CN202299135U - Low-retraction anchor device - Google Patents
Low-retraction anchor device Download PDFInfo
- Publication number
- CN202299135U CN202299135U CN201120233085XU CN201120233085U CN202299135U CN 202299135 U CN202299135 U CN 202299135U CN 201120233085X U CN201120233085X U CN 201120233085XU CN 201120233085 U CN201120233085 U CN 201120233085U CN 202299135 U CN202299135 U CN 202299135U
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- Prior art keywords
- anchor
- backing plate
- low
- circle
- low retraction
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Abstract
The utility model discloses a low-retraction anchor device with firm connection and high efficiency. The low-retraction anchor device is characterized in that: a steel strand (7) penetrates through a corrugated pipe (5); a clamping piece (1) is used for clamping the steel strand to be placed into an inner hole of a low-retraction anchor head (2); the low-retraction anchor head is screwed into a low-retraction nut (3); the low-retraction nut is embedded into a seam allowance of a large end of an under-anchor base plate (4); and a spiral rib (6) is sleeved into the seam allowance of the large end from a small end of the under-anchor base plate.
Description
Technical field
The utility model relates to a kind of low retraction ground tackle.
Background technology
At present, low retraction ground tackle exists and connects the shortcoming firm inadequately, that efficient is not high.
Summary of the invention
The purpose of the utility model be exactly to provide a kind of and be connected firmly, low retraction ground tackle that efficient is high, it is characterized in that: steel strand (7) pass in bellows (5); Intermediate plate (1) is clamped steel strand and is inserted low retraction anchor circle (2) endoporus; Low retraction anchor circle revolves to be brought in the low retraction nut (3); Low retraction nut embeds anchor backing plate (4) and holds seam greatly; Spiral bar (6) is inserted in Yu Daduan from the anchor backing plate small end to be ended;
Intermediate plate is formed by two, and the intermediate plate small end face is a taper seat to large end face, and its conical surface angle is 140+4; , locating slot is arranged, locating slot is being the center apart from large end face 4.80-0.1 place.The teeth tooth form of intermediate plate is a pawl shape, and intermediate plate tooth distance is 1.25mm.; Two intermediate plate interlock steel strand are placed in it in corresponding taper hole of work anchor circle;
Low retraction anchor circle profile is the screwed cylinder of cylindrical; The cylindrical thread pitch is fixed, with low retraction nut inner hole threads engaged; One end has the tapered bore of 14 °-35` of respective numbers～14 °-25`, and its other end then is connected with tapered bore for the straight hole of Φ 17.5.Its end face taper hole partly distributes and is determined by stretch-draw steel strand radical; Pack into the intermediate plate of clamping steel strand of respective numbers of low retraction anchor circle taper hole one end; Outer round thread revolves brings corresponding low retraction nut inner hole into;
Low retraction nut profile is the annular cylinder, and there is the internal thread that matches with the low anchor circle external screw thread that bounces back inside; Low retraction nut one end revolves brings low retraction anchor circle into, and an other end embeds in the big end seam of anchor backing plate;
The anchor backing plate inner hollow, and have tapering, its tapering is by the small end internal diameter and the decision of big end internal diameter of anchor backing plate; Profile has the circular tower shape structure on two-layer at least boss rank; The big end of anchor backing plate is by seam, and its degree of depth is 1.5～2.5mm, and diameter is than the big 1.5～2mm of respective anchors circle, between the two-layer boss rank or have tapering or have the stairstepping boss.There is grout hole at the large end face place, holds seam to be nested with the respective anchors circle greatly, and prestressing force is packed into from small end with spiral bar and terminated in the anchor backing plate large end face, and bellows penetrates anchor backing plate small end endoporus;
The bellows profile is the straight tubular cylinder that has helical raised, and inside is cylindrical hole.The one inner engaged and outside junction that has impression is arranged between two helical raised and other adjacent two helical raised; Anchor backing plate is brought at the metal bellows two ends respectively into or an end is brought anchor backing plate stretch-draw end into, and an other end is brought fixed end in the lock ring ring into.Its inner hollow partly is installed with steel strand;
Each spiral coil diameter of spiral bar is consistent, and its each interlamellar spacing equates that bar cross section is circular;
Spiral bar one end endoporus is with respective anchors lower bolster small end, to large end face.
Description of drawings
Fig. 1 is low retraction ground tackle structure principle chart.
The specific embodiment
Specifically introduce below in conjunction with accompanying drawing: Fig. 1 is low retraction ground tackle structure principle chart.In Fig. 1: 1, intermediate plate; 2, low retraction anchor circle; 3, low retraction nut; 4, anchor backing plate; 5, bellows; 6, spiral bar; 7, steel strand.It is characterized in that: steel strand (7) pass in bellows (5); Intermediate plate (1) is clamped steel strand and is inserted low retraction anchor circle (2) endoporus; Low retraction anchor circle revolves to be brought in the low retraction nut (3); Low retraction nut embeds anchor backing plate (4) and holds seam greatly; Spiral bar (6) is inserted in Yu Daduan from the anchor backing plate small end to be ended;
Intermediate plate is formed by two.The intermediate plate small end face is a taper seat to large end face, and its conical surface angle is 140+4; , locating slot is arranged, locating slot is being the center apart from large end face 4.80-0.1 place.The teeth tooth form of intermediate plate is a pawl shape, and intermediate plate tooth distance is 1.25mm.;
Annexation: in the bridge prestress construction, it is placed in the corresponding taper hole of work anchor circle, in the construction of prestressing force bridge, to guarantee the retracted state of steel strand with two intermediate plate interlock steel strand.
Low retraction anchor circle profile is the screwed cylinder of cylindrical; The cylindrical thread pitch is fixed, with low retraction nut inner hole threads engaged; One end has the tapered bore of 14 °-35` of respective numbers～14 °-25`, and its other end then is connected with tapered bore for the straight hole of Φ 17.5.Its end face taper hole partly distributes and is determined by stretch-draw steel strand radical;
Annexation: pack into the intermediate plate of clamping steel strand of respective numbers of low retraction anchor circle taper hole one end.Outer round thread revolves brings corresponding low retraction nut inner hole into.
Low retraction nut:
Component shape: a kind of bridge prestress is used nut.Its profile is the annular cylinder, and there is the internal thread that matches with low retraction anchor circle external screw thread inside.
Annexation: low retraction nut one end revolves brings low retraction anchor circle into, and an other end embeds in the big end seam of anchor backing plate.
Anchor backing plate
Component shape: a kind of circular tower shape anchor backing plate, relate to prestressed a kind of ground tackle parts, this anchor backing plate inner hollow, and have tapering, its tapering is by the small end internal diameter and the decision of big end internal diameter of anchor backing plate; Profile has the circular tower shape structure on two-layer at least boss rank.The big end of anchor backing plate is by seam, and its degree of depth is 1.5～2.5mm, and diameter is used to make things convenient for installation, the connection of anchor circle than the big 1.5～2mm of respective anchors circle.Between the two-layer boss rank or have tapering or have the stairstepping boss.There is grout hole at the large end face place, is used for pouring into cement mortar to bridge inside after stretch-draw is accomplished.
Annexation: hold seam to be nested with the respective anchors circle greatly, prestressing force is packed into from small end with spiral bar and is terminated in the anchor backing plate large end face, and bellows penetrates anchor backing plate small end endoporus.
Bellows
Component shape: a kind of bridge prestress stretching construction is used metal bellows.Its profile is the straight tubular cylinder that has helical raised, and inside is cylindrical hole.The one inner engaged and outside junction that has impression is arranged between two helical raised and other adjacent two helical raised.
Linking relationship: anchor backing plate is brought at the metal bellows two ends respectively into or an end is brought anchor backing plate (stretch-draw end) into, and an other end is brought in the lock ring ring (fixed end).Its inner hollow partly is used for steel strand.
Spiral bar
Component shape: spiral bar is used in a kind of bridge prestress construction, and each spiral coil diameter of this spiral bar is consistent, and its each interlamellar spacing equates that bar cross section is circular.
Annexation: be inserted in respective anchors lower bolster small end with any end endoporus of spiral bar, end to large end face.
Claims (1)
1. one kind is hanged down the retraction ground tackle, and it is characterized in that: steel strand (7) pass in bellows (5); Intermediate plate (1) is clamped steel strand and is inserted low retraction anchor circle (2) endoporus; Low retraction anchor circle revolves to be brought in the low retraction nut (3); Low retraction nut embeds anchor backing plate (4) and holds seam greatly; Spiral bar (6) is inserted in Yu Daduan from the anchor backing plate small end to be ended;
Intermediate plate is formed by two, and the intermediate plate small end face is a taper seat to large end face, and its conical surface angle is 140+4, and locating slot is arranged, and locating slot is being the center apart from large end face 4.80-0.1 place; The teeth tooth form of intermediate plate is a pawl shape, and intermediate plate tooth distance is 1.25mm.; Two intermediate plate interlock steel strand are placed in it in corresponding taper hole of work anchor circle;
Low retraction anchor circle profile is the screwed cylinder of cylindrical; The cylindrical thread pitch is fixed, with low retraction nut inner hole threads engaged; One end has respective numbers 14
0-35`～14
0The tapered bore of-25`, its other end then are connected with tapered bore for the straight hole of Φ 17.5; Its end face taper hole partly distributes and is determined by stretch-draw steel strand radical; Pack into the intermediate plate of clamping steel strand of respective numbers of low retraction anchor circle taper hole one end; Outer round thread revolves brings corresponding low retraction nut inner hole into;
Low retraction nut profile is the annular cylinder, and there is the internal thread that matches with the low anchor circle external screw thread that bounces back inside; Low retraction nut one end revolves brings low retraction anchor circle into, and an other end embeds in the big end seam of anchor backing plate;
The anchor backing plate inner hollow, and have tapering, its tapering is by the small end internal diameter and the decision of big end internal diameter of anchor backing plate; Profile has the circular tower shape structure on two-layer at least boss rank; The big end of anchor backing plate is by seam, and its degree of depth is 1.5～2.5mm, and diameter is than the big 1.5～2mm of respective anchors circle, between the two-layer boss rank or have tapering or have the stairstepping boss; There is grout hole at the large end face place, holds seam to be nested with the respective anchors circle greatly, and prestressing force is packed into from small end with spiral bar and terminated in the anchor backing plate large end face, and bellows penetrates anchor backing plate small end endoporus;
The bellows profile is the straight tubular cylinder that has helical raised, and inside is cylindrical hole; The one inner engaged and outside junction that has impression is arranged between two helical raised and other adjacent two helical raised; Anchor backing plate is brought at the metal bellows two ends respectively into or an end is brought anchor backing plate stretch-draw end into, and an other end is brought fixed end in the lock ring ring into; Its inner hollow partly is installed with steel strand;
Each spiral coil diameter of spiral bar is consistent, and its each interlamellar spacing equates that bar cross section is circular; Spiral bar one end endoporus is with respective anchors lower bolster small end, to large end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120233085XU CN202299135U (en) | 2011-07-05 | 2011-07-05 | Low-retraction anchor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120233085XU CN202299135U (en) | 2011-07-05 | 2011-07-05 | Low-retraction anchor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202299135U true CN202299135U (en) | 2012-07-04 |
Family
ID=46368062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120233085XU Expired - Fee Related CN202299135U (en) | 2011-07-05 | 2011-07-05 | Low-retraction anchor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202299135U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776830A (en) * | 2012-08-10 | 2012-11-14 | 浙江省交通规划设计研究院 | Large-tonnage low-retraction pres-stress anchor and tightening device thereof |
| CN103726447A (en) * | 2013-12-20 | 2014-04-16 | 中交二航局第四工程有限公司 | Method and system for secondary tensioning of low-retraction anchorage system vertical prestressed steel strands |
| CN108425463A (en) * | 2018-02-09 | 2018-08-21 | 柳州欧维姆机械股份有限公司 | A kind of low retraction anchorage of clip type flat and its method for stretching for short beam presstressed reinforcing steel |
-
2011
- 2011-07-05 CN CN201120233085XU patent/CN202299135U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776830A (en) * | 2012-08-10 | 2012-11-14 | 浙江省交通规划设计研究院 | Large-tonnage low-retraction pres-stress anchor and tightening device thereof |
| CN103726447A (en) * | 2013-12-20 | 2014-04-16 | 中交二航局第四工程有限公司 | Method and system for secondary tensioning of low-retraction anchorage system vertical prestressed steel strands |
| CN103726447B (en) * | 2013-12-20 | 2016-12-07 | 中交二航局第四工程有限公司 | Two times tensioning low retraction anchoring system vertical prestressing steel strand wires method and system thereof |
| CN108425463A (en) * | 2018-02-09 | 2018-08-21 | 柳州欧维姆机械股份有限公司 | A kind of low retraction anchorage of clip type flat and its method for stretching for short beam presstressed reinforcing steel |
| CN108425463B (en) * | 2018-02-09 | 2023-08-01 | 柳州欧维姆机械股份有限公司 | Clamping piece type flat low-retraction anchor and tensioning method for short-bundle prestressed tendons by using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20140705 |
|
| EXPY | Termination of patent right or utility model |