CN105317007A - Prestressed steel strand combing and penetrating traction head - Google Patents
Prestressed steel strand combing and penetrating traction head Download PDFInfo
- Publication number
- CN105317007A CN105317007A CN201410269754.7A CN201410269754A CN105317007A CN 105317007 A CN105317007 A CN 105317007A CN 201410269754 A CN201410269754 A CN 201410269754A CN 105317007 A CN105317007 A CN 105317007A
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- steel strand
- drawing head
- wedge
- head
- steel
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Abstract
The invention provides a prestressed steel strand combing and penetrating traction head which comprises a traction head body, a steel strand fixing plate and wedge-shaped blocks. The traction head body comprises a front-end spherical head and a rear-end hollow cylinder, the axis of the spherical head is provided with a penetrating traction hole, an inner hole of the hollow cylinder is a taper hole, and the small end of the taper hole is connected with the traction hole; the side wall of the rear end of the traction head body is provided with threaded holes, the steel strand fixing plate is provided with positioning holes of which the number is the same as the strand number of prestressed steel strands, and the wedge-shaped blocks are filled in gaps between the traction head body and the steel strand fixing plate and fixedly connected to the traction head body through screws. The prestressed steel strand combing and penetrating traction head has the advantages that through the limit of the steel strand fixing plate, steel strand twining is avoided, and the phenomenon that the steel strands are stresses evenly when the steel strands are tensioned due to improper strand penetrating is avoided; the structure is simple, assembly and maintenance are convenient, the component stability in work is improved, and even if the steel strands penetrate through a corrugated pipe, the relative positions of the steel strands still can be kept.
Description
Technical field
The invention relates to the utensil that the utility model relates in a kind of prestressing technique operation of shuttling back and forth, and particularly relates to a kind of prestress wire comb and compiles bundle drawing head.
Background technology
Prestress wire is the stranded steel cable having 2,3,7,19 high-tensile steel wires to form, and is applicable to prestressed concrete or similar applications through the process that eliminates stress.
During the construction of construction work prestressing technique, often carry out shuttling back and forth operation, steel strand be walked in the reinforced frame tied, and be arranged to certain shape.Reeve and generally undertaken by workman, need many people to coordinate and wear one by one, waste time and energy, efficiency is low.If steel strand are very long, the difficulty of reeving will be increased.In practical application, prestressed reinforced concrete construction is generally the major bearing structures of bridge, pre-stress construction quality is one of key factor affecting bridge main body construction quality, because the span of bridge is larger, reserved prestressed pore passage length is longer, aperture is less, and how making longer prestress wire accurately pass reserving hole channel is smoothly a construction technology difficult problem.But in the prior art often owing to how to be easily wound around with between steel strand, to intersect, not only increase difficulty when wearing, simultaneously to the deviation that also can cause prestressing force data during steel strand Shi Hanzhang, affect result of use.With each steel strand unbalance stress of bundle, affect its application life, accept large meeting early fatigue fracture, after reaction, cause prestressing force to be lost, and then the downwarp of beam body, to collapse, increase and use danger.
For the ease of traction steel strand, Chinese utility model patent 200820036485.X discloses a kind of steel stranded line rapid traction joint, wherein the design of taper pin improves propulsive efficiency, but joint body is divided into the design that lock sleeve is fixedly connected with by resilient key assembly with lock sleeve, complex structure, improves the difficulty operated in part processing and actual production.Chinese utility model patent 200820035829.5 discloses a kind of prestress wire drawing head, comprise drawing head and prestress steel twist thread fixing plate, wherein, internal thread and the prestress steel twist thread fixing plate external screw thread of drawing head are threaded connection, fixed head positioning bolt is strengthened fastening simultaneously, although simple and compact for structure, fixed head lacks axial restraint, in distraction procedure, steel strand fixed head is connected instability with drawing head, is easily separated.
Summary of the invention
The problem that the invention will solve there is provided a kind of prestress wire comb and compiles bundle drawing head.
For solving the problems of the technologies described above, the technical scheme that the invention adopts is: a kind of prestress wire comb compiles bundle drawing head, comprise drawing head, steel strand fixed head and wedge, described drawing head comprises front end ballhead and rear end hollow cylinder, the axle center of ballhead is provided with through towing pad, the endoporus of hollow cylinder is bellmouth and the small end of bellmouth is connected with towing pad, described drawing head rear end sidewall is provided with screwed hole, described steel strand fixed head is provided with the locating hole of number of share of stock identical with prestress wire, described wedge fills out the space be placed between drawing head and steel strand fixed head, be connected and fixed by dog screw.
Preferably, described wedge comprises front end right-angled triangle block and rear end rectangular block, rectangular block is provided with counter sink, wherein the center line of counter sink overlaps with the center line of drawing head upper screwed hole, the hypotenuse of right-angled triangle block matches with drawing head interior tapered hole, and wedge bottom surface right-angle side is in the part contacted with steel strand fixed head and be not provided with shoulder with the critical part of steel strand fixed head contact portion.
Preferably, described wedge is at least provided with 2, and position set by wedge should keep symmetrical.
Preferably, the locating hole on the outer wall of steel strand and described steel strand fixed head interior along matched in clearance.
The advantage good effect that the invention has is: owing to adopting technique scheme, by the restriction of steel strand fixed head, steel strand unbalance stress when avoiding the winding of steel strand and cause stretch-draw because lashing is improper.The invention structure is simple, convenient for assembly and maintenance, improves stability during component work, even if when passing bellows, still can keep the relative position of many steel strand.
Accompanying drawing explanation
Fig. 1 is the invention structural representation;
Fig. 2 is the invention drawing head structural representation;
Fig. 3 is the invention steel strand fixed plate structure elevation;
Fig. 4 is the invention steel strand fixed plate structure lateral view;
Fig. 5 is the invention steel strand wedge structural representation;
In figure: 1-drawing head, 2-steel strand fixed head, 3-wedge, 4-towing pad, 21-locating hole, 11-screwed hole, 21-counter sink, 5-dog screw.
Detailed description of the invention
A kind of prestress wire comb compiles bundle drawing head, comprise drawing head 1, steel strand fixed head 2 and wedge 3, described drawing head 1 comprises front end ballhead and rear end hollow cylinder, the axle center of ballhead is provided with through towing pad 4, the endoporus of hollow cylinder is bellmouth and the small end of bellmouth is connected with towing pad 4, described drawing head 1 rear end sidewall is provided with screwed hole 11, described steel strand fixed head 2 is provided with the locating hole 21 of number of share of stock identical with prestress wire, described wedge 3 fills out the space be placed between drawing head 1 and steel strand fixed head 2, be connected and fixed by dog screw 5.Described wedge 3 comprises front end right-angled triangle block and rear end rectangular block, rectangular block is provided with counter sink 31, wherein the center line of counter sink 31 overlaps with the center line of drawing head upper screwed hole 11, the hypotenuse of right-angled triangle block matches with drawing head 1 interior tapered hole, and wedge 3 bottom surface right-angle side is in the part contacted with steel strand fixed head 2 and be not provided with shoulder with the critical part of steel strand fixed head 2 contact portion.Described wedge 3 is at least provided with 2, and position set by wedge 3 should keep symmetrical.Locating hole 21 on the outer wall of steel strand and described steel strand fixed head 2 interior along matched in clearance.
Adopt technique scheme, by the restriction of steel strand fixed head, steel strand unbalance stress when avoiding the winding of steel strand and cause stretch-draw because lashing is improper.The invention structure is simple, convenient for assembly and maintenance, improves stability during component work, even if when passing bellows, still can keep the relative position of many steel strand.
Above the embodiment of the invention has been described in detail, but described content being only the preferred embodiment of the invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the invention scope change and improve, and all should still belong within this patent covering scope.
Claims (4)
1. a prestress wire comb compiles bundle drawing head, it is characterized in that: comprise drawing head (1), steel strand fixed head (2) and wedge (3), described drawing head (1) comprises front end ballhead and rear end hollow cylinder, the axle center of ballhead is provided with through towing pad (4), the endoporus of hollow cylinder is bellmouth and the small end of bellmouth is connected with towing pad (4), described drawing head rear end sidewall is provided with screwed hole (11), described steel strand fixed head (2) is provided with the locating hole (21) of number of share of stock identical with prestress wire, described wedge (3) fills out the space be placed between drawing head (1) and steel strand fixed head (2), be connected and fixed by dog screw (5).
2. a kind of prestress wire comb according to claim 1 compiles bundle drawing head, it is characterized in that: described wedge (3) comprises front end right-angled triangle block and rear end rectangular block, rectangular block is provided with counter sink (31), wherein the center line of counter sink (31) overlaps with the center line of drawing head upper screwed hole (11), the hypotenuse of right-angled triangle block matches with drawing head (1) interior tapered hole, wedge (3) bottom surface right-angle side is in the part contacted with steel strand fixed head (2) and be not provided with shoulder with the critical part of steel strand fixed head (2) contact portion.
3. a kind of prestress wire comb according to claim 2 compiles bundle drawing head, it is characterized in that: described wedge (3) is at least provided with 2, and the set position of wedge (3) should keep symmetrical.
4. a kind of prestress wire comb according to claim 1 compiles bundle drawing head, it is characterized in that: the locating hole (21) on the outer wall of steel strand and described steel strand fixed head (2) interior along matched in clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269754.7A CN105317007A (en) | 2014-06-16 | 2014-06-16 | Prestressed steel strand combing and penetrating traction head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269754.7A CN105317007A (en) | 2014-06-16 | 2014-06-16 | Prestressed steel strand combing and penetrating traction head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105317007A true CN105317007A (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410269754.7A Pending CN105317007A (en) | 2014-06-16 | 2014-06-16 | Prestressed steel strand combing and penetrating traction head |
Country Status (1)
| Country | Link |
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| CN (1) | CN105317007A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639330A (en) * | 2017-01-19 | 2017-05-10 | 中国核工业华兴建设有限公司 | Prestressing steel strand bundle overall tractive connection device and using method thereof |
| CN107143752A (en) * | 2017-07-11 | 2017-09-08 | 中铁二十四局集团福建铁路建设有限公司 | A kind of prestress pipe deformation and spillage detector and its application method |
| CN113622681A (en) * | 2021-08-31 | 2021-11-09 | 中建八局西南建设工程有限公司 | Large-span prestressed steel strand pipe-penetrating auxiliary device |
-
2014
- 2014-06-16 CN CN201410269754.7A patent/CN105317007A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639330A (en) * | 2017-01-19 | 2017-05-10 | 中国核工业华兴建设有限公司 | Prestressing steel strand bundle overall tractive connection device and using method thereof |
| CN107143752A (en) * | 2017-07-11 | 2017-09-08 | 中铁二十四局集团福建铁路建设有限公司 | A kind of prestress pipe deformation and spillage detector and its application method |
| CN107143752B (en) * | 2017-07-11 | 2019-06-21 | 中铁二十四局集团福建铁路建设有限公司 | A kind of deformation of prestress pipe and spillage detector and its application method |
| CN113622681A (en) * | 2021-08-31 | 2021-11-09 | 中建八局西南建设工程有限公司 | Large-span prestressed steel strand pipe-penetrating auxiliary device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160210 |