CN202100011U - Puncturing traction-type stand for U-shaped pretensioned prestressing beam - Google Patents
Puncturing traction-type stand for U-shaped pretensioned prestressing beam Download PDFInfo
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- CN202100011U CN202100011U CN2011201605361U CN201120160536U CN202100011U CN 202100011 U CN202100011 U CN 202100011U CN 2011201605361 U CN2011201605361 U CN 2011201605361U CN 201120160536 U CN201120160536 U CN 201120160536U CN 202100011 U CN202100011 U CN 202100011U
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Abstract
The utility model discloses a puncturing traction-type stand for a U-shaped pretensioned prestressing beam, which comprises jacks, counterforce platforms, anchored steel cross beams, beam body reinforcement skeletons and a counterforce platform foundation wall, wherein, the counterforce platforms are arranged at two ends of the counterforce platform foundation wall; prepared holes are formed on the counterforce platforms; the jacks are arranged on the outer sides of the counterforce platforms; slide tracks are arranged between the inner sides of the counterforce platforms and the beam body reinforcement skeletons; the anchored steel cross beams are arranged on the slide tracks; and the jacks penetrate through the counterforce platforms through traction screws and are connected with the anchored steel cross beams positioned on the inner sides of the counterforce platforms. The operating strokes of the jacks are longer, the jacks are very suitable for the construction of a long-line pedestal and especially for a product line that the extension value of a steel stranded wire is great, the jacks are convenient for the overturn secondary stroke tensioning, steel high-strength nuts positioned between the jacks and the counterforce platforms are directly tightened during the sustained load period so as to be locked on the counterforce platforms, and then the jacks can be unloaded. The puncturing traction-type stand is simple and convenient to operate, is convenient to control, and has the advantages of high construction efficiency and small stress loss. The puncturing traction-type stand can achieve good stability and good safety under the action of large tonnage. The puncturing traction-type stand is convenient to tension and is convenient to operate.
Description
Technical field
The utility model relates to a kind of site plant of pre-stress construction, and particularly a kind of pretensioned prestressing U-shaped beam is with the towed pedestal of punching.
Background technology
Existing push mode tensioning equipment is: counter-force platform foundation wall 1-1 goes up two ends stretch-drawing beam 1-2 and counter-force platform 1-3 is set respectively, and stretch-drawing beam 1-2 is positioned at the counter-force platform 1-3 outside.Between stretch-drawing beam 1-2 and counter-force platform 1-3, pedestal type jack 1-4 is set.The steel strand two ends directly are fixed on the stretch-drawing beam 1-2 at two ends.Used pedestal type jack 1-4 has eight, and every is 600 tonnes, tentioning stroke 200mm.Concrete structure is as shown in Figure 1.
This push mode tensioning equipment is mainly used in the synchronous whole prestretching of prestress wire, also can be used for simultaneously whole exceptionally straight to behind the prestress wire initial tensioning.The weak point that exists is: jack allows impulse stroke shorter, and the big production line of suitable long-line pedestal construction steel strand stretch value is not easy to the secondary stroke of falling top stretch-draw, holds that the lotus stage will add the backing plate load so that jack unloads.The backing plate decrement is bigger, and stress loss is obvious.Must restraint little jack coordinative construction with list; Stroke is unsuitable long, and security and stability is poor.The stressed span of stretch-drawing beam is bigger, and rigidity requirement is high.
Summary of the invention
The utility model provides a kind of pretensioned prestressing U-shaped beam with the towed pedestal of punching, to solve the problem that exists in the prior art.
The technical scheme that the utility model adopts is such: a kind of pretensioned prestressing U-shaped beam is with the towed pedestal of punching; Comprise jack, counter-force platform, anchoring gooseneck, beam body cage of reinforcement and counter-force platform foundation wall; Said counter-force platform is arranged on counter-force platform foundation wall two ends; Said counter-force platform is provided with preformed hole, and said jack is arranged on the counter-force platform outside, between counter-force platform inboard and the beam body cage of reinforcement sliding rail is set; The anchoring gooseneck is set on the sliding rail, and said jack passes the counter-force platform through traction screw and is connected with its inboard anchoring gooseneck.
As preferably, jack is the vertically-displacable jack, and every impulse stroke is 600mm, and counter-force platform foundation wall two ends respectively distribute four.Also can only arrange that fixed end is anchored on the counter-force platform through the anchoring nut in the working end.
As preferably, said anchoring gooseneck carries out fixed-site through the high-strength nut of rod iron between jack and the counter-force platform.
In sum, compared with prior art, owing to adopted technique scheme, the beneficial effect of the utility model is:
1, the impulse stroke of jack is less demanding; Very suitable long-line pedestal construction is especially to the big production line of steel strand stretch value; Be convenient to repeatedly stroke stretch-draw, hold and directly tighten the high-strength nut of rod iron period in lotus stage and be anchored on the counter-force platform, so that the jack unloading.Easy and simple to handle, stress loss is little, is convenient to control;
2, good stability under the large-tonnage active force, safety are good.Put a convenience, be convenient to operation.Efficiency of construction is high.
Description of drawings
Fig. 1 is the structural representation of push mode tensioning equipment.
Fig. 2 is the vertical view of the utility model.
Fig. 3 is the three-dimensional working condition chart of the utility model.
Mark among the figure: 1-1 is a counter-force platform foundation wall, and 1-2 is a stretch-drawing beam, and 1-3 is the counter-force platform, and 1-4 is the pedestal type jack; 1 is jack, and 2 is the counter-force platform, and 3 are the anchoring gooseneck, and 4 is steel strand; 5 is beam body cage of reinforcement, and 6 is counter-force platform foundation wall, and 7 is traction screw.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Like Fig. 2, shown in Figure 3; A kind of pretensioned prestressing U-shaped beam is with the towed pedestal of punching; Comprise jack 1, counter-force platform 2, anchoring gooseneck 3, beam body cage of reinforcement 5 and counter-force platform foundation wall 6, said counter-force platform 2 is arranged on counter-force platform foundation wall 6 two ends, and said counter-force platform 2 is provided with preformed hole; Said jack 1 is arranged on counter-force platform 2 outsides; Between counter-force platform 2 inboards and the beam body cage of reinforcement 5 sliding rail is set, anchoring gooseneck 3 is set on the sliding rail, said jack 1 passes counter-force platform 2 through traction screw 7 and is connected with its inboard anchoring gooseneck 3.
Jack 1 is the vertically-displacable jack, and every impulse stroke is 600mm, and counter-force platform foundation wall 6 two ends respectively distribute four.Also can only arrange that fixed end is anchored on the counter-force platform through the anchoring nut in the working end.
Said anchoring gooseneck 3 carries out fixed-site through the high-strength nut of rod iron between jack and the counter-force platform 2.
Beam body cage of reinforcement 5 is passed at steel strand 4 two ends, is fixed on the anchoring gooseneck 3, and each steel strand 4 is pressed design attitude and arranged.
When reality is used, digital display sensor and synchronous control system can also be installed on equipment, integral tension is to design stress again after just drawing through Dan Shu, and the Stress Control precision is high.
Claims (3)
1. a pretensioned prestressing U-shaped beam is with the towed pedestal of punching; Comprise jack (1), counter-force platform (2), anchoring gooseneck (3), beam body cage of reinforcement (5) and counter-force platform foundation wall (6); Said counter-force platform (2) is arranged on counter-force platform foundation wall (6) two ends; It is characterized in that: said counter-force platform (2) is provided with preformed hole; Said jack (1) is arranged on counter-force platform (2) outside; Between counter-force platform (2) inboard and the beam body cage of reinforcement (5) sliding rail is set, anchoring gooseneck (3) is set on the sliding rail, said jack (1) passes counter-force platform (2) through traction screw (7) and is connected with its inboard anchoring gooseneck (3).
2. a kind of pretensioned prestressing U-shaped beam according to claim 1 is with the towed pedestal of punching, and it is characterized in that: jack (1) is the vertically-displacable jack, and every impulse stroke is 600mm, and counter-force platform foundation wall (6) two ends respectively distribute four.
3. a kind of pretensioned prestressing U-shaped beam according to claim 1 and 2 is characterized in that with the towed pedestal of punching: said anchoring gooseneck (3) carries out fixed-site through the high-strength nut of rod iron between jack and the counter-force platform (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201605361U CN202100011U (en) | 2011-05-19 | 2011-05-19 | Puncturing traction-type stand for U-shaped pretensioned prestressing beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201605361U CN202100011U (en) | 2011-05-19 | 2011-05-19 | Puncturing traction-type stand for U-shaped pretensioned prestressing beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100011U true CN202100011U (en) | 2012-01-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201605361U Expired - Fee Related CN202100011U (en) | 2011-05-19 | 2011-05-19 | Puncturing traction-type stand for U-shaped pretensioned prestressing beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100011U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785290A (en) * | 2011-05-19 | 2012-11-21 | 中铁二十三局集团轨道交通工程有限公司 | Core-penetrating pull-type pedestal for pre-tensioned pre-stressing U-shaped beam and construction method thereof |
-
2011
- 2011-05-19 CN CN2011201605361U patent/CN202100011U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785290A (en) * | 2011-05-19 | 2012-11-21 | 中铁二十三局集团轨道交通工程有限公司 | Core-penetrating pull-type pedestal for pre-tensioned pre-stressing U-shaped beam and construction method thereof |
| CN102785290B (en) * | 2011-05-19 | 2014-11-19 | 中铁二十三局集团轨道交通工程有限公司 | Core-penetrating pull-type pedestal for pre-tensioned pre-stressing U-shaped beam and construction method thereof |
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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: 20120104 Termination date: 20160519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |