CN202047600U - Lengthened sleeve for tool anchor - Google Patents
Lengthened sleeve for tool anchor Download PDFInfo
- Publication number
- CN202047600U CN202047600U CN2011200286706U CN201120028670U CN202047600U CN 202047600 U CN202047600 U CN 202047600U CN 2011200286706 U CN2011200286706 U CN 2011200286706U CN 201120028670 U CN201120028670 U CN 201120028670U CN 202047600 U CN202047600 U CN 202047600U
- Authority
- CN
- China
- Prior art keywords
- jack
- anchor
- tool anchor
- cylindrical shell
- steel strand
- 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 discloses a lengthened sleeve for a tool anchor, which comprises a cylinder; an annular step is arranged on the outer wall at one end (extending into an inner cavity of a jack) of the cylinder, and a threaded hole is formed on the annular step; and the other end of the cylinder extends outside of the jack and is matched with a limit plate. After one-time tensioning is finished, the clamping piece of the tool anchor is only required to be taken down, and a tool anchor plate is not required to be newly disassembled and installed before the next tensioning, so that the construction efficiency is improved, and the thread damage in the installation of an ordinary inner clamping type jack and a built-in jack of the tool anchor is avoided.
Description
Technical field
The utility model relates to the prestressing force technical field of jacks, specifically belongs to moveable anchor and overlaps with lengthening.
Background technology
Prestressing technique is the key technology during high ferro is built, promptly the underrelaxation high strength steel strand (intensity reaches 2000MPa) of some is through in the preformed hole of concrete component inside, on the steel wire bundle at concrete component two ends, install strand tapered anchorage then, by tensioner stretch-draw steel strand such as hydraulic jack, apply prestressing force for the high ferro concrete component, improve the bearing strength of member, make member have good cracking resistance and earthquake resistance and prevention performance simultaneously.
In the concrete beam body reserving hole channel, put on steel strand (the every end length in reserve of steel strand is 0.8m), successively installation work anchor slab, work clip sheet, limiting plate, jack main body, instrument anchor slab and instrument intermediate plate.
After striking the clamping tool intermediate plate, start oil pump to the jack fuel feeding, piston moves, and by moveable anchor (instrument anchor slab and instrument intermediate plate) extended steel twisted wire, exerts pressure for the beam body.
After pulling force reaches design load, unloading, the steel strand retraction drives the work clip sheet follow-up, utilizes intermediate plate from anchor steel strand to be anchored in the work anchor slab.There is following problem in the vertically-displacable jack:
1, the every end length in reserve of steel strand is 0.8m, treats that intermediate plate is total to the 1.6m steel strand with two ends and cuts away waste material behind anchor.
2, the vertically-displacable jack in use will be pulled down moveable anchor after finishing one group of steel strand tension, moveable anchor will be reinstalled before next group stretch-draw, because the volume mass of moveable anchor is bigger, causes moveable anchor installation and dismounting difficulty big.
3, when the stripped thread situation appears in intermediate plate, moveable anchor is locked in the rear end of jack, deals with difficulty.Inner blocking type jack problems analysis:
1, the piston elongation end of jack is measured difficulty of steel strand stretch value by beam body one end in the use of inner blocking type jack in the market in the construction.
2, because the inner blocking type jack has increased part, assembling trouble, and maintenance difficult.
When 3, the stripped thread situation appears in work clip sheet, may locked jack main body, difficult treatment.
4, require the hole arragement direction of instrument anchor slab and work anchor slab unified in the construction, the inner blocking type jack is difficult to control.
The utility model content
The purpose of this utility model provides moveable anchor and overlaps with lengthening, the lengthening cover is connected the rear and front end of jack by hex bolts, after finishing single tension, only need the instrument intermediate plate is taken off, before stretch-draw next time, need not dismantle again, the erecting tools anchor slab, improve efficiency of construction, avoided screw thread damage in common inner blocking type jack, the built-in jack installation process of moveable anchor.
The technical solution adopted in the utility model is as follows:
Moveable anchor includes cylindrical shell with the lengthening cover, and cylindrical shell one end outer wall is provided with ring-shaped step, and extend in the jack inner chamber, and ring-shaped step is provided with screwed hole; The other end of cylindrical shell stretches out the jack outside, and matches with limiting plate.
The end that described cylindrical shell end extend into jack inner chamber and connecting cylinder, work anchor slab is roof pressure mutually.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1, the application of this jack has reduced the distance between work ground tackle and the instrument ground tackle, makes the length in reserve of the every end of steel strand reduce to 0.35m by 0.8m, and stretch-draw finishes the every bundle steel strand in back can save 0.9m.
2, nut and lengthening cover are connected the rear and front end of jack by hex bolts, after finishing single tension, only need the instrument intermediate plate is taken off, and need not dismantle again before stretch-draw next time, the erecting tools anchor slab, have improved efficiency of construction.Avoided screw thread damage in common inner blocking type jack, the built-in jack installation process of moveable anchor.
3, between connecting cylinder and the nut by being threaded, can be in the construction according to the position, hole of the position adjustments moveable anchor of work anchor plate hole, steel strand comes convenient and swift.
4, fall an oblique angle at instrument anchor slab straight hole end, it is convenient that steel strand penetrate the instrument anchor slab.
5, intermediate plate stripped thread problem occurs, can the jack main body be unloaded with nut, connecting cylinder from the dismounting of jack main body down again, jack is by locked situation when having avoided the vertically-displacable jack intermediate plate stripped thread situation to occur.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Referring to accompanying drawing, moveable anchor includes cylindrical shell 1 with the lengthening cover, and cylindrical shell 1 one end outer walls are provided with ring-shaped step 2, and extend in the jack inner chamber, and ring-shaped step is provided with screwed hole 3; The other end of cylindrical shell 1 stretches out the jack outside, and matches with limiting plate, and the end that the cylindrical shell end extend into jack inner chamber and connecting cylinder, the anchor slab of working is roof pressure mutually.
Concrete work progress of the present utility model is:
1, moveable anchor, nut are connected on the internal and external screw thread of connecting cylinder, and in the punching tube with its jack of packing into together, with soket head cap screw with this overall fixed on the main body of jack.
2, the cover that will extend is fixed on the front end of jack.
3, after installation work ground tackle, limiting plate, mobile jack main body is through steel strand in the moveable anchor of jack inside.
4, strike the clamping tool intermediate plate, start oil pump to the jack fuel feeding, piston moves, and by moveable anchor (instrument anchor slab and instrument intermediate plate) extended steel twisted wire, exerts pressure for the beam body.
Claims (2)
1. moveable anchor includes cylindrical shell with the lengthening cover, and it is characterized in that: cylindrical shell one end outer wall is provided with ring-shaped step, and extend in the jack inner chamber, and ring-shaped step is provided with screwed hole; The other end of cylindrical shell stretches out the jack outside, and matches with limiting plate.
2. moveable anchor according to claim 1 is characterized in that with the lengthening cover: the end that described cylindrical shell end extend into jack inner chamber and connecting cylinder, the anchor slab of working is roof pressure mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200286706U CN202047600U (en) | 2011-01-28 | 2011-01-28 | Lengthened sleeve for tool anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200286706U CN202047600U (en) | 2011-01-28 | 2011-01-28 | Lengthened sleeve for tool anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047600U true CN202047600U (en) | 2011-11-23 |
Family
ID=44987913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200286706U Expired - Fee Related CN202047600U (en) | 2011-01-28 | 2011-01-28 | Lengthened sleeve for tool anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202047600U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625728A (en) * | 2014-11-05 | 2016-06-01 | 天津银龙预应力材料股份有限公司 | Rapid mounting tool for anchor plate |
| CN105986548A (en) * | 2015-02-10 | 2016-10-05 | 杭州富锚机械有限公司 | Tensioning device and method of low-retraction anchor |
| CN110512519A (en) * | 2019-07-16 | 2019-11-29 | 武汉希萌科技有限公司 | A kind of tool anchor device for facilitating steel strand wires to penetrate |
-
2011
- 2011-01-28 CN CN2011200286706U patent/CN202047600U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625728A (en) * | 2014-11-05 | 2016-06-01 | 天津银龙预应力材料股份有限公司 | Rapid mounting tool for anchor plate |
| CN105986548A (en) * | 2015-02-10 | 2016-10-05 | 杭州富锚机械有限公司 | Tensioning device and method of low-retraction anchor |
| CN105986548B (en) * | 2015-02-10 | 2018-02-13 | 杭州富锚机械有限公司 | A kind of low retraction anchorage tensioning equipment and method for stretching |
| CN110512519A (en) * | 2019-07-16 | 2019-11-29 | 武汉希萌科技有限公司 | A kind of tool anchor device for facilitating steel strand wires to penetrate |
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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: 20111123 Termination date: 20160128 |
|
| EXPY | Termination of patent right or utility model |