CN203095516U - Steel strand tensioning jack - Google Patents
Steel strand tensioning jack Download PDFInfo
- Publication number
- CN203095516U CN203095516U CN 201320019604 CN201320019604U CN203095516U CN 203095516 U CN203095516 U CN 203095516U CN 201320019604 CN201320019604 CN 201320019604 CN 201320019604 U CN201320019604 U CN 201320019604U CN 203095516 U CN203095516 U CN 203095516U
- Authority
- CN
- China
- Prior art keywords
- steel strand
- oil cylinder
- tensioning jack
- strand tensioning
- steel
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 35
- 239000010959 steel Substances 0.000 title claims abstract description 35
- 238000004080 punching Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract 7
- 238000010276 construction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A steel strand tensioning jack comprises an oil cylinder, a sealing ring located at one end of the oil cylinder, a piston located in the oil cylinder, a center penetrating sleeve installed in the piston, a sealing plate and a pressing ring, wherein the sealing plate and the pressing ring are sequentially installed and located at the other end of the oil cylinder. The center penetrating sleeve is of a cylindrical shape. Small holes penetrating through a cylindrical body and used for threading steel strands are formed along the circumference of the cylindrical body of a center axis. The center penetrating sleeve penetrating through the cylindrical body and the small holes used for threading the steel strands are of a circular shape, an oval shapes or an n-sided shape and evenly distributed, wherein n is any integer of 4, 6, 8...16. Due to the fact that the center penetrating sleeve of the steel strand tensioning jack is of the cylindrical shape, compared with an existing steel strand tensioning jack with a cylindrical center penetrating sleeve, the steel strand tensioning jack is better in stress receiving condition, and when the same steel strands are tensioned and pulled, the appearance size of the steel strand tensioning jack is reduced. The steel strand tensioning jack is especially suitable for being used in a place where a used space is limited.
Description
Technical field
The utility model belongs to a kind of pre-stress construction machinery, particularly a kind of steel strand tension jack.
Background technology
At present, in some prestress wire stretching constructions, need a kind of structural volume little, can bear higher oil pressure stretch-draw jack, and the punching cover of existing steel strand tension jack is drum (referring to Fig. 3), and the punching cover can be out of shape when bearing high pressure, and the punching jacket wall is thin to cause the meeting distortion excessive, influence sealing effectiveness, therefore in order to reduce distortion, usually can strengthen the punching sleeve wall thickness, jack total volume will become big like this; Can not satisfy the specific (special) requirements of above-mentioned construction.Therefore a kind of bearing under the situation of identical oil pressure of urgent hope, littler than existing jack volume, be adapted at the large-tonnage that use in the limited place of usage space, major diameter, the steel strand tension jack of superelevation oil pressure.
Summary of the invention
The purpose of this utility model is to provide a kind of volume little, is adapted at the large-tonnage that use in the limited place of usage space, major diameter, " a kind of steel strand tension jack " of superelevation oil pressure.
The technical scheme that addresses the above problem is: a kind of steel strand tension jack
,Comprise oil cylinder, be positioned at oil cylinder one end seal ring, be positioned at in-oil cylinder piston, be installed in piston the punching cover, be positioned at closing plate and hold-down ring that the oil cylinder other end is installed successively, it is characterized in that: described punching cover is the cylinder bodily form, along being distributed with the aperture that connects cylinder, is used for steel strand on the circumference of cylinder axis.
Its further technical scheme is: the aperture that connect tubular punching cover, is used for steel strand is circular, ellipse or n limit shape, and each aperture is evenly arranged, n is 4,6,8 ... arbitrary integer between 16.
What the punching cover of the steel strand tension jack of the utility model adopted is the cylinder body structure, compare with the cylindrical shape punching nested structure of existing steel strand tension jack, be equivalent to increase the reinforcement supporting structure in the centre, stressing conditions is far good than cylindrical structure, so can reduce the oad of punching cover, when the same steel wire bundle of stretch-draw, can reduce the jack oad, especially be fit to the limited place of usage space and use.
Be described further below in conjunction with the technical characterictic of drawings and Examples a kind of steel strand tension jack of the utility model.
Description of drawings
Fig. 1: the structural representation of a kind of steel strand tension jack of the utility model;
Fig. 2: the structural representation of punching cover;
Fig. 3: the structural representation of existing a kind of steel strand tension jack.
Among the figure:
The 1-hold-down ring, the 2-closing plate, 3-punching cover, 31-is used for the aperture of steel strand, 4-piston, 5-oil cylinder, 6-seal ring, 7-anchor slab, 8-intermediate plate, 9-steel wire bundle, 10-O shape seal ring, the columnar punching cover of the existing jack of 3b-.
The specific embodiment
A kind of steel strand tension jack, as Fig. 1-shown in Figure 2, this steel strand tension jack comprises oil cylinder 5, be positioned at the seal ring 6 of oil cylinder 5 one ends, be positioned at oil cylinder 5 piston 4, be installed in piston punching cover 3, be positioned at closing plate 2 and hold-down ring 1 that oil cylinder 5 other ends are installed successively, different with existing jack is: described punching cover 3 is cylinder bodily forms, along being distributed with the aperture 31 that connects cylinder, is used for steel strand on the circumference of cylinder axis.
In Fig. 1-Fig. 2, the aperture that connect tubular punching cover, is used for steel strand is distributed with two circles, along cylinder bodily form axis rectangular distribution for circular inside and outside the aperture.
As a kind of conversion of the present utility model, the tubular punching cover of described perforation, the shape that is used for the aperture of steel strand can also be ellipse or n limit shape, and each aperture is evenly arranged, n is 4,6,8 ... arbitrary integer between 16.
Claims (2)
1. steel strand tension jack
,Comprise oil cylinder (5), be positioned at oil cylinder one end seal ring (6), be positioned at in-oil cylinder piston (4), be installed in piston the punching cover, be positioned at closing plate (2) and hold-down ring (1) that the oil cylinder other end is installed successively, it is characterized in that: described punching cover is the cylinder bodily form, along being distributed with the aperture that connects cylinder, is used for steel strand on the circumference of cylinder axis.
2. a kind of steel strand tension jack according to claim 1
,It is characterized in that: the aperture that connect tubular punching cover, is used for steel strand is circular, ellipse or n limit shape, and each aperture is evenly arranged, n is 4,6,8 ... arbitrary integer between 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019604 CN203095516U (en) | 2013-01-15 | 2013-01-15 | Steel strand tensioning jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019604 CN203095516U (en) | 2013-01-15 | 2013-01-15 | Steel strand tensioning jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203095516U true CN203095516U (en) | 2013-07-31 |
Family
ID=48846935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320019604 Expired - Fee Related CN203095516U (en) | 2013-01-15 | 2013-01-15 | Steel strand tensioning jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203095516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106315451A (en) * | 2016-10-18 | 2017-01-11 | 柳州黔桥工程材料有限公司 | Integral automatic synchronous control system for steel strand group anchors |
-
2013
- 2013-01-15 CN CN 201320019604 patent/CN203095516U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106315451A (en) * | 2016-10-18 | 2017-01-11 | 柳州黔桥工程材料有限公司 | Integral automatic synchronous control system for steel strand group anchors |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20200115 |