CN101886476A - Prestressed tensioning anchor group single-hole anchor-disassembling device - Google Patents
Prestressed tensioning anchor group single-hole anchor-disassembling device Download PDFInfo
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- CN101886476A CN101886476A CN 201010223138 CN201010223138A CN101886476A CN 101886476 A CN101886476 A CN 101886476A CN 201010223138 CN201010223138 CN 201010223138 CN 201010223138 A CN201010223138 A CN 201010223138A CN 101886476 A CN101886476 A CN 101886476A
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- anchor
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- disassembling device
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Abstract
The invention discloses a prestressed tensioning anchor group single-hole anchor-disassembling device. An anchor-disassembling device body has a cylinder structure, and is axially provided with a clamping piece withdrawal hole and a steel strand penetration hole; the middle wall of the anchor-disassembling device body is provided with a clamping piece falling-out hole; the end face, close to the clamping piece withdrawal hole, of the anchor-disassembling device body is circumferentially uniformly provided with six supporting shoes; and clamping piece grooves are reserved between every two adjacent supporting shoes respectively. When an anchor is disassembled, the clamping piece grooves are opposite to anchored clamping pieces in adjacent anchor holes so as to avoid interference with the clamping pieces in the adjacent anchor holes; the six supporting shoes are in direct contact with an anchor plate, so the anchor-disassembling device body is securely and well stressed in the force application of the anchor-disassembling device to achieve high security; and simultaneously, the damage, which is caused by extrusion between the anchor-disassembling device and the adjacent clamping pieces, to the anchor-disassembling body is avoided, so the service life of the anchor-disassembling device is prolonged and the use cost is reduced.
Description
Technical field
The present invention relates to a kind of employed device when steel bar concrete is carried out carrying out removing anchorage device behind the prestressed stretch-draw, relate in particular to a kind of prestressed tensioning anchor group single-hole anchor-disassembling device.
Background technology
In the existing prestressed stretch-draw process, no matter be single hole anchor or group anchor,, all need adopt single hole limiting plate and anchor restorer stripped thread taking place or mending when opening.
In the prior art, the structure of single hole anchor restorer as shown in Figure 1, anchor restorer body 1a is straight barrel structure, is provided with intermediate plate along axis and withdraws from hole 2a and steel strand perforation 3a, have intermediate plate on the middle wall of anchor restorer body 1a and spill hole 4a, intermediate plate spills hole 4a and withdraws from hole 2a with intermediate plate and communicate.
When using this single hole anchor restorer to carry out the ground tackle dismounting, the structure of single hole anchor restorer under user mode as shown in Figures 2 and 3.Intermediate plate 7a withdraws from main dependence jack from anchor hole 8a power is provided, and the single hole anchor restorer is installed between the outside of intermediate plate 7a and the piston of jack (not drawing among the figure).The steel strand 5a that passes is passed the steel strand perforation 3a of anchor restorer body 1a, pass the piston of jack again and be connected with jack, it is corresponding that intermediate plate 7a and intermediate plate withdraw from hole 2a, straight tube end is pressed in adjacent two anchor hole 8a on the intermediate plate 7a of anchoring, when the startup jack is exerted pressure, intermediate plate 7a withdraws from from anchor hole, after entering intermediate plate and withdrawing from hole 2a, spills hole 4a from intermediate plate and drops out.
In use mainly there is following deficiency in the single hole anchor restorer of said structure: one, the single hole anchor restorer is straight tube, end face is pressed in adjacent two anchor hole 8a on the intermediate plate 7a of anchoring, the single hole anchor restorer can only press on the anchor slab 6a by intermediate plate 7a, and can not directly press on the anchor slab 6a, cause the skew of single hole anchor restorer frock, it is excessive to move back the anchor pulling force, and single hole anchor restorer unbalance stress easily causes security incident; When two, the single hole anchor restorer was by intermediate plate 7a power transmission, the hardness of intermediate plate 7a caused often being lacked by pressure with the end face of adjacent intermediate plate 7a extruding much larger than the hardness of single hole anchor restorer, and well damage causes single hole anchor restorer turnover rate height, and use cost is higher.
Summary of the invention
At the prior art above shortcomings, the invention provides and a kind ofly can avoid contacting when moving back anchor with the intermediate plate of adjacent anchoring, directly press on the anchor slab, and frock is firm, non-migration, stressed even, the life-span is long, the prestressed tensioning anchor group single-hole anchor-disassembling device that use cost is low.
Prestressed tensioning anchor group single-hole anchor-disassembling device provided by the invention, described anchor restorer body is a cylindrical structure, be provided with intermediate plate along axis and withdraw from the perforation of hole and steel strand, have intermediate plate on the middle wall of described anchor restorer body and spill the hole, described intermediate plate spills the hole and withdraws from the hole with intermediate plate and communicate; Described anchor restorer body circumferentially is evenly equipped with six back-up blocks by the end face upper edge that intermediate plate withdraws from the hole, forms clip groove between described adjacent two back-up blocks.
Further, described clip groove is the indent deep-slotted chip breaker, and the center of circle line at the arc surface place of described indent deep-slotted chip breaker is parallel with the axis of anchor restorer body.
Further, the center of circle line at the arc surface place of described indent deep-slotted chip breaker and the axial line distance of anchor restorer body are less than 32.5mm, and the arc radius of described indent deep-slotted chip breaker is greater than 15mm.
Further, the cross-sectional profile profile of described back-up block is made of the circular arc line of three indents.
Further, the interior circular diameter that surrounds of described six back-up blocks is greater than 30mm.
Further, the length of described six back-up blocks on the axial direction of described anchor restorer body is 9～12mm.
Compared with prior art, prestressed tensioning anchor group single-hole anchor-disassembling device of the present invention has following advantage:
1, the present invention circumferentially is evenly equipped with six back-up blocks in the end face upper edge of anchor restorer body, the outside between adjacent two back-up blocks forms clip groove, during installation, make in clip groove and the adjacent anchor hole the intermediate plate of anchoring for corresponding, avoid with adjacent anchor hole in intermediate plate disturb, six back-up blocks can be supported on the anchor slab and to anchor slab fully directly exerts pressure, the anchor restorer body is stressed firm, stressed good, safe.
2, simultaneously, when also having avoided the anchor restorer body stressed and extruding takes place adjacent intermediate plate and cause the anchor restorer body to damage, prolong application life, reduced use cost.
3, described clip groove is the indent deep-slotted chip breaker, and the cross-sectional profile profile of back-up block is made of the circular arc line of three indents, has both ensured the intensity of back-up block self, and is simultaneously easy to process, low cost of manufacture.
Description of drawings
Fig. 1 is the structural representation of single hole anchor restorer of the prior art;
Fig. 2 is the cross section view of single hole anchor restorer of the prior art under user mode;
Fig. 3 is along the cross section view of A-A direction among Fig. 2;
Fig. 4 is the structural representation of prestressed tensioning anchor group single-hole anchor-disassembling device of the present invention;
Fig. 5 is the cross section view of prestressed tensioning anchor group single-hole anchor-disassembling device of the present invention under user mode;
Fig. 6 is along the cross section view of B-B direction among Fig. 5.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in further detail.
Fig. 4 is the structural representation of prestressed tensioning anchor group single-hole anchor-disassembling device of the present invention, as shown in the figure.The anchor restorer body 1 of prestressed tensioning anchor group single-hole anchor-disassembling device is a cylindrical structure, is provided with intermediate plate along axis and withdraws from hole 2 and steel strand perforation 3, has intermediate plate on the middle wall of anchor restorer body 1 and spills hole 4, and intermediate plate spills hole 4 and withdraws from hole 2 with intermediate plate and communicate.Anchor restorer body 1 circumferentially is evenly equipped with six back-up blocks 5 by the end face upper edge that intermediate plate withdraws from hole 2, forms clip groove between adjacent two back-up blocks, and the size of clip groove is decided on the size of anchor hole inner clamp piece and the distance of adjacent anchor hole.During installation, make that the intermediate plate of anchoring is corresponding in clip groove and the adjacent anchor hole, avoid with adjacent anchor hole in intermediate plate disturb.
The interior circular diameter that six back-up blocks surround is greater than 30mm, selects for use greatlyyer than the diameter of existing intermediate plate, and intermediate plate is moved freely in the interior circle that six back-up blocks surround, and helps intermediate plate and withdraws from.Clip groove is an indent deep-slotted chip breaker 6, and the center of circle line at the arc surface place of indent deep-slotted chip breaker 6 is parallel with the axis of anchor restorer body 1, and the axial line distance of center of circle line and anchor restorer body 1 is less than 32.5mm, and the arc radius of indent deep-slotted chip breaker 6 is greater than 15mm.
The length of six back-up blocks 5 on the axial direction of anchor restorer body 1 is 9～12mm, with regard to existing intermediate plate, after intermediate plate clamps the anchor hole of steel strand insertion anchor slab, stays the outer length of anchor slab end face greatly about about 6mm.When utilizing jack to remove intermediate plate, can guarantee that six back-up blocks 5 on the anchor restorer body 1 are stuck on the anchor slab between the intermediate plate in the adjacent in twos anchor hole with all the other ground tackles.If long because of the length of six back-up blocks 5, the distance that the anchor hole inner clamp piece withdraws from is long, and the elongation of steel strand increases when moving back anchor, and the cross section of steel strand diminishes, and formation fracture of wire or be completely cured easily causes security incident.
Steel bar concrete carries out after prestressing force pulls, and carries out intermediate plate or other ground tackle when removing, and at first anchor restorer body 1 is installed between the piston (not drawing among the figure) of anchor slab 8 and jack, as shown in Figure 5 and Figure 6.Steel strand 7 are passed steel strand perforation 3 on the anchor restorer body 1, pass the piston of jack and be connected with jack.It is corresponding that intermediate plate in intermediate plate 9 and the anchor restorer body 1 withdraws from hole 2, and six back-up blocks 5 are stuck on the anchor slab 8 between the intermediate plate 9 in the adjacent in twos anchor hole 10.When the startup jack carried out intermediate plate 9 and the dismounting of other ground tackle, the piston rod of jack was pressed in the other end of anchor restorer body 1, and anchor restorer body 1 directly passes to power anchor slab 8 by six back-up blocks 5 on it.Steel strand 7 tensions in the anchor hole 10 drive intermediate plate 9 and withdraw from anchor hole 10, and intermediate plate 9 enters intermediate plate and withdraws from the hole 2, and spill the hole 4 from intermediate plate and to spill, and reach the purpose of removing intermediate plate 9.
Because six back-up blocks 5 have been avoided the intermediate plate position in the adjacent anchor hole 10 fully, form six positions of annular and contact with anchor slab 8, both stressed even, do not disturb other anchor hole to realize normal single hole stretch-draw again.Constant all the time because of the center to center distance of each anchor hole and adjacent anchor hole, so being applicable to any one anchor hole, removes this prestressed tensioning anchor group single-hole anchor-disassembling device.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. prestressed tensioning anchor group single-hole anchor-disassembling device, described anchor restorer body (1) is a cylindrical structure, be provided with intermediate plate along axis and withdraw from hole (2) and steel strand perforation (3), have intermediate plate on the middle wall of described anchor restorer body (1) and spill hole (4), described intermediate plate spills hole (4) and withdraws from hole (2) with intermediate plate and communicate; It is characterized in that: described anchor restorer body (1) circumferentially is evenly equipped with six back-up blocks (5) by the end face upper edge that intermediate plate withdraws from hole (2), forms clip groove between described adjacent two back-up blocks (5).
2. prestressed tensioning anchor group single-hole anchor-disassembling device according to claim 1 is characterized in that: described clip groove is indent deep-slotted chip breaker (6), and the center of circle line at the arc surface place of described indent deep-slotted chip breaker (6) is parallel with the axis of anchor restorer body (1).
3. prestressed tensioning anchor group single-hole anchor-disassembling device according to claim 2, it is characterized in that: the axial line distance of the center of circle line at the arc surface place of described indent deep-slotted chip breaker (6) and anchor restorer body (1) is less than 32.5mm, and the arc radius of described indent deep-slotted chip breaker (6) is greater than 15mm.
4. according to claim 1,2 or 3 described prestressed tensioning anchor group single-hole anchor-disassembling devices, it is characterized in that: the cross-sectional profile profile of described back-up block (5) is made of the circular arc line of three indents.
5. prestressed tensioning anchor group single-hole anchor-disassembling device according to claim 4 is characterized in that: the interior circular diameter that described six back-up blocks (5) surround is greater than 30mm.
6. prestressed tensioning anchor group single-hole anchor-disassembling device according to claim 5 is characterized in that: the length of described six back-up blocks (5) on the axial direction of described anchor restorer body (1) is 9～12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010223138XA CN101886476B (en) | 2010-07-09 | 2010-07-09 | Prestressed tensioning anchor group single-hole anchor-disassembling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010223138XA CN101886476B (en) | 2010-07-09 | 2010-07-09 | Prestressed tensioning anchor group single-hole anchor-disassembling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101886476A true CN101886476A (en) | 2010-11-17 |
| CN101886476B CN101886476B (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010223138XA Expired - Fee Related CN101886476B (en) | 2010-07-09 | 2010-07-09 | Prestressed tensioning anchor group single-hole anchor-disassembling device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539042A (en) * | 2012-07-16 | 2014-01-29 | 甘肃第一建设集团有限责任公司 | Spiral anchor-withdrawing device and using method thereof |
| CN104631835A (en) * | 2013-11-15 | 2015-05-20 | 五冶集团上海有限公司 | Prestressed beam and slab stretching-drawing group-bundle steel strand anchor receding device and application thereof |
| CN105445181A (en) * | 2015-11-25 | 2016-03-30 | 安徽金星预应力工程技术有限公司 | Method for measuring friction coefficients of pre-stressed ducts of water-drop-shaped cable saddle of stay cable |
| CN109339836A (en) * | 2018-11-20 | 2019-02-15 | 中煤新集能源股份有限公司 | The quick anchor restorer of anchor cable |
| CN109487688A (en) * | 2018-12-23 | 2019-03-19 | 东莞市建设工程检测中心 | Anchor head tripper and unlocking method |
| CN113187245A (en) * | 2021-04-29 | 2021-07-30 | 中建桥梁有限公司 | Clamping piece shifting device for prestress tension releasing construction and shifting method thereof |
| CN113210553A (en) * | 2021-06-02 | 2021-08-06 | 中冶建工集团有限公司 | Prestressed porous anchorage machining equipment and technology |
Citations (6)
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|---|---|---|---|---|
| DE2707910A1 (en) * | 1977-02-24 | 1978-08-31 | Losinger Ag | Cable bundle tensioning system - has clamping wedges and slotted socket shaped tongs axially aligned with tension members |
| CN2589589Y (en) * | 2002-04-29 | 2003-12-03 | 冶金工业部建筑研究总院 | Multi-head self-locking self-opening tool anchor |
| US20050097843A1 (en) * | 2003-11-07 | 2005-05-12 | Giesel Ronald D. | Releasable coupling device for use with reinforcing tendons and method of using the same |
| CN201025049Y (en) * | 2007-04-20 | 2008-02-20 | 太原理工大学 | An anchor return locker device for coal mine re-exploration laneway |
| CN101343880A (en) * | 2007-07-10 | 2009-01-14 | 中铁西北科学研究院有限公司深圳南方分院 | Apparatus and method for existing anchorage engineering quality detection |
| CN201714101U (en) * | 2010-07-23 | 2011-01-19 | 中冶建工有限公司 | Group anchor single-hole anchor withdrawing mechanism |
-
2010
- 2010-07-09 CN CN201010223138XA patent/CN101886476B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2707910A1 (en) * | 1977-02-24 | 1978-08-31 | Losinger Ag | Cable bundle tensioning system - has clamping wedges and slotted socket shaped tongs axially aligned with tension members |
| CN2589589Y (en) * | 2002-04-29 | 2003-12-03 | 冶金工业部建筑研究总院 | Multi-head self-locking self-opening tool anchor |
| US20050097843A1 (en) * | 2003-11-07 | 2005-05-12 | Giesel Ronald D. | Releasable coupling device for use with reinforcing tendons and method of using the same |
| CN201025049Y (en) * | 2007-04-20 | 2008-02-20 | 太原理工大学 | An anchor return locker device for coal mine re-exploration laneway |
| CN101343880A (en) * | 2007-07-10 | 2009-01-14 | 中铁西北科学研究院有限公司深圳南方分院 | Apparatus and method for existing anchorage engineering quality detection |
| CN201714101U (en) * | 2010-07-23 | 2011-01-19 | 中冶建工有限公司 | Group anchor single-hole anchor withdrawing mechanism |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539042A (en) * | 2012-07-16 | 2014-01-29 | 甘肃第一建设集团有限责任公司 | Spiral anchor-withdrawing device and using method thereof |
| CN104631835A (en) * | 2013-11-15 | 2015-05-20 | 五冶集团上海有限公司 | Prestressed beam and slab stretching-drawing group-bundle steel strand anchor receding device and application thereof |
| CN105445181A (en) * | 2015-11-25 | 2016-03-30 | 安徽金星预应力工程技术有限公司 | Method for measuring friction coefficients of pre-stressed ducts of water-drop-shaped cable saddle of stay cable |
| CN109339836A (en) * | 2018-11-20 | 2019-02-15 | 中煤新集能源股份有限公司 | The quick anchor restorer of anchor cable |
| CN109487688A (en) * | 2018-12-23 | 2019-03-19 | 东莞市建设工程检测中心 | Anchor head tripper and unlocking method |
| CN113187245A (en) * | 2021-04-29 | 2021-07-30 | 中建桥梁有限公司 | Clamping piece shifting device for prestress tension releasing construction and shifting method thereof |
| CN113210553A (en) * | 2021-06-02 | 2021-08-06 | 中冶建工集团有限公司 | Prestressed porous anchorage machining equipment and technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101886476B (en) | 2011-11-09 |
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