 230000002787 reinforcement Effects 0.000 title claims description 23
- 238000001125 extrusion Methods 0.000 claims abstract description 49
- 210000002435 tendon Anatomy 0.000 claims abstract description 41
- 238000005520 cutting process Methods 0.000 claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000009826 distribution Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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Abstract
The utility model relates to a prestressed tendon stretching technical field, in particular to a prestressed tendon anchoring device of a reinforced concrete beam, which comprises an anchoring backing plate embedded in concrete, a perforation is arranged on the anchoring backing plate, a prestressed tendon is arranged in the perforation in a penetrating way, one end of the prestressed tendon extending out of a corrugated pipe is fixed with an extrusion head, one end of the perforation close to the extrusion head is provided with an annular plate which is fixed on the anchoring backing plate, one side of the annular plate close to the extrusion head is fixed with a cutting sleeve, the circle center of the cutting sleeve is positioned on the axis of the perforation, a wedge block is fixed on the inner wall of the cutting sleeve, the outer wall of the extrusion head is provided with a chute, the wedge block slides in the chute along the axis direction of the annular plate, after stretching, the prestressed tendon at the other end of the stretching equipment is stressed by reverse tension, the extrusion head is abutted against one end close to the stretching equipment, the wedge-shaped block enables the extrusion head to be more and more compact, and the tensioning effect of the prestressed tendon is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of prestressed reinforcement stretch-draw technique and specifically relates to a prestressed reinforcement anchor of reinforced concrete roof beam is related to.
Background
The prestressed reinforcing bars are usually composed of single or bundled steel wires, prestressed reinforcing bars or steel bars, in the production of the pre-tensioning method, in order to reliably bond with concrete, generally, threaded reinforcing bars, indented steel wires or prestressed reinforcing bars are adopted, in the production of the post-tensioning method, smooth reinforcing bars, smooth steel wires or prestressed reinforcing bars are adopted, and the prestressed reinforcing bars are divided into unbonded prestressed reinforcing bars and bonded prestressed reinforcing bars.
The bonded prestressed tendon is directly bonded with concrete or bonded with the concrete through grouting after tensioning; the unbonded prestressed reinforcing steel is made by coating prestressed steel with plastics, SHANZHI and the like, can be arranged in or out of a concrete structure body and cannot be bonded with concrete, and the tensile force of the prestressed reinforcing steel can only be transmitted to the concrete through an anchorage device and a direction changing device forever.
The utility model discloses a utility model patent that publication number is CN2576837 shows, this utility model patent discloses a carbon fiber prestressed reinforcement anchor, include the prestressed reinforcement extrusion anchor unit that comprises carbon fiber stick (prestressed reinforcement promptly) and extrusion sleeve pipe wherein, prestressed reinforcement extrusion anchor unit is by outer to interior penetrating bearing plate (promptly anchor backing plate), the top is pressed on the outside side of bearing plate and is equipped with a nut, the nut has the internal thread, the external screw thread has been seted up in extrusion sheathed tube outside, through interior, the cooperation of external screw thread, with prestressed reinforcement extrusion anchor unit pass through the one end of nut support assembly at the anchor backing plate.
Although this prestressing tendons anchor can realize the support assembly between prestressing tendons extrusion anchor unit and the anchor backing plate, but by the description above know, in order to realize the prestressing tendons extrusion anchor unit and the assembly between the anchor backing plate, need set up the external screw thread in prestressing tendons extrusion anchor unit extrusion cover's outside, during the concrete use, apply inwards pulling force on the prestressing tendons and pass through on the internal, thread transmission between the external screw thread is to the anchor backing plate, the thread is destroyed easily to the resilience force after the prestressing tendons stretch-draw, make the prestressing tendons can not reach the effect of stretch-draw, can influence the quality of concrete beam.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a prestressed reinforcement anchor of reinforced concrete roof beam, it has the stretch-draw effect that has ensured the prestressed reinforcement, has improved the quality of concrete.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a prestressed reinforcement anchor of reinforced concrete roof beam, is including burying the anchor backing plate in the concrete underground, seted up the perforation on the anchor backing plate, the prestressed reinforcement is worn to establish in the perforation, and the one end that the prestressed reinforcement stretches out the bellows is fixed with the extrusion head, the perforation is close to extrusion head one end and is provided with the annular slab, the annular slab is located between anchor backing plate and the extrusion head, the internal diameter of annular slab equals fenestrate internal diameter, the annular slab is close to extrusion head one side and is fixed with the cutting ferrule, the centre of a circle of cutting ferrule is located fenestrate axis, be fixed with the wedge on the cutting ferrule inner wall, the spout has been seted up on the outer wall of extrusion head, spout one end is close to anchor backing plate one end terminal surface intercommunication with the extrusion head, the wedge slides in the spout along the axis direction of annular.
Through adopting above-mentioned technical scheme, when exerting the tensile force to the prestressing tendons, pass fenestrate one end with the prestressing tendons this moment, at first pass the cutting ferrule, the one end that the cutting ferrule kept away from the annular slab will be stretched out is fixed in the one end of extrusion head towards the anchor backing plate, aim at the wedge with the spout this moment, make the wedge slide in the spout, the other end of prestressing tendons passes through stretch-draw equipment this moment and applys the pulling force to the prestressing tendons, it is fixed with stretch-draw equipment's one end after applying the completion, be located the prestressing tendons of the stretch-draw equipment other end this moment, receive reverse pulling force, extrusion head orientation is close to stretch-draw equipment one end and supports tightly, thereby make extrusion head firm joint in the cutting ferrule, the wedge makes the extrusion head crowd more tight, it destroys the screw thread to be difficult for appearing the resilience.
The utility model discloses further set up to: the inner wall on spout laminating wedge inclined plane is the slope setting, the spout degree of depth that the spout is close to anchor backing plate one end is less than the spout degree of depth that anchor backing plate one end was kept away from to the spout.
Through adopting above-mentioned technical scheme, be the inclined plane through setting up one side on the inclined plane of the wedge of laminating the spout for the spout becomes the wedge groove, and the wedge supports presses in the spout, makes the butt effect better, is difficult to appear the resilience force more and destroys the screw thread, leads to the phenomenon that the stretch-draw effect is not good.
The utility model discloses further set up to: the anchor backing plate is characterized in that a plurality of first holes are formed in the annular plate in a penetrating mode and are distributed in a circular mode, a plurality of second holes are formed in the anchor backing plate, the axis of each first hole coincides with the axis of each second hole, and the first holes are fixedly connected with the second holes through bolts.
Through adopting above-mentioned technical scheme, when the one end that stretch-draw equipment was kept away from to prestressing tendons passed the cutting ferrule, it is downthehole at first hole and second through bolt threaded connection this moment for the annular plate is fixed on the anchor backing plate, has strengthened the steadiness of anchor backing plate.
The utility model discloses further set up to: the one end that the anchor backing plate was kept away from to the extrusion head is provided with the connecting plate, a plurality of the equal fixed connection of extrusion head is close to anchor backing plate one side at the connecting plate, two third holes have been seted up on the connecting plate, two the third hole is central symmetry and sets up, third hole female connection has the regulation lead screw, adjust lead screw one end butt on the anchor backing plate, the other end is fixed with the handle.
Through adopting above-mentioned technical scheme, when the prestressing tendons has been stretched out, both ends have all been fixed this moment, and test after the stretch-draw, prestressing tendons's tensioning effect is less than the default, adjusts lead screw one end butt on the anchor backing plate, rotates the regulation lead screw for the connecting plate slides along the axis direction orientation of cutting ferrule with the extrusion head along the direction of keeping away from the anchor backing plate, and then increases the pulling force of loading on prestressing tendons, reinforcing prestressing tendons's tensioning effect.
The utility model discloses further set up to: the anchor backing plate is close to adjusting screw one side and installs the butt plate, butt plate is close to adjusting screw one side and is fixed with the rod cover, be fixed with ball bearing on the rod cover inner wall, be fixed with the adapter sleeve on the ball bearing inner wall, adjust the screw and keep away from handle one end threaded connection on the adapter sleeve inner wall.
Through adopting above-mentioned technical scheme, when rotating the regulation lead screw, the lead screw rotates together with the adapter sleeve, and ball bearing has reduced the frictional force between regulation lead screw and the adapter sleeve, is convenient for adjust the lead screw and rotates to be convenient for adjust the pulling force on the lead screw fine setting prestressing tendons.
The utility model discloses further set up to: the welding of anchor backing plate is close to butt plate one side has first flange, butt plate is close to anchor backing plate one side and is fixed with the second flange, first flange passes through bolt fixed connection with the second flange.
Through adopting above-mentioned technical scheme, through first flange and second flange, be convenient for fix the butt plate on the anchor backing plate, the in-process of use through bolt fixed connection can, rotate the in-process of adjusting the lead screw, the butt plate is difficult to take place the displacement.
The utility model discloses further set up to: the handle is a T-shaped handle, and a rubber sleeve is sleeved on the handle.
Through adopting above-mentioned technical scheme, be the T font through setting up the handle, the staff of being convenient for rotates the handle, is convenient for finely tune the pulling force on the prestressing tendons, and the rubber sleeve has increased the frictional force between handle and the staff palm, and the staff of being convenient for further rotates the handle.
The utility model discloses further set up to: and reinforcing ribs are fixed on the outer wall of the clamping sleeve.
Through adopting above-mentioned technical scheme, the strengthening rib has strengthened the intensity of cutting ferrule for the prestressing tendons passes through the in-process of stretch-draw equipment stretch-draw, and the cutting ferrule is difficult to take place to warp.
To sum up, the utility model discloses a beneficial technological effect does: by arranging the wedge block and the sliding groove, the wedge block and the extrusion head are more and more tightly extruded in the tensioning process, and the phenomenon that the thread is damaged by resilience force to cause poor tensioning effect is difficult to occur; the annular plate is fixed on the anchoring base plate by arranging the first hole and the second hole, so that the stability of the anchoring base plate is enhanced; the tension on the prestressed tendon can be conveniently finely adjusted by arranging the adjusting screw rod; the friction force between the handle and the palm of the worker is increased by arranging the rubber sleeve, so that the worker can rotate the handle conveniently; through setting up the strengthening rib for the prestressing tendons passes through the in-process of stretch-draw equipment stretch-draw, and the cutting ferrule is difficult to take place to warp.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
fig. 2 is an exploded view at the ferrule portion of the present embodiment;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is an exploded view of the adjusting screw portion of the present embodiment.
Reference numerals: 1. anchoring the base plate; 2. perforating; 3. an extrusion head; 4. an annular plate; 5. a card sleeve; 6. a wedge block; 7. a chute; 8. a first hole; 9. a second hole; 10. a connecting plate; 11. a third aperture; 12. adjusting the lead screw; 13. a handle; 14. a butt joint plate; 15. a rod sleeve; 16. a ball bearing; 17. connecting sleeves; 18. a first flange; 19. a second flange; 20. a rubber sleeve; 21. and (5) reinforcing ribs.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, for the utility model discloses a prestressed reinforcement anchor of reinforced concrete roof beam, including anchor backing plate 1, anchor backing plate 1 is pre-buried in the concrete, and pre-buried in the concrete has the bellows, and anchor backing plate 1 one side is located bellows one end, and one side exposes in the external world.
As shown in fig. 2 and 3, a plurality of perforation 2 has been seted up on anchor backing plate 1, a plurality of perforation 2 is circular distribution on anchor backing plate 1, perforation 2 communicates with the inner chamber of bellows, wear to be equipped with prestressing tendons in the bellows, prestressing tendons wears out from perforation 2, perforation 2 communicates external one end and is provided with annular plate 4, annular plate 4 is located anchor backing plate 1 and is close to external one side, annular plate 4 is kept away from anchor backing plate 1 one side and is run through and has been seted up the first hole 8 of a plurality of, a plurality of second hole 9 has been seted up on anchor backing plate 1, the axis of first hole 8 and the coincidence of the axis in second hole 9, first hole 8 passes through bolted connection with second hole 9 and fixes annular plate on anchor backing plate 1.
As shown in fig. 3, annular plate 4 is kept away from perforation 2 one side and is fixed with cutting ferrule 5, cutting ferrule 5's internal diameter equals annular plate 4's internal diameter, the welding has a plurality of strengthening rib 21 on cutting ferrule 5's the outer wall, a plurality of strengthening rib 21 is circular distribution on cutting ferrule 5's outer wall, be fixed with a plurality of wedge 6 on cutting ferrule 5's the inner wall, a plurality of wedge 6 is circular distribution on cutting ferrule 5's inner wall, the position height that the 6 inclined planes of wedge are close to annular plate 4 one end is greater than the position height that the 6 inclined planes of wedge kept away from annular plate 4 one end.
As shown in fig. 3, the extrusion head 3 slides in the inner chamber of the cutting ferrule 5, the extrusion head 3 is a circular cylindrical body, a plurality of sliding groove 7 is provided on the outer wall of the end of the extrusion head 3 close to the annular plate 4, the wedge block 6 slides in the sliding groove 7, the sliding groove 7 is obliquely arranged with the side of the wedge block 6 which is attached to the inclined surface, the sliding groove 7 is a wedge groove, the height of the inclined surface of the sliding groove 7 close to the end position of the annular plate 4 is less than the height of the inclined surface of the sliding groove 7 away from the end position of the annular plate 4, the inclined surface of the wedge block 6 is attached to the inclined surface of the sliding groove 7, and one end of the prestressed tendon extending into the cutting ferrule.
As shown in fig. 3 and 4, a connecting plate 10 is arranged at one end of each extrusion head 3 far from the anchoring backing plate 1, one ends of the extrusion heads 3 far from the anchoring backing plate 1 are fixedly connected to the connecting plate 10, the connecting plate 10 is a circular plate, two third holes 11 are formed in the connecting plate 10 in a penetrating manner, the two third holes 11 are symmetrically arranged around the center of the connecting plate 10, an adjusting screw 12 is connected to each third hole 11 in a threaded manner, a butt plate 14 is arranged at one side of the anchoring backing plate 1 close to the adjusting screw 12, a first flange 18 is welded at one side of the anchoring backing plate 1 (shown in fig. 1) close to the butt plate 14, a second flange 19 is fixed at one side of the butt plate 14 close to the anchoring backing plate 1 (shown in fig. 1), the first flange 18 and the second flange 19 are fixed through bolts, so that the butt plate 14 is fixed on the anchoring backing plate 1, a rod sleeve 15 is fixed at one side of the butt plate 14, the inner wall of the ball bearing 16 is welded with a connecting sleeve 17, one end of the adjusting screw 12 close to the anchoring backing plate 1 (shown in figure 1) is in threaded connection with the inner wall of the connecting sleeve 17, one end, far away from the connecting sleeve 17, of the adjusting screw 12 is fixed with a handle 13, the handle 13 is T-shaped, the handle 13 is sleeved with a rubber sleeve 20, the rubber sleeve 20 increases friction force between the handle 13 and the palm of a worker, and the worker can rotate the handle 13 conveniently.
The implementation principle of the embodiment is as follows: when a tensile force is applied to the prestressed tendon, the prestressed tendon penetrates through one end of the through hole 2 at the moment, firstly penetrates through the clamping sleeve 5, one end, which extends out of the clamping sleeve 5 and is far away from the annular plate 4, is fixed at one end, which faces the anchoring base plate 1, of the extrusion head 3, at the moment, the sliding groove 7 is aligned to the wedge block 6, so that the wedge block 6 slides in the sliding groove 7, at the moment, the other end of the prestressed tendon applies a tensile force to the prestressed tendon through a tensioning device, after the application is completed, one end of the tensioning device is fixed, at the moment, the prestressed tendon at the other end of the tensioning device is subjected to a reverse tensile force, one end, which faces the tensioning device, of the extrusion head 3 is abutted, so that the extrusion head 3 is firmly clamped in the clamping sleeve 5, the wedge block 6 enables the extrusion head 3 to be more and more tight extrusion, when the tensile force on the prestressed tendon needs, because the connecting plate 10 is connected with the adjusting screw 12 in a threaded manner, when the adjusting screw 12 is rotated, the connecting plate 10 together with the extrusion head 3 slides along the axis direction of the clamping sleeve 5 towards the direction far away from the anchoring base plate 1, so that the tensile force loaded on the prestressed tendons is increased, and the tensioning effect of the prestressed tendons is enhanced.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a prestressed reinforcement anchor of reinforced concrete roof beam, is including burying anchor backing plate (1) in the concrete underground, seted up perforation (2) on anchor backing plate (1), its characterized in that is worn to establish in perforation (2) by the prestressed reinforcement: the one end that the prestressing tendons stretches out the bellows is fixed with extrusion head (3), it is provided with annular plate (4) to perforate (2) near extrusion head (3) one end, annular plate (4) are located between anchor backing plate (1) and extrusion head (3), the internal diameter of annular plate (4) equals the internal diameter of perforation (2), annular plate (4) are close to extrusion head (3) one side and are fixed with cutting ferrule (5), the centre of a circle of cutting ferrule (5) is located the axis of perforation (2), be fixed with wedge (6) on cutting ferrule (5) inner wall, spout (7) have been seted up on the outer wall of extrusion head (3), spout (7) one end and extrusion head (3) are close to anchor backing plate (1) one end terminal surface intercommunication, wedge (6) slide in spout (7) along the axis direction of annular plate (4).
2. The prestressed reinforcement anchoring apparatus for a reinforced concrete beam according to claim 1, wherein: the inner wall on spout (7) laminating wedge (6) inclined plane is the slope setting, spout (7) degree of depth that spout (7) are close to anchor backing plate (1) one end is less than spout (7) degree of depth that spout (7) kept away from anchor backing plate (1) one end.
3. A prestressed reinforcement anchoring apparatus for a reinforced concrete beam according to claim 2, wherein: run through on annular plate (4) and seted up a plurality of first hole (8), a plurality of first hole (8) are circular distribution, a plurality of second hole (9) have been seted up on anchor backing plate (1), the axis in first hole (8) and the axis coincidence in second hole (9), first hole (8) pass through bolt fixed connection with second hole (9).
4. The prestressed reinforcement anchoring apparatus for a reinforced concrete beam according to claim 1, wherein: one end that anchor backing plate (1) was kept away from in extrusion head (3) is provided with connecting plate (10), a plurality of the equal fixed connection of extrusion head (3) is close to anchor backing plate (1) one side at connecting plate (10), two third hole (11), two have been seted up on connecting plate (10) third hole (11) are the centrosymmetric setting, third hole (11) female connection has adjusting screw (12), adjusting screw (12) one end butt is on anchor backing plate (1), and the other end is fixed with handle (13).
5. The prestressed reinforcement anchoring apparatus for a reinforced concrete beam according to claim 4, wherein: anchoring backing plate (1) is close to and adjusts lead screw (12) one side and installs butt plate (14), butt plate (14) are close to and adjust lead screw (12) one side and are fixed with rod cover (15), be fixed with ball bearing (16) on rod cover (15) inner wall, be fixed with adapter sleeve (17) on ball bearing (16) inner wall, adjust lead screw (12) and keep away from handle (13) one end threaded connection on adapter sleeve (17) inner wall.
6. The prestressed bar anchoring apparatus for a reinforced concrete beam according to claim 5, wherein: the anchor backing plate (1) is close to butt joint board (14) one side welding has first flange (18), butt joint board (14) are close to anchor backing plate (1) one side and are fixed with second flange (19), first flange (18) pass through bolt fixed connection with second flange (19).
7. The prestressed reinforcement anchoring apparatus for a reinforced concrete beam according to claim 4, wherein: the handle (13) is a T-shaped handle (13), and a rubber sleeve (20) is sleeved on the handle (13).
8. The prestressed reinforcement anchoring apparatus for a reinforced concrete beam according to claim 1, wherein: and a reinforcing rib (21) is fixed on the outer wall of the cutting sleeve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370508.1U CN211572256U (en) | 2019-12-25 | 2019-12-25 | Prestressed reinforcement anchoring device of reinforced concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370508.1U CN211572256U (en) | 2019-12-25 | 2019-12-25 | Prestressed reinforcement anchoring device of reinforced concrete beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211572256U true CN211572256U (en) | 2020-09-25 |
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ID=72549405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922370508.1U Expired - Fee Related CN211572256U (en) | 2019-12-25 | 2019-12-25 | Prestressed reinforcement anchoring device of reinforced concrete beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211572256U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761171A (en) * | 2021-01-05 | 2021-05-07 | 安徽理工大学 | Anti-slide pile inserter |
| CN113653074A (en) * | 2021-07-21 | 2021-11-16 | 瑞腾基础工程技术（北京）股份有限公司 | Steel bar self-locking disc and construction method |
-
2019
- 2019-12-25 CN CN201922370508.1U patent/CN211572256U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761171A (en) * | 2021-01-05 | 2021-05-07 | 安徽理工大学 | Anti-slide pile inserter |
| CN113653074A (en) * | 2021-07-21 | 2021-11-16 | 瑞腾基础工程技术（北京）股份有限公司 | Steel bar self-locking disc and construction method |
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Granted publication date: 20200925 |