CN203373906U - Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision - Google Patents
Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision Download PDFInfo
- Publication number
- CN203373906U CN203373906U CN201320447264.2U CN201320447264U CN203373906U CN 203373906 U CN203373906 U CN 203373906U CN 201320447264 U CN201320447264 U CN 201320447264U CN 203373906 U CN203373906 U CN 203373906U
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- Prior art keywords
- pedestal
- anchor cup
- bevel gear
- screw cap
- cap type
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- Expired - Lifetime
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- 210000002435 tendon Anatomy 0.000 title abstract description 6
- 230000001105 regulatory effect Effects 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000004873 anchoring Methods 0.000 claims abstract description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 34
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 20
- 230000000295 complement effect Effects 0.000 claims description 2
- 210000001364 upper extremity Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
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- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The patent of the utility model discloses a prestressing tendons ground tackle of high accuracy free regulation and control, this ground tackle collect prestressing tendons stretch-draw, high accuracy is adjusted, put functions in an organic whole such as open, the most suitable accurate regulation and control and the putting of steel strand wires that are arranged in single, short bundle of steel strand wires stretch-draw anchor, prestressing force open. The utility model discloses constitute by base, thrust ball bearing, the hollow stud who takes big bevel gear, bevel pinion, nut formula anchor cup and clamping piece. The accurate adjustment and control of the effective working stress of the steel strand can be realized without a jack. The device avoids the use of a jack in the stress adjustment process of the prestressed tendon, saves the tensioning cost, has simple operation, strong safety and high anchoring precision, and has wide application value in the aspects of prestressed tendon tensioning and stress magnitude regulation.
Description
Technical field
The utility model relates to the presstressed reinforcing steel ground tackle that a kind of high accuracy freely regulates and controls
Background technology
In the construction of post-tensioned prestressing rib component, inevitably relate to the stretch-draw of short presstressed reinforcing steel and put and open, under traditional tensioning process, because the loss of prestress that the ground tackle compression rebound causes is quite serious, cause error, have influence on obtaining of conclusion (of pressure testing).Occurred that in recent years some reduce the ground tackle of this loss of prestress, such as, add holding nut outside traditional anchor cup, mend stretch-draw by secondary and again pull out the displacement bounced back in presstressed reinforcing steel anchoring process for the first time, then the precession holding nut to top board keep to mend the stress level after stretch-draw; Also there is the device design directly in retraction displacement, to insert band breach pad, to prevent the presstressed reinforcing steel retraction.Yet existing two times tensioning ground tackle has its shortcoming, its two times tensioning process must be loaded by hydraulic jack, and not only its stress is difficult to high accuracy control, and complex procedures; In addition, must under certain super stretch-draw situation, just can put and open, dangerous high.
The utility model content
In order to solve the problems of the technologies described above, the technical scheme of the utility model patent is, the presstressed reinforcing steel ground tackle that a kind of high accuracy freely regulates and controls, the pedestal that comprises hollow, thrust ball bearing, bottom is provided with the hollow stud of large bevel gear, cone pinion, screw cap type anchor cup and intermediate plate, described base supports is in surface of concrete structure, the pedestal bottom plate central openings is passed for presstressed reinforcing steel, pedestal top board central openings is passed for screw cap type anchor cup, on the sidewall of pedestal, perforate is passed for the rotating shaft of cone pinion, the bottom of the large bevel gear of described hollow stud bottom is connected with pedestal by thrust ball bearing, described cone pinion is arranged on the sidewall of pedestal and the rotating shaft of cone pinion extend out to outside pedestal by the perforate on the pedestal sidewall, cone pinion and large bevel gear mesh to drive large bevel gear and rotate, be provided with internal thread on the inner lower edge inwall of described screw cap type anchor cup, inner upper limb has conical cavity, screw cap type anchor cup is connected with the hollow stud with large bevel gear by internal thread, described intermediate plate be arranged in anchor cup-and-cone shape cavity in order to by steel strand anchoring in screw cap type anchor cup.
The presstressed reinforcing steel ground tackle that described a kind of high accuracy freely regulates and controls, the cylinder body cavity that described pedestal is hollow, the top board opening is regular hexagon, described screw cap type anchor cup is outside is complementary to pass the pedestal top board for regular hexagon and with pedestal top board opening.
The presstressed reinforcing steel ground tackle that described a kind of high accuracy freely regulates and controls, the rotating shaft of described cone pinion is that hexagon is so that twist with spanner.
The technique effect of the utility model patent is, without by jack, directly by spanner, twists cone pinion, can carry out tension of prestressed tendon, stress adjusting and put opening.The conversion setting of large cone pinion, be convenient to the adjusting of stress, can reach the proof stress error and be less than 0.5% effect, and the anchoring precision greatly improved, guaranteed test requirements document.Without super stretch-draw, under original stress level, by spanner, twist cone pinion, can open being put with tensioned prestressing bar.Easy to operate, precision is high, economical and practical, can be widely used in laboratory single in, the anchoring of short bundle presstressed reinforcing steel.
Below in conjunction with accompanying drawing, the utility model patent is described further.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model patent;
The sectional drawing that Fig. 2 is the utility model patent;
Wherein 1 for concrete, 2 for pedestal, 3 for thrust ball bearing, 4 for the hollow stud, 5 of large bevel gear, be cone pinion, 6 for screw cap type anchor cup, 7 for intermediate plate, 8 be steel strand.
The specific embodiment
Referring to Fig. 1, Fig. 2, the utility model comprises pedestal, thrust ball bearing, the hollow stud with large bevel gear, cone pinion, screw cap type anchor cup and intermediate plate.Base supports is in surface of concrete structure, pedestal bottom plate central authorities establish hole and pass for presstressed reinforcing steel, hollow stud with large bevel gear is connected as a single entity by thrust ball bearing and pedestal, cone pinion is arranged on the side of pedestal, can drive the rotation of large bevel gear, screw cap type anchor cup is connected with the hollow stud with large bevel gear by internal whorl, and steel strand are anchored on the anchor cup by intermediate plate.Screw cap type anchor cup outside is regular hexagon, and its size can be passed the reserved hexagonal apertures in pedestal top just.Cone pinion is provided with longer rotating shaft, and the pedestal side is stretched out in rotating shaft, and the extension rotating shaft is hexagon, is convenient to twist with spanner.
Pedestal bottom plate directly is supported in surface of concrete structure, band large bevel gear screw rod is connected with pedestal by thrust ball bearing, steel strand all leave cavity by pedestal bottom plate and screw rod middle part and are anchored on screw cap type anchor cup, twist cone pinion with spanner, drive the rotation of cored screw by large bevel gear, because the rotation of the cup type nut of anchor is limited by the hexagonal apertures at pedestal top, the rotation that spanner turns lower cone pinion can only cause the anchor cup move slowly or descend, thereby reaches the fine adjustment to proof stress.Can carry out the stretch-draw of presstressed reinforcing steel without jack, presstressed reinforcing steel, through after the anchor cup, firmly strikes intermediate plate tightly, twists cone pinion and makes to stretch on the anchor cup, and in intermediate plate, wedge clamps the stretch-draw that realizes presstressed reinforcing steel.While putting, as long as oppositely twist cone pinion, nut is descended.
The course of work is: the first step, regulating nut formula anchor cup makes it near pedestal bottom plate.Second one, through steel strand, and intermediate plate is struck tightly.The 3rd one, twist cone pinion with spanner, by large bevel gear drive screw cap type anchor cup on move, the intermediate plate wedging realizes the anchoring of presstressed reinforcing steel.The 3rd one, the fine setting cone pinion carries out the accuracy controlling of proof stress.The 4th one, twist cone pinion with spanner, drive moving down of screw cap type anchor cup by large bevel gear, realize opening with putting of presstressed reinforcing steel.The bang path of power is: screw cap type anchor cup-and with the cored screw-thrust ball bearing of large bevel gear-pedestal bottom plate-concrete component.
Claims (3)
1. the presstressed reinforcing steel ground tackle that high accuracy freely regulates and controls, it is characterized in that, the pedestal that comprises hollow, thrust ball bearing, bottom is provided with the hollow stud of large bevel gear, cone pinion, screw cap type anchor cup and intermediate plate, described base supports is in surface of concrete structure, the pedestal bottom plate central openings is passed for presstressed reinforcing steel, pedestal top board central openings is passed for screw cap type anchor cup, on the sidewall of pedestal, perforate is passed for the rotating shaft of cone pinion, the large bevel gear of described hollow stud bottom is connected with pedestal by thrust ball bearing, described cone pinion is arranged on the sidewall of pedestal and the rotating shaft of cone pinion extend out to outside pedestal by the perforate on the pedestal sidewall, cone pinion and large bevel gear mesh to drive large bevel gear and rotate, be provided with internal thread on the inner lower edge inwall of described screw cap type anchor cup, inner upper limb has conical cavity, screw cap type anchor cup is connected with the hollow stud with large bevel gear by internal thread, described intermediate plate be arranged in anchor cup-and-cone shape cavity in order to by steel strand anchoring in screw cap type anchor cup.
2. the presstressed reinforcing steel ground tackle that a kind of high accuracy according to claim 1 freely regulates and controls, it is characterized in that, the cylinder body cavity that described pedestal is hollow, the top board opening is regular hexagon, described screw cap type anchor cup is outside is complementary to pass the pedestal top board for regular hexagon and with pedestal top board opening.
3. the presstressed reinforcing steel ground tackle that a kind of high accuracy according to claim 1 freely regulates and controls, is characterized in that, the rotating shaft of described cone pinion is that hexagon is so that twist with spanner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320447264.2U CN203373906U (en) | 2013-07-25 | 2013-07-25 | Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320447264.2U CN203373906U (en) | 2013-07-25 | 2013-07-25 | Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203373906U true CN203373906U (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320447264.2U Expired - Lifetime CN203373906U (en) | 2013-07-25 | 2013-07-25 | Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203373906U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343593A (en) * | 2013-07-25 | 2013-10-09 | 长沙理工大学 | Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision |
| CN105421242A (en) * | 2015-11-17 | 2016-03-23 | 哈尔滨工业大学 | Handheld minitype prestressed wire tensioning device |
| CN106758848A (en) * | 2017-01-19 | 2017-05-31 | 浙江兴土桥梁专用装备制造有限公司 | For the vertical prestressing bar intelligent tensioning equipment and application method of bridge construction |
| CN110593489A (en) * | 2019-10-12 | 2019-12-20 | 中国十七冶集团有限公司 | Low-retraction prestressed tendon anchorage system and use method |
| CN113152793A (en) * | 2021-04-19 | 2021-07-23 | 南京润华建设集团有限公司 | Clamping device for clamping piece type anchorage device |
| CN114922058A (en) * | 2022-07-04 | 2022-08-19 | 长沙理工大学 | Hydraulic support capable of achieving secondary accurate height adjustment |
-
2013
- 2013-07-25 CN CN201320447264.2U patent/CN203373906U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343593A (en) * | 2013-07-25 | 2013-10-09 | 长沙理工大学 | Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision |
| CN105421242A (en) * | 2015-11-17 | 2016-03-23 | 哈尔滨工业大学 | Handheld minitype prestressed wire tensioning device |
| CN106758848A (en) * | 2017-01-19 | 2017-05-31 | 浙江兴土桥梁专用装备制造有限公司 | For the vertical prestressing bar intelligent tensioning equipment and application method of bridge construction |
| CN106758848B (en) * | 2017-01-19 | 2024-03-12 | 浙江兴土桥梁专用装备制造有限公司 | Intelligent vertical prestressed reinforcement tensioning equipment for bridge construction and use method |
| CN110593489A (en) * | 2019-10-12 | 2019-12-20 | 中国十七冶集团有限公司 | Low-retraction prestressed tendon anchorage system and use method |
| CN110593489B (en) * | 2019-10-12 | 2023-11-21 | 中国十七冶集团有限公司 | Low-retraction prestressed tendon anchorage device system and use method thereof |
| CN113152793A (en) * | 2021-04-19 | 2021-07-23 | 南京润华建设集团有限公司 | Clamping device for clamping piece type anchorage device |
| CN113152793B (en) * | 2021-04-19 | 2022-05-17 | 南京润华建设集团有限公司 | Clamping device for clamping piece type anchorage device |
| CN114922058A (en) * | 2022-07-04 | 2022-08-19 | 长沙理工大学 | Hydraulic support capable of achieving secondary accurate height adjustment |
| CN114922058B (en) * | 2022-07-04 | 2024-01-12 | 长沙理工大学 | Hydraulic support capable of being secondarily and accurately heightened |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140101 Effective date of abandoning: 20150812 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140101 Effective date of abandoning: 20150812 |
|
| RGAV | Abandon patent right to avoid regrant |