CN2572135Y - Drawing cable type ground tackle clamp piece - Google Patents
Drawing cable type ground tackle clamp piece Download PDFInfo
- Publication number
- CN2572135Y CN2572135Y CN 02254784 CN02254784U CN2572135Y CN 2572135 Y CN2572135 Y CN 2572135Y CN 02254784 CN02254784 CN 02254784 CN 02254784 U CN02254784 U CN 02254784U CN 2572135 Y CN2572135 Y CN 2572135Y
- Authority
- CN
- China
- Prior art keywords
- clamping piece
- utility
- model
- tooth
- ground tackle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a drawing cable type ground tackle clamping piece which is characterized in that inner hole screw threads are circular arc tooth-shaped screw threads in order to enable the utility model to utilize shape tooth tops on a circular tooth-shaped upper part to firmly clamp steel strands, and circular tooth-shaped wide and thick dedendums and a lower tooth shape can effectively avoid damaging the steel strands. Moreover, zigzag outside threads are arranged on the outer cone surface of the drawing cable type ground tackle clamping piece to increase reverse frictional resistance for avoiding the slippage of the clamping piece. The utility model has the advantages of favorable steel strand clamping performance and small extent of damage, and moreover, the clamping piece is not easy to slip in anchor rings; the utility model also has the advantages of higher reliability and higher anchoring efficiency, being a drawing cable type ground tackle clamping piece which is suitable for cable-stayed bridges and arch bridges.
Description
Technical field
The utility model relates to the prestressed tendon anchoring piece that uses in a kind of construction industry, particularly a kind of drag-line anchor clipper.
Background technique
Existing grip sheet for general prestressing force use, its overall structure is round table-like, and axially is provided with an endoporus, the small end endoporus that is positioned at the grip sheet has a dispensing awl, and the hole is provided with the buttress thread form that is processed by screw tap within it, and grip sheet male cone (strobilus masculinus) is the higher plane of degree of finish.After the prestressed anchor stretch-draw, pulling force can reach 20T-21T when the wrong intermediate plate of this kind used as general prestressing force, and it is equivalent to steel strand 0.75 σ
b-0.8 σ
b(σ wherein
bBe song clothes intensity) time edgetone effect, it is difficult for slippage, reliability is better, and on as cable stayed bridge and arch bridge during the stretch-draw end use of drag-line ground tackle, its pulling force is equivalent to 0.25 σ of steel strand
b-0.45 σ
b, in this case, less because of its edgetone effect, so it is easy to slippage, reliability is relatively poor.Simultaneously, this kind grip sheet, use for general prestressing force no matter be, still on the drag-line ground tackle, use, because placing the steel strand of endoporus is interior tooth interlock steel strand by screw thread, arranges closeer teeth and higher thread form and make itself and steel strand interlock surface of contact bigger, so in the anchoring construction process, teeth are bigger to the steel strand degree of injury, and easily produce the phenomenon of rupture that bites.
The model utility content
The utility model is the deficiency that exists in the above-mentioned background technology, provides a kind of good to the steel strand gripping performance, and degree of injury is little, and is difficult for slippage, the drag-line anchor clipper that reliability is high.
Its concrete solution is: the inner hole thread of this drag-line anchor clipper adopts arc toothed screw thread, make it both can utilize the sharp tooth top in circle-arc tooth top clamping steel strand securely, and generous tooth root, the shorter profile of tooth of circle-arc tooth can be avoided the damage to steel strand effectively.And the male cone (strobilus masculinus) of drag-line anchor clipper is provided with the zigzag fashion outside thread, to increase its reverse frictional resistance, avoids this intermediate plate slippage.
The utility model is because inner hole thread adopts arc toothed screw thread and male cone (strobilus masculinus) to be provided with the zigzag fashion outside thread, make it not only good to the steel strand gripping performance, degree of injury is little, and, this intermediate plate is difficult for slippage in anchor ring, reliability and anchoring efficient are higher, are a kind of being suitable for for the drag-line anchor clipper that uses on cable stayed bridge and the arch bridge.
Description of drawings
Fig. 1 is a structural front view of the present utility model.
Fig. 2 is the I portion enlarged view of Fig. 1.
Embodiment
Among Fig. 1, Fig. 2, axially be provided with an endoporus 1, and the small end endoporus of this intermediate plate is a dispensing awl 2, and what this inner hole thread 3 adopted is arc toothed screw thread, the male cone (strobilus masculinus) of this intermediate plate is provided with zigzag fashion outside thread 4.
During the anchoring steel strand, be the sharp tooth top clamping steel strand that utilize the arc toothed screw thread of endoporus, when this intermediate plate is brought into the anchor ring taper hole by steel strand, though the forward frictional resistance slightly increases, but oppositely frictional resistance is because the reverse frictional resistance of the externally threaded effect of zigzag fashion is very big, when the prestressing force amplitude reaches 200MPa-250MPa, this intermediate plate has only positive-displacement, and there is not reverse displacement, when making it positive-displacement by construction roof pressure this intermediate plate and reach certain value, effect will reach stable to the anchor ring peripheral force, realize the purpose of reliable anchoring.
Claims (1)
1, a kind of drag-line anchor clipper, its overall structure is round table-like, and, be provided with a hole (1) that has inner hole thread on it vertically, the arc toothed screw thread that is that it is characterized in that inner hole thread (3) employing, and male cone (strobilus masculinus) is provided with zigzag fashion outside thread (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02254784 CN2572135Y (en) | 2002-09-20 | 2002-09-20 | Drawing cable type ground tackle clamp piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02254784 CN2572135Y (en) | 2002-09-20 | 2002-09-20 | Drawing cable type ground tackle clamp piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2572135Y true CN2572135Y (en) | 2003-09-10 |
Family
ID=33723486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02254784 Expired - Fee Related CN2572135Y (en) | 2002-09-20 | 2002-09-20 | Drawing cable type ground tackle clamp piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2572135Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152143A (en) * | 2011-03-21 | 2011-08-17 | 安徽瑞达机械有限公司 | Concealed clamp device |
-
2002
- 2002-09-20 CN CN 02254784 patent/CN2572135Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152143A (en) * | 2011-03-21 | 2011-08-17 | 安徽瑞达机械有限公司 | Concealed clamp device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |