CN106276684A - The single pre-tightening apparatus of multipoint mode steel strand wires - Google Patents
The single pre-tightening apparatus of multipoint mode steel strand wires Download PDFInfo
- Publication number
- CN106276684A CN106276684A CN201610904290.1A CN201610904290A CN106276684A CN 106276684 A CN106276684 A CN 106276684A CN 201610904290 A CN201610904290 A CN 201610904290A CN 106276684 A CN106276684 A CN 106276684A
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- top board
- lower platen
- steel strand
- strand wires
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/26—Adaptations or arrangements of pistons
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of single pre-tightening apparatus of multipoint mode steel strand wires, there is multiple pretightening jack, the oil cylinder securing member assembly of pretightening jack is fixed as the structure that front and back ends is concordant, at the piston that bidirectional piston is band through hole of each oil cylinder so that the structure that steel strand wires are passed by through bidirectional piston endoporus；Multiple bidirectional pistons connect into the structure simultaneously moved to same direction；Securing member assembly includes top board, lower platen, the front end of the oil cylinder of described pretightening jack is connected with the inner side of top board, the rear end of the oil cylinder of pretightening jack is connected with inside lower platen, between top board, lower platen, it is provided with screw rod, by screw rod, top board, lower platen, oil cylinder is fastened as a whole.Its advantage is to realize many power muscle the most individually pretension function, easy construction, and efficiency is high, and labor strength is low；The easily pretightning force of each power muscle of equal control；Pretightening jack compact structure, lightweight, work space is little, easy to install.
Description
Technical field
The present invention relates to civil engineering construction machinery and technical field of construction, particularly to a kind of multipoint mode steel strand wires list
Root pre-tightening apparatus.
Background technology
In the engineerings such as prestressed stretch-draw, the lifting of large-scale component, traction, it is both needed to first presstressed reinforcing steel or load muscle be carried out
Pretension so that every presstressed reinforcing steel or load muscle stress are basically identical, the most just can carry out integral tension and lifting, traction.Mesh
The pretightening jack of front use is front clip type jack, has following defects that (1) this jack volume is relatively big, required erector
Make space the biggest, and can only a pretension, every pretension complete one just dismounting jack once, efficiency is low, artificial labor
Fatigue resistance is big.(2) successively the power muscle of pretension may influence each other so that pretightning force is inaccurate, inconsistent.
Summary of the invention
It is an object of the invention to provide and a kind of can be used for the prestressing force such as prestressed stretch-draw, the lifting of large-scale component, traction
Bundle pretension, utilizes the small-sized pretightening jack operation simultaneously of multiple stage compact conformation, can realize many power muscle the most pre-
Tight function, easy construction, efficiency is high, and pretightning force controls the uniform single pre-tightening apparatus of multipoint mode steel strand wires.
The solution of the present invention is such that
A kind of single pre-tightening apparatus of multipoint mode steel strand wires, has multiple pretightening jack, and the oil cylinder of described pretightening jack is with tight
Firmware assembly is fixed as the structure that front and back ends is concordant, at the piston that bidirectional piston is band through hole of each oil cylinder so that steel strand wires
The structure passed by through bidirectional piston endoporus；Multiple bidirectional pistons connect into the structure simultaneously moved to same direction.
More specifically technical scheme also includes: the front end of described bidirectional piston is protruding, and the termination of its extension is arranged
There is screw thread to be connected with single hole moveable anchor when constructing.
Further: described securing member assembly includes top board, lower platen, the front end of the oil cylinder of described pretightening jack with
The inner side of top board connects, and the rear end of the oil cylinder of pretightening jack is connected with inside lower platen, sets between top board, lower platen
It is equipped with screw rod, by screw rod, top board, lower platen, oil cylinder is fastened as a whole；Described top board and lower platen sound all have logical
Hole is passed through for bidirectional piston.
Further: to be provided with oil cylinder junction inside described top board, inside lower platen and block oil cylinder external diameter
Counterbore.
The invention have the advantage that
1, realizing many power muscle the most individually pretension function, easy construction, efficiency is high, and labor strength is low.
2, the pretightning force of each power muscle of easy equal control.
3, pretightening jack compact structure, lightweight, work space is little, easy to install.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is that the hydraulic circuit of the present invention connects scheme of installation.
In figure, reference is: 1, steel strand wires, 2, bidirectional piston, 3, top board, 4, sealing plate, 5, plug, 6, support spiral shell
Bar 7, oil cylinder, 8, lower platen 9, oil return opening 10, Glais ring, 11, oil-in 12, sealing ring 13, oil-feed multiway valve, 14,
Pumping plant 15, oil return multiway valve.
Detailed description of the invention
As it is shown in figure 1, the present invention has multiple pretightening jack, the oil cylinder 7 securing member assembly of described pretightening jack
It is fixed as the structure that front and back ends is concordant, is symmetrically arranged with plug 5, sealing plate 4 at the internal two ends of described oil cylinder 7；Described two-way work
Plug 2 can stretch cylinder along oil cylinder 7 is the most two-way, and wherein front end is protruding, when the termination of its extension is provided with screw thread to construct
It is connected with single hole moveable anchor.The piston that bidirectional piston 2 is band through hole at each oil cylinder 7 so that steel strand wires 1 are by through double
The structure passed to piston 2 endoporus；Multiple bidirectional pistons 2 connect into the structure simultaneously moved to same direction.
Described securing member assembly includes top board 3, lower platen 8, the front end of the oil cylinder 7 of described pretightening jack and top board
The inner side of 3 connects, and the rear end of the oil cylinder 7 of pretightening jack is connected inside lower platen 8, sets between top board 3, lower platen 8
It is equipped with screw rod 6, by screw rod 6, top board 3, lower platen 8, oil cylinder 7 is fastened as a whole；Inside described top board 3, lower platen
Be provided with the counterbore blocking oil cylinder external diameter inside 8 with oil cylinder junction, oil cylinder 7 two ends respectively with top board 3 inside, lower platen 8
The counterbore of inner side connects, fixing to oil cylinder 7 location by counterbore；Described top board 3 and lower platen 8 sound all have through hole for two-way
Piston 2 passes through.
During pretension construction, a pretightening jack installed by steel strand wires, and the total in-line of pumping plant divides connection through multiway valve
The oil-in of each pretightening jack, the total oil return line of pumping plant oil return taps each pretightening jack oil return opening through multiway valve.
As in figure 2 it is shown, when pretension is constructed, jack fuel feeding given by pumping plant 14, and fluid is after oil-feed multiway valve 13 shunts
Entering oil-feed cylinder by oil-in 11 to each pretightening jack fuel feeding, hydraulic oil respectively, piston 2 forward extends out, thus twists steel
Line 1 exerts a force, it is achieved pretension works.When pretension terminates backhaul, hydraulic oil passes through back through oil return multiway valve 15 respectively from pumping plant 14
Hydraulic fluid port 9 enters jack oil return cylinder, piston 2 backhaul.
The present invention can be used for the pretension of presstressed reinforcing steel during prestressed stretch-draw, large-scale component promote, traction time track cable pre-
Tight and the construction of other similar projects, can realize the continuous pretension of existing overlength power muscle in conjunction with automated tool anchor.
Claims (4)
1. the single pre-tightening apparatus of multipoint mode steel strand wires, it is characterised in that: having multiple pretightening jack, described pretension is very heavy
The oil cylinder (7) on top is fixed as, with securing member assembly, the structure that front and back ends is concordant, and the bidirectional piston (2) in each oil cylinder (7) is band
The piston of through hole so that the structure that steel strand wires (1) are passed by through bidirectional piston (2) endoporus；Multiple bidirectional pistons (2) are even
It is connected into the structure simultaneously moved to same direction.
The single pre-tightening apparatus of multipoint mode steel strand wires the most according to claim 1, it is characterised in that: described bidirectional piston (2)
Front end protruding, the termination of its extension be provided with screw thread in case construction time be connected with single hole moveable anchor.
The single pre-tightening apparatus of multipoint mode steel strand wires the most according to claim 1, it is characterised in that: described securing member assembly bag
Including top board (3), lower platen (8), the front end of the oil cylinder (7) of described pretightening jack is connected with the inner side of top board (3), pretension
The rear end of the oil cylinder (7) of jack is connected with lower platen (8) inner side, is provided with screw rod at top board (3), lower platen between (8)
(6), by screw rod (6), top board (3), lower platen (8), oil cylinder (7) are fastened as a whole；Described top board (3) and lower platen
(8) sound all have through hole for bidirectional piston (2) pass through.
The single pre-tightening apparatus of multipoint mode steel strand wires the most according to claim 3, it is characterised in that: in described top board (3)
Inner side, lower platen (8) inner side are provided with, with oil cylinder junction, the counterbore blocking oil cylinder external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610904290.1A CN106276684A (en) | 2016-10-18 | 2016-10-18 | The single pre-tightening apparatus of multipoint mode steel strand wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610904290.1A CN106276684A (en) | 2016-10-18 | 2016-10-18 | The single pre-tightening apparatus of multipoint mode steel strand wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106276684A true CN106276684A (en) | 2017-01-04 |
Family
ID=57718448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610904290.1A Pending CN106276684A (en) | 2016-10-18 | 2016-10-18 | The single pre-tightening apparatus of multipoint mode steel strand wires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106276684A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236079A (en) * | 2020-03-01 | 2020-06-05 | 河南交院工程技术有限公司 | Dual-mode self-calibration tensioning equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2224194Y (en) * | 1995-06-27 | 1996-04-10 | 郝晋昇 | Group stretch-draw jack |
| KR20040097857A (en) * | 2003-05-13 | 2004-11-18 | 이영환 | Simultaneous Multi-strand Jacking Machine Producing Uniform Prestressing Forces for all Simultaneously Jacked Tendons |
| CN103526948A (en) * | 2013-10-24 | 2014-01-22 | 柳州黔桥工程材料有限公司 | Control method of intelligent tension system and intelligent tension system |
| CN204400574U (en) * | 2014-12-30 | 2015-06-17 | 东北石油大学 | A kind of continuously towing system for civil engineering |
| CN206188303U (en) * | 2016-10-18 | 2017-05-24 | 柳州黔桥工程材料有限公司 | Single preloading device of multipoint mode steel strand wires |
-
2016
- 2016-10-18 CN CN201610904290.1A patent/CN106276684A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2224194Y (en) * | 1995-06-27 | 1996-04-10 | 郝晋昇 | Group stretch-draw jack |
| KR20040097857A (en) * | 2003-05-13 | 2004-11-18 | 이영환 | Simultaneous Multi-strand Jacking Machine Producing Uniform Prestressing Forces for all Simultaneously Jacked Tendons |
| CN103526948A (en) * | 2013-10-24 | 2014-01-22 | 柳州黔桥工程材料有限公司 | Control method of intelligent tension system and intelligent tension system |
| CN204400574U (en) * | 2014-12-30 | 2015-06-17 | 东北石油大学 | A kind of continuously towing system for civil engineering |
| CN206188303U (en) * | 2016-10-18 | 2017-05-24 | 柳州黔桥工程材料有限公司 | Single preloading device of multipoint mode steel strand wires |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236079A (en) * | 2020-03-01 | 2020-06-05 | 河南交院工程技术有限公司 | Dual-mode self-calibration tensioning equipment |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |
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| WD01 | Invention patent application deemed withdrawn after publication |