CN204475185U - A kind of low retraction ground tackle - Google Patents
A kind of low retraction ground tackle Download PDFInfo
- Publication number
- CN204475185U CN204475185U CN201520075355.7U CN201520075355U CN204475185U CN 204475185 U CN204475185 U CN 204475185U CN 201520075355 U CN201520075355 U CN 201520075355U CN 204475185 U CN204475185 U CN 204475185U
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- China
- Prior art keywords
- square groove
- anchor slab
- holding nut
- square
- ground tackle
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Abstract
The utility model discloses a kind of low retraction ground tackle, comprise anchor slab and holding nut; Described anchor slab is cylindrical, and the face of cylinder of described cylindrical anchor slab is provided with external screw thread, and described holding nut is connected by screw thread with described anchor slab; The exterior arc surface of described holding nut is provided with square groove, and described square groove is groove in the one end near anchor slab, and described square groove is blind slot in the one end away from anchor slab; Described square groove has six along the circle distribution of holding nut, described six square grooves comprise in the first square groove group four with 90 ° for the equally distributed A square groove of spacing, B square groove, C square groove and D square groove, also comprise the E square groove in the second square groove group and F square groove, the B square groove in described E square groove, F square groove and the first square groove group along described holding nut circumference respectively with 120 ° for spacing is uniformly distributed.The utility model can make ground tackle effectively simple to operate in anchoring operation, and stability is high.
Description
Technical field
The utility model relates to the technical field of anchoring, particularly relates to a kind of low retraction ground tackle.
Background technology
Along with the progress of bridge technology, the application of large-span concrete makes pontic span increasing, this wherein has benefited from the raising of concrete strength, namely by wearing prestressed strand in concrete, pressure is applied to concrete, counteract concrete part tension working load, make concrete intensity improve several times.But occurred in the Prestressed Concrete Bridges of building in early days a lot of beam body cracking, under the bad phenomenon such as to disturb, one of its Causing Factors is that loss of prestress is comparatively large, and this brings danger to the safety operating of bridge.
Prestressed strand is the crucial primary structure member in prestressed bridge girder construction, and loss of prestress has a strong impact on the use safety of bridge, so the prestressed maintenance of steel bundle is very important, so the value of low retraction ground tackle is embodied.But the low retraction ground tackle of operation field use now, mostly operation inconvenience in operation process, and structural stability is not high.
Summary of the invention
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of low retraction ground tackle, and can make ground tackle in anchoring operation, reduce the retraction value of prestressed strand, and this ground tackle is effectively simple to operate, stability is high.
For achieving the above object, the utility model proposes a kind of low retraction ground tackle, comprise anchor slab and holding nut; Described anchor slab is cylindrical, and the face of cylinder of described cylindrical anchor slab is provided with external screw thread, and described holding nut is connected by screw thread with described anchor slab; Described anchor slab is provided with the anchor hole wearing steel bundle, described anchor hole is set to taper hole section away from one end of described holding nut, and the remainder be connected with described taper hole section in described anchor hole is set to straight hole section, and the outboard end of described straight hole section is provided with chamfering; The exterior arc surface of described holding nut is provided with square groove, and described square groove is groove in the one end near anchor slab, and described square groove is blind slot in the one end away from anchor slab; Described square groove has six along the circle distribution of holding nut, described six square grooves comprise in the first square groove group four with 90 ° for the equally distributed A square groove of spacing, B square groove, C square groove and D square groove, also comprise the E square groove in the second square groove group and F square groove, the B square groove in described E square groove, F square groove and the first square groove group along described holding nut circumference respectively with 120 ° for spacing is uniformly distributed.
As preferably, the groove depth of described square groove is 3-8mm, and the length of described square groove is 8-15mm, and the width of described square groove is 7-13mm.
As preferably, the square groove side in the first square groove group is respectively arranged with an index aperture being used for identifying fast.
The beneficial effects of the utility model: the utility model by arranging the first square groove group and the second square groove group on holding nut, when making to construct, instrument takes coordinate at 3 or 4 with the type that the aligning of holding nut can be grabbed according to instrument epirelief, convenient, flexible, and due to square groove symmetrical, holding nut rotate time working stability.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the overall structure figure of a kind of low retraction ground tackle of the utility model;
Fig. 2 is the structure chart of holding nut in the utility model;
Fig. 3 is the front view of a kind of low retraction ground tackle of the utility model;
Fig. 4 is the left pseudosection of a kind of low retraction ground tackle of the utility model.
In figure: 1-anchor slab, 2-holding nut, 3-anchor hole, 4-square groove, 5-index aperture, 31-taper hole section, 32-straight hole section, 33-chamfering, 41-first square groove group, 42-second square groove group, 411-A square groove, 412-B square groove, 413-C square groove, 414-D square groove, 421-E square groove, 422-F square groove.
[detailed description of the invention]
Consult Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the utility model, comprise anchor slab 1 and holding nut 2; Described anchor slab 1 is cylindrical, and the face of cylinder of described cylindrical anchor slab 1 is provided with external screw thread, and described holding nut 2 is connected by screw thread with described anchor slab 1; Described anchor slab 1 is provided with the anchor hole 3 wearing steel bundle, described anchor hole 3 is set to taper hole section 31 away from one end of described holding nut 2, the remainder be connected with described taper hole section 31 in described anchor hole 3 is set to straight hole section 32, and the outboard end of described straight hole section 32 is provided with chamfering 33; The exterior arc surface of described holding nut 2 is provided with square groove 4, and described square groove 4 is groove in the one end near anchor slab 2, and described square groove 4 is blind slot in the one end away from anchor slab 2; Described square groove 4 has six along the circle distribution of holding nut 2, described six square grooves 4 comprise in the first square groove group 41 four with 90 ° for the equally distributed A square groove 411 of spacing, B square groove 412, C square groove 413 and D square groove 414, also comprise the E square groove 421 in the second square groove group 42 and F square groove 422, the B square groove 412 in described E square groove 421, F square groove 422 and the first square groove group along described holding nut 2 circumference respectively with 120 ° for spacing is uniformly distributed.The groove depth of described square groove 4 is 3-8mm, and the length of described square groove 4 is 8-15mm, and the width of described square groove 4 is 7-13mm.Square groove side in the first square groove group 41 is respectively arranged with an index aperture 5 being used for identifying fast.
Utility model works process:
A kind of low retraction ground tackle of the utility model in the course of the work, after anchor slab 1 couple of steel Shu Jinhang stretch-draw terminates, square groove 4 on holding nut 2 coordinates with convex the grabbing on construction tool, when grabbing four if convex, convex grabbing is made to aim at the first square groove group 41 of index aperture 5, when grabbing three if convex, make convexly to grab the second square groove group 42 of aiming at not tape label hole 5, now three convex grab in a meeting automatic alignment first square groove group 41 in B square groove 412, these two kinds of fit systems all can make holding nut 2 rotation stably move down, until contact fastening with concrete, now anchor slab 1 just can not bounce back.
The utility model, by arranging the first square groove group and the second square groove group on holding nut, when making to construct, instrument takes coordinate at 3 or 4 with the type that the aligning of holding nut can be grabbed according to instrument epirelief, because 4 index aperture arranged when coordinating facilitate centering, so convenient mounting and clamping is flexible, and due to square groove symmetrical, holding nut rotate time working stability.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, anyly all belongs to protection domain of the present utility model to the scheme after the utility model simple transformation.
Claims (3)
1. a low retraction ground tackle, is characterized in that: comprise anchor slab (1) and holding nut (2); Described anchor slab (1) is cylindrical, and the face of cylinder of described cylindrical anchor slab (1) is provided with external screw thread, and described holding nut (2) is connected by screw thread with described anchor slab (1); Described anchor slab (1) is provided with the anchor hole (3) wearing steel bundle, described anchor hole (3) is set to taper hole section (31) away from one end of described holding nut (2), the remainder be connected with described taper hole section (31) in described anchor hole (3) is set to straight hole section (32), and the outboard end of described straight hole section (32) is provided with chamfering (33); The exterior arc surface of described holding nut (2) is provided with square groove (4), described square groove (4) is groove in the one end near anchor slab (2), and described square groove (4) is blind slot in the one end away from anchor slab (2); Described square groove (4) has six along the circle distribution of holding nut (2), described six square grooves (4) comprise in the first square groove group (41) four with 90 ° be the equally distributed A square groove (411) of spacing, B square groove (412), C square groove (413) and D square groove (414), also comprise the E square groove (421) in the second square groove group (42) and F square groove (422), the B square groove (412) in described E square groove (421), F square groove (422) and the first square groove group along described holding nut (2) circumference respectively with 120 ° for spacing is uniformly distributed.
2. low retraction ground tackle as claimed in claim 1, is characterized in that: the groove depth of described square groove (4) is 3-8mm, and the length of described square groove (4) is 8-15mm, and the width of described square groove (4) is 7-13mm.
3. low retraction ground tackle as claimed in claim 1, is characterized in that: the square groove side in described first square groove group (41) is respectively arranged with an index aperture (5) being used for identifying fast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075355.7U CN204475185U (en) | 2015-02-03 | 2015-02-03 | A kind of low retraction ground tackle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075355.7U CN204475185U (en) | 2015-02-03 | 2015-02-03 | A kind of low retraction ground tackle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204475185U true CN204475185U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520075355.7U Active CN204475185U (en) | 2015-02-03 | 2015-02-03 | A kind of low retraction ground tackle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204475185U (en) |
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2015
- 2015-02-03 CN CN201520075355.7U patent/CN204475185U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |