CN2224194Y - Group stretch-draw jack - Google Patents
Group stretch-draw jack Download PDFInfo
- Publication number
- CN2224194Y CN2224194Y CN 95214304 CN95214304U CN2224194Y CN 2224194 Y CN2224194 Y CN 2224194Y CN 95214304 CN95214304 CN 95214304 CN 95214304 U CN95214304 U CN 95214304U CN 2224194 Y CN2224194 Y CN 2224194Y
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- jack
- stretch
- draw
- single pole
- jacks
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Abstract
The utility model relates to a group tensioning jack which belongs to the technical field of work machines. The utility model is composed of one, two or more single cylinder and single pole jacks, and is provided with a plurality of pipes, a pallet, a supporting plate, a pressing plate, supporting feet, a hydraulic transmission system, tool anchor components, etc. One, two or more steel strands can be stretched, when two or more steel strands are stretched, the equalization of tensile force of every steel strand can be ensured. The jack can be widely used for technology implementation of prestressing anchorage in engineerings such as buildings, bridges, side slopes, etc. The accompanying diagram is the axial section schematic diagram of the jack.
Description
The utility model relates to and a kind of the employed single rope on the load, club of directly acting on of operations such as lifting, traction, pushing tow is obtained the work tool that stretching force or many ropes, clubs obtain to equate stretching force, belongs to the Work machine technical field.It can be widely used in engineerings such as building, hydro-structure, Prestressed Concrete Bridges, Excitations for Long Span Suspension, side slope, the dam foundation and carry out the technology implementation that prestressed anchor reinforcement is handled, be not only applicable to stretch-draw, be highly suitable for stretch-draw yet many steel strand to single steel strand.
At present, the lot of domestic and international engineering item all adopts the prestressed anchor reinforcement engineering office to bury.Existing prestressed anchorage technology to the stretch-draw of steel wire bundle from asynchronous stretch-draw of power such as whole synchronous tension develop into.The result of synchronous tension is variant by the tension stress of each the root steel strand in the steel wire bundle of stretch-draw, can guarantee to be equated by the tension stress of each root steel strand in the steel wire bundle of stretch-draw etc. the result of the asynchronous stretch-draw of power.
Chinese patent 93246126.3,93246127.1 described " the asynchronous jack of power such as single cylinder bull ", " device is drawn on the asynchronous top of power such as many bars of single cylinder ", can be to the asynchronous stretch-draw of power such as each root steel strand enforcement in the steel wire bundle, but the axial force that hydraulic medium gave that end plates bear is also very big, has strengthened difficulty to processing and fabricating.Though Chinese patent 94247288.8 can reduce the axial force that end plates bear, weight increases, and has also increased manufacturing cost.When the said equipment changed at stretch-draw steel strand radical, adaptability to changes was not strong.
The purpose of this utility model is the very heavy item of a kind of groups stretch-draw that provides for the shortcoming that overcomes above-mentioned prior art.This jack is easy to processing, and cost of manufacture is low, and is in light weight, easy to operate, when being changed by the steel wire radical of stretch-draw, and strong adaptability.
The utility model can be realized by following measure: single cylinder single pole jack, constitute by cylinder body, top pull bar, end face baffle ring, poted assemblies etc., be equipped with work anchor assembly, power hydraulic system, supporting plate, number siphunculus, feet, backhaul oil cylinder etc., can be to the stretch-draw of the single steel strand application of force.With two or more single cylinder single pole jacks together according to certain mode permutation and combination; be equipped with work anchor assembly, power hydraulic system, supporting plate, number siphunculus, stay bearing plate, feet, protecting sleeve, pressing plate, bolt, backhaul oil cylinder etc., can carry out stretch-draw two or many steel strand.
Working hydraulic pressure medium from power hydraulic system comes out flows in the pressure chamber of each single cylinder single pole jack through the number siphunculus.The variable section position that exterior contour is the top pull bar in each single cylinder single pole jack of stepped shaft shape is in the pressure chamber of cylinder body, the difference of the area of a circle that cylindrical surrounded of top pull bar enlarged diameter section and the area of a circle that cylindrical surrounded of reduced diameter section is an effective cross sectional area, according to the hydraulic principle, as long as effective cross sectional area equates that then hydraulic medium also equates the axial thrust of each top pull bar.
Groove is arranged in the supporting plate, in several siphunculus are housed, when with steel strand of a single cylinder single pole jack tension, the number siphunculus have only fuel-displaced chewing, and this fuel-displaced axially extending bore of chewing on the end face baffle ring inserts in the pressure chamber of jack.With screw supporting plate and jack are connect firmly.When with two of two or more single cylinder single pole jack tensions or many steel strand, it is corresponding with the quantity of jack that severals siphunculus of installing in the groove of supporting plate fuel-displaced chews number, and count in the fuel-displaced pressure chamber of chewing through a single cylinder single pole jack of the feeding of the oil hole on the end face baffle ring of siphunculus.With screw supporting plate and several jacks are linked together.Pressing plate connects by bolt and supporting plate, and several jacks are fastened in the centre, and the concrete structure of top pull bar can be designed to integrative-structure, and promptly its enlarged diameter section and reduced diameter section are one-piece parts; Also can be designed to two body structures, promptly major diameter and reduced diameter section are two parts in processing and making process, and then by screw thread and sealing member or by welding large and small diameter segment are connected into a complete top pull bar; Can also be designed to multiple hull construction, promptly constitute a complete top pull bar through welding by a mini diameter tube, a thick pipe and two parts such as annular slab.
The advantage of this kind of groups stretch-draw jack is as follows:
1, use a single cylinder single pole jack to carry out stretch-draw to steel strand, using two or more single cylinder single pole jacks to combine can be to the asynchronous stretch-draw of power such as two or many steel strand carry out, strong adaptability.
2, be easy to processing, cost of manufacture is low.
3, in light weight, easy to operate.
4, many steel strand are carried out stretch-draw, distribution of stress is even, and construction quality is good.
Accompanying drawing drawing of the present utility model is described as follows:
The axial section of the single cylinder single pole jack when Fig. 1 is load line of in-group stretch-draw jack tension.
Fig. 2 is the axial section that four single cylinder single pole jacks are combined 4 colony's stretch-draw jacks that constitute.The section of this section-drawing is to cut open along the axis of two adjacent single cylinder single pole jacks, not through the central axis of 4 colony's stretch-draw jacks.
Fig. 3 is the A-A transverse cross-sectional view of 4 colony's stretch-draw jacks shown in Figure 2.
Fig. 4 is the top pull bar axial section of multiple hull construction, and it is to constitute a complete top pull bar by a mini diameter tube, a thick pipe and two annular slabs through welding.
Referring to the structure of the colony's stretch-draw jack shown in accompanying drawing 1,2 and 3, wherein:
1, cylinder body 2, top pull bar 3, end face baffle ring 4, poted assemblies 5, number siphunculus 6, supporting plate 7, pressing plate 8, protecting sleeve 9, bolt 10, stay bearing plate 11, moveable anchor assembly 12, power hydraulic system 13, feet 14, limit switch 15, backhaul oil cylinder 16, steel strand 17, work anchor assembly
The utility model is with identical by structure, and 4 single cylinder single pole jacks that size equates are combined and constituted 4 colony's stretch-draw jacks is embodiment, promptly shown in Fig. 2,3.
Referring to 4 colony's stretch-draw jack structures shown in Fig. 2 and 3:
Supporting plate (6) and pressing plate (7) are installed in the two-end part of protecting sleeve (8); 4 single cylinder single pole jacks are installed in the protecting sleeve (8); with bolt (9) 4 single cylinder single pole jacks, protecting sleeve (8), supporting plate (6), pressing plate (7) firmly are bound up, and directionality is arranged are installed on the stay bearing plate (10).The structure of four single cylinder single pole jacks is identical, and by cylinder body (1), top pull bar (2), end face baffle ring (3), poted assemblies formations such as (4), the effective cross sectional area of top pull bar equates.All there is an axial concentric pylone in centre at cylinder body (1), top pull bar (2), end face baffle ring (3).The non-central position of end face baffle ring also has an axially extending bore, and the working hydraulic pressure medium in the jack pressure chamber flows into from this axially extending bore.The center axially extending bore of top pull bar (2) can pass a load line, i.e. steel strand (16), there is groove a side of supporting plate (6), several siphunculus (5) are arranged in the groove, single cylinder single pole jack and supporting plate (6) be connected with directionality, in the axially extending bore of using with the injection hydraulic medium on the end face baffle ring (3) of guaranteeing the fuel-displaced end of chewing four single cylinder single poles of accurate insertion jack of four of number siphunculus (5).A moveable anchor assembly (11) is laid in end at the enlarged diameter section of each top pull bar (2), each moveable anchor assembly (11) can be bitten from top pull bar axis through-hole and pass next steel strand (16) [i.e. load line], during to the stretch-draw of the steel strand application of force, there are power hydraulic system (12), limit switch (14), feet parts such as (13) to cooperate.Power hydraulic system (12) is by oiling through hole oil-filled pressurization in the pressure chamber of 4 single cylinder single pole jacks of number siphunculus (5) and 4 single cylinder single pole jack end face baffle rings (3), because the mutual action of cylinder body (1), top pull bar (2) end face baffle ring (3) poted assemblies (4), hydraulic medium can not be to outer seepage in the pressure chamber, then operation pressure rises, hydraulic medium produces axial thrust to top pull bar (2), it is moved, jack-up moveable anchor assembly (11) to the larger diameter end direction.At this moment, as long as moveable anchor assembly (11) bitten steel strand (16), then the tractive end of steel strand (16) just with moveable anchor assembly (11) by top pull bar (2) jack-up.The tractive end of the steel strand (16) that the more loose pulling force of initial condition is less is at first moved by jack-up with moveable anchor assembly (11), is not moved by jack-up together and initial condition strains at the tractive end and the moveable anchor assembly (11) of the bigger steel strand of power (16).Increase along with the hydraulic medium operation pressure, hydraulic medium increases the axial thrust of top pull bar (2), the tractive end of the steel strand that initial tensile force is bigger (16) is with moveable anchor assembly (11), one by one by top pull bar (2) jack-up, until with the tractive end of 4 steel strand (16) along with moveable anchor assembly (11) is moved by top pull bar (2) jack-up together.At this moment, the stretching force of 4 steel strand equates.If stroke of stretch-draw, the stretching force of steel strand (16) fails to reach specified index, then can carry out the 3rd time the 2nd time under the cooperation of backhaul oil cylinder (15), work anchor assembly (17) ... stretch-draw.Till the true stretching force with steel strand (16) reaches nominal value.
Claims (6)
1, one kind of groups stretch-draw jack, by one, two or more single cylinder single pole jacks are formed, each single cylinder single pole jack is again by cylinder body, the top pull bar, the end face baffle ring, formations such as poted assemblies, and are furnished with several siphunculus, supporting plate, stay bearing plate, pressing plate, bolt etc., and power hydraulic system, the moveable anchor assembly, feet, limit switch, backhaul oil cylinder etc., it is characterized in that: it is to be made of one or several single cylinder single pole jacks, wherein constitute the cylinder body and the end face baffle ring of each single cylinder single pole jack, in their centre, an axially extending bore is all arranged, and the axis of the axially extending bore in the centre of the axis of this through hole and top pull bar coincides.
2, colony as claimed in claim 1 stretch-draw jack is characterized in that: the working hydraulic pressure medium in each single cylinder single pole jack is that the axially extending bore from the end face baffle ring of each single cylinder single pole jack injects, rather than perforate is injected from the cylinder body.
3, as claim 1 and 2 described colony stretch-draw jacks, it is characterized in that: each single cylinder single pole jack can only load line of jack-up, i.e. steel strand.
4, as claim 1,2 and 3 described colony stretch-draw jacks, it is characterized in that: the fuel-displaced number of chewing of number siphunculus is identical with the number of the single cylinder single pole jack of combination.
5, as claim 1,2,3 and 4 described colony stretch-draw jacks, it is characterized in that: supporting plate and single cylinder single pole jack be connected with directionality.
6, as claim 1,2 and 3 described colony stretch-draw jacks, it is characterized in that: the top pull bar is to constitute a complete top pull bar by a mini diameter tube, a thick pipe and two parts such as annulus through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95214304 CN2224194Y (en) | 1995-06-27 | 1995-06-27 | Group stretch-draw jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95214304 CN2224194Y (en) | 1995-06-27 | 1995-06-27 | Group stretch-draw jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2224194Y true CN2224194Y (en) | 1996-04-10 |
Family
ID=33863970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95214304 Expired - Fee Related CN2224194Y (en) | 1995-06-27 | 1995-06-27 | Group stretch-draw jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2224194Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422676A (en) * | 2013-07-30 | 2013-12-04 | 中煤科工集团西安研究院 | Device for evenly tensioning anchor cable |
| CN103539034A (en) * | 2013-10-08 | 2014-01-29 | 中国核工业华兴建设有限公司 | Prestress tension jack clamping device |
| CN105152069A (en) * | 2015-09-25 | 2015-12-16 | 柳州欧维姆机械股份有限公司 | Lifting jack with lifting pre-tightening device and method for lifting jack for pre-tightening lifting steel strands |
| CN106276684A (en) * | 2016-10-18 | 2017-01-04 | 柳州黔桥工程材料有限公司 | The single pre-tightening apparatus of multipoint mode steel strand wires |
| CN106315450A (en) * | 2016-10-18 | 2017-01-11 | 柳州黔桥工程材料有限公司 | Integral automatic synchronous pre-tightening device for steel strand group anchor inhaul cables |
| CN106429943A (en) * | 2016-10-18 | 2017-02-22 | 柳州黔桥工程材料有限公司 | Integral type multi-piston single pre-tightening jack |
| CN110374149A (en) * | 2019-08-26 | 2019-10-25 | 关喜才 | A kind of anti-floating pile vertical load detection method and disk knot detection device |
| CN110374151A (en) * | 2019-08-26 | 2019-10-25 | 关喜才 | A kind of full-automatic vertical load detection method and device of anti-floating pile |
| CN110374150A (en) * | 2019-08-26 | 2019-10-25 | 关喜才 | A kind of anti-floating pile vertical load experiment detection method and device equipped with pre-tightening apparatus |
| CN110374148A (en) * | 2019-08-26 | 2019-10-25 | 关喜才 | A kind of anti-floating engineering pile vertical load experiment detection method and device |
| CN110424478A (en) * | 2019-08-26 | 2019-11-08 | 关喜才 | A kind of anti-floating pile variable diameters vertical load detection method and device |
| CN111188282A (en) * | 2020-03-01 | 2020-05-22 | 河南交院工程技术有限公司 | Steel strand prestress tensioning equipment |
-
1995
- 1995-06-27 CN CN 95214304 patent/CN2224194Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422676A (en) * | 2013-07-30 | 2013-12-04 | 中煤科工集团西安研究院 | Device for evenly tensioning anchor cable |
| CN103422676B (en) * | 2013-07-30 | 2016-01-20 | 中煤科工集团西安研究院有限公司 | The even tensioning equipment of anchor cable |
| CN103539034A (en) * | 2013-10-08 | 2014-01-29 | 中国核工业华兴建设有限公司 | Prestress tension jack clamping device |
| CN105152069A (en) * | 2015-09-25 | 2015-12-16 | 柳州欧维姆机械股份有限公司 | Lifting jack with lifting pre-tightening device and method for lifting jack for pre-tightening lifting steel strands |
| CN106429943A (en) * | 2016-10-18 | 2017-02-22 | 柳州黔桥工程材料有限公司 | Integral type multi-piston single pre-tightening jack |
| CN106315450A (en) * | 2016-10-18 | 2017-01-11 | 柳州黔桥工程材料有限公司 | Integral automatic synchronous pre-tightening device for steel strand group anchor inhaul cables |
| CN106276684A (en) * | 2016-10-18 | 2017-01-04 | 柳州黔桥工程材料有限公司 | The single pre-tightening apparatus of multipoint mode steel strand wires |
| CN110374149A (en) * | 2019-08-26 | 2019-10-25 | 关喜才 | A kind of anti-floating pile vertical load detection method and disk knot detection device |
| CN110374151A (en) * | 2019-08-26 | 2019-10-25 | 关喜才 | A kind of full-automatic vertical load detection method and device of anti-floating pile |
| CN110374150A (en) * | 2019-08-26 | 2019-10-25 | 关喜才 | A kind of anti-floating pile vertical load experiment detection method and device equipped with pre-tightening apparatus |
| CN110374148A (en) * | 2019-08-26 | 2019-10-25 | 关喜才 | A kind of anti-floating engineering pile vertical load experiment detection method and device |
| CN110424478A (en) * | 2019-08-26 | 2019-11-08 | 关喜才 | A kind of anti-floating pile variable diameters vertical load detection method and device |
| CN111188282A (en) * | 2020-03-01 | 2020-05-22 | 河南交院工程技术有限公司 | Steel strand prestress tensioning equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |