CN201318027Y - Stretching prestressed strand coupler - Google Patents
Stretching prestressed strand coupler Download PDFInfo
- Publication number
- CN201318027Y CN201318027Y CNU200820227900XU CN200820227900U CN201318027Y CN 201318027 Y CN201318027 Y CN 201318027Y CN U200820227900X U CNU200820227900X U CN U200820227900XU CN 200820227900 U CN200820227900 U CN 200820227900U CN 201318027 Y CN201318027 Y CN 201318027Y
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- stretch
- draw
- core bar
- special
- anchor slab
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Abstract
The utility model relates to a stretching prestressed strand coupler for manufacturing concrete prestressed components, wherein a limiting support base is supported on the outer side of a common anchor plate, the external edge opening of the limiting support base is used to support a tensioning jack through a connection bushing, and the internal edge opening thereof is used to support a special anchor plate, a clip fixed plate is connected on the special anchor plate, a stretching core bar is connected with threads on the other end of a sleeve which is connected with the external circular threads of the special anchor plate, and the stretching core bar is penetrated through the core hole of the tensioning jack, and a nut which is screwed on the external end portion of the stretching core bar is pressed on the external side end of an oil cylinder arranged in the tensioning jack. Through the use of the coupler, the working reserve length of strands can be reduced, the construction cost is reduced, and the quality and the safety of the stretching operation are improved.
Description
Technical field
The utility model relates to a kind of apparatus of making the concrete pre-stress member, specifically a kind of stretch-draw prestressing force steel strand coupling.
Background technology
In concrete structure engineering, prestressed member has obtained extensive use.Apply prestressing force to concrete component, can improve the supporting capacity and the rigidity of concrete component, reduce the use of plain bars.At present, adopting the most widely, prestressed material is exactly a prestress wire; Be arranged on steel strand in the concrete component prestressing force that can make the concrete component affix after by stretch-draw; And the stretch-draw of steel strand is to rely on the stretch-draw jack be arranged on the concrete component two ends to come implementation and operation and finish.Steel strand are when blanking, and certain active length all will be reserved in two ends, are installed on the stretch-draw jack in order to connection.Usually this length is controlled at about 70-80cm, and this part steel strand will be cut off behind the stretch-draw end-of-job, has both caused bigger waste of material, has also increased construction cost.
The utility model content
The purpose of this utility model just provides a kind of stretch-draw prestressing force steel strand coupling, by the use of this coupling, can reduce the work length in reserve of steel strand, thereby reduces construction cost.
The utility model is achieved in that a kind of stretch-draw prestressing force steel strand coupling, support limited position supporting seat in the outside of common anchor slab, the outer bead of spacing supporting seat supports the stretch-draw jack by splice sleeve, the interior bead of spacing supporting seat supports special-purpose anchor slab, on special-purpose anchor slab, be connected to the intermediate plate fixed head, the other end of the sleeve that is threaded with the special-purpose anchor slab cylindrical stretch-draw core bar that is threaded, the stretch-draw core bar passes the core hole of stretch-draw jack, and the nut that spins in the outer end of stretch-draw core bar withstands on the oil cylinder outboard end in the stretch-draw jack.
Essence of the present utility model has provided the coupling arrangement between steel strand and the stretch-draw jack.This coupling arrangement can be installed on the present conventional stretch-draw jack that uses, and steel strand and stretch-draw jack is linked up by this coupling arrangement again, reaches the purpose that reduces steel strand work length in reserve, reduces construction cost thus.
Use of the present utility model can reduce to 25-30cm to the single-ended work length in reserve of steel strand from 70-80cm, and like this, every steel strand that are embedded in the concrete component can reduce about 80-100cm (two ends) more altogether.With the special 32 rice bin beams of railway visitor is example, and every Pin case beam need be with the steel strand about 240, every meter heavily about 1.05Kg of steel strand, and every Pin case beam can be saved steel strand 200-250Kg altogether, examines 1000-1200 unit.For a Liang Chang who produces 600 Pin case beams per year, can year increase 600,000 yuan of profits.
Simultaneously, use the utility model steel wire bundle can be sealed stretch-draw, therefore, when taking place to break the stripped thread situation, steel strand are difficult for flying out, and have also improved the safety of stretch-draw operation thus.The setting of intermediate plate fixed head in the utility model can improve the installation accuracy of special-purpose anchor slab, and then improves the stressed uniformity with each root steel strand of bundle, has improved the stretch-draw operation quality.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, in concrete component, be embedded with 4, three steel strand of three a branch of steel strand after stretch-draw, finally located, become prestressed member by the common anchor slab 1 and the intermediate plate 2 of the cross-under of outer end institute.
The utility model is as the coupling arrangement between steel strand 4 and the stretch-draw jack 10, and its structure is:
Support limited position supporting seat 3 in the outside of common anchor slab 1, bead and outer bead in the outboard end of this spacing supporting seat 3 is provided with, outer bead supports stretch-draw jack 10 by splice sleeve 8, and interior bead supports special-purpose anchor slab 5; Be provided with the steel strand jack hole on special-purpose anchor slab 5, this jack hole is passed and by the intermediate plate clamping and positioning in the termination of steel strand 4; End face at special-purpose anchor slab 5 is connected with intermediate plate fixed head 6 by screw, and the intermediate plate on the special-purpose anchor slab 5 is located; Outer circumference surface car at special-purpose anchor slab 5 is shaped on external screw thread, and an end of sleeve 7 is threaded with special-purpose anchor slab 5, the other end of the sleeve 7 stretch-draw core bar 9 that is threaded; Stretch-draw core bar 9 passes the core hole of stretch-draw jack 10; Be connected with nut 12 in the outer end of stretch-draw core bar 9, nut 12 withstands on the outboard end of the oil cylinder 11 in the stretch-draw jack 10.
Use the concrete tension operation process of this coupling to be:
(1) size is carried out blanking, system bundle and the lashing of steel strand 4 on request, and the cutting length error of steel strand is controlled in the 10mm, and the lashing error is controlled in the 10mm;
(2) common anchor slab 1, spacing supporting seat 3, special-purpose anchor slab 5 and intermediate plate fixed head 6 are installed successively;
(3) when needs stretch-draw, earlier sleeve 7 is screwed onto on the special-purpose anchor slab 6, again stretch-draw core bar 9 is connected on the sleeve 7, put splice sleeve 8 then, stretch-draw jack 10 is installed, at the outboard end fastening nut 12 of stretch-draw core bar 9, after this can begin the stretch-draw operation again;
(4) control stretch-draw jack 10, make oil cylinder 11 overhanging, by core bar 9, sleeve 7 and special-purpose anchor slab 5, the control tonnage is arrived in steel strand 4 stretch-draw, afterwards, the oil cylinder oil return of stretch-draw jack 10, the intermediate plate 2 on the common anchor slab 1 are anchored at (the single-ended retraction of steel strand is not more than 6mm generally speaking) on the common anchor slab 1 to steel strand 4 along with the retraction of steel strand 4;
(5) stretch-draw jack 10 continues oil return, contract in the oil cylinder 11, nut 12 breaks away from stretch-draw jack 10, and can remove nut 12, core bar 9, splice sleeve 8, sleeve 7, intermediate plate fixed head 6, special-purpose anchor slab 5 and support limit device 3 this moment successively, and prepares the tension operation of a branch of steel strand down.
Claims (1)
1, a kind of stretch-draw prestressing force steel strand coupling, it is characterized in that supporting limited supporting seat (3) in the outside of common anchor slab (1), the outer bead of spacing supporting seat (3) supports stretch-draw jack (10) by splice sleeve (8), the interior bead of spacing supporting seat (3) supports special-purpose anchor slab (5), on special-purpose anchor slab (5), be connected to intermediate plate fixed head (6), the other end of the sleeve (7) that is threaded with special-purpose anchor slab (5) the cylindrical stretch-draw core bar (9) that is threaded, stretch-draw core bar (9) passes the core hole of stretch-draw jack, and the nut (12) that spins in the outer end of stretch-draw core bar (9) withstands on oil cylinder (11) outboard end in the stretch-draw jack (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820227900XU CN201318027Y (en) | 2008-12-12 | 2008-12-12 | Stretching prestressed strand coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820227900XU CN201318027Y (en) | 2008-12-12 | 2008-12-12 | Stretching prestressed strand coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318027Y true CN201318027Y (en) | 2009-09-30 |
Family
ID=41196793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820227900XU Expired - Fee Related CN201318027Y (en) | 2008-12-12 | 2008-12-12 | Stretching prestressed strand coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318027Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886477A (en) * | 2010-07-09 | 2010-11-17 | 中冶建工有限公司 | Prestressed tensioning group anchorage single-hole limiting plate |
| CN102704967A (en) * | 2012-05-21 | 2012-10-03 | 严红 | A structure and method for preventing collapse of chamber roof with crossed big sections |
| CN112160506A (en) * | 2020-09-10 | 2021-01-01 | 中冶建筑研究总院有限公司 | Secondary tensioning anchor for unbonded prestressed steel strand and tensioning device and method |
| CN113684769A (en) * | 2021-08-03 | 2021-11-23 | 江阴法尔胜住电新材料有限公司 | Temporary buckling cable force adjusting device for construction of bilateral cantilever type main beam and using method thereof |
| CN113832866A (en) * | 2021-10-29 | 2021-12-24 | 杭州富锚机械有限公司 | Steel strand stretching device for prestressed anchorage device |
-
2008
- 2008-12-12 CN CNU200820227900XU patent/CN201318027Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886477A (en) * | 2010-07-09 | 2010-11-17 | 中冶建工有限公司 | Prestressed tensioning group anchorage single-hole limiting plate |
| CN101886477B (en) * | 2010-07-09 | 2011-08-17 | 中冶建工有限公司 | Prestressed tensioning group anchorage single-hole limiting plate |
| CN102704967A (en) * | 2012-05-21 | 2012-10-03 | 严红 | A structure and method for preventing collapse of chamber roof with crossed big sections |
| CN102704967B (en) * | 2012-05-21 | 2015-09-09 | 中国矿业大学 | One prevents from intersecting large-section underground top board and to collapse method for leakage |
| CN112160506A (en) * | 2020-09-10 | 2021-01-01 | 中冶建筑研究总院有限公司 | Secondary tensioning anchor for unbonded prestressed steel strand and tensioning device and method |
| CN113684769A (en) * | 2021-08-03 | 2021-11-23 | 江阴法尔胜住电新材料有限公司 | Temporary buckling cable force adjusting device for construction of bilateral cantilever type main beam and using method thereof |
| CN113684769B (en) * | 2021-08-03 | 2023-01-13 | 江阴法尔胜住电新材料有限公司 | Temporary buckling cable force adjusting device for construction of bilateral cantilever type main beam and using method thereof |
| CN113832866A (en) * | 2021-10-29 | 2021-12-24 | 杭州富锚机械有限公司 | Steel strand stretching device for prestressed anchorage device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20131212 |