CN203373998U - Single-trundle steel strand limiting tool - Google Patents
Single-trundle steel strand limiting tool Download PDFInfo
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- CN203373998U CN203373998U CN201320314618.6U CN201320314618U CN203373998U CN 203373998 U CN203373998 U CN 203373998U CN 201320314618 U CN201320314618 U CN 201320314618U CN 203373998 U CN203373998 U CN 203373998U
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- guide rail
- trundle
- steel strand
- movable
- threader
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Abstract
The utility model discloses a single-trundle steel strand limiting tool, and belongs to the field of constructional engineering. The tool comprises a base and further comprises a fixed block, a guide rail and a movable threading device, wherein the guide rail is composed of an upper half guide rail and a lower half guide rail, and one end of the upper half guide rail and one end of the lower half guide rail are both connected with the fixed block; the movable threading device comprises a threading ring, a connecting rib, a spoke suspension frame and a trundle, the spoke suspension frame is a rectangular frame and comprises a first vertical plate, a transverse plate, a second vertical plate, a first trundle shaft and a second trundle shaft, and the first trundle shaft and the second trundle shaft are located on the inner side of the first vertical plate and the inner side of the second vertical plates respectively; the trundle is located in a cross-shaped horizontal sliding way between the upper half guide rail and the lower half guide rail. The single-trundle steel strand limiting tool limits steel strands through the movable threading device rolling through one trundle, can be flexibly applied in the stretching and drawing process of different numbers of steel strands, effectively prevents broken steel strands from injuring workers, and is convenient to install and easy to promote.
Description
Technical field
The invention belongs to construction work, more particularly, relate to a kind of monocycly steel strand limiting tool.
Background technology
Prestressed concrete is through the development of over half a century progressively ripe along with prestressing technique, and having broken through concrete can not tension and the constraint of cracking, has greatly expanded its range of application.At present, prestressed concrete has become the topmost a kind of structural meterials of domestic and abroad bridge engineering, the larger bridge for span, the prestressing steel used mostly is steel strand, but the disadvantages such as weight is large, easy-to-rust that these class steel still have, the stretching process that adds steel strand is to carry out the external of stretch-draw crossbeam, need to accept the pulling force from the large ton amount of the hydraulic tests such as jack, very easily stress such as concentrates at the former thereby accident such as burst apart, fracture, and the steel wire of bounce-back can produce great life danger to construction workman on every side.The steel wire of some bounce-back rebound the people on the face or with it, the lighter can cause skin trauma, severe one may threat to life.How can better stretching steel strand but existing equipment was only considered in when design, seldom consider the problem of bounce-back after the steel strand fracture.For example: China Patent No. is 201110145481.1, and open day is on December 28th, 2011, discloses the patent document that a name is called the prestressing force anti-fatigue girder, and this invention belongs to technical field of civil engineering, is specifically related to a kind of prestressing force anti-fatigue girder.By top flange, bottom flange, web, the bearing stiffener prestressing force anchor slab of holding concurrently, anchor hole, the high-strength prestress steel strand, anchoring stiffening plate, anchor head, arc, bearing steel corbel and anti-sidesway cushion block form, to penetrate prestress wire near the anchor hole of the tension edge of a wing about the web symmetry, use the anchor head anchoring after stretch-draw, thereby the tensile region to girder steel produces precompression, make it consider after Relaxation of prestressing that compressive stress is greater than the lower tensile stress of deadweight and add tired tensile stress amplitude, the bottom flange of beam can not enter tension under deadweight and fatigue loading compound action yet, thereby solved fatigue problem.This invention makes design Fatigue Stress Amplitude in bottom flange be confined to allow Fatigue Stress Amplitude to bring up to approach design strength f from former, anti-fatigue ability significantly improves, the strength problem that the brittle fracture of the labor that weakens is ductility, the ultimate strength of bottom flange almost doubles, and has significantly improved the stock utilization of high strength steel.
China Patent No. is 02235214.7, open day is on December 25th, 2002, the patent document that a name is called prestressed large-span solid abdomen steel beam structure system is disclosed, this disclosure of the invention a kind of prestressed large-span solid abdomen steel beam structure system, the single span girder steel or the multispan continuous steel beam that comprise I-shaped or box section, and in the both sides of its steel beam web plate, be provided with two groups of symmetrical presstressed reinforcing steels along its length, these presstressed reinforcing steel both ends are anchored on the ground tackle be fixed on girder steel.Every group of presstressed reinforcing steel be a branch of more than, elongated or only at girder steel, bear the position that tensile stress is larger and arrange along girder steel, it can be parallel with steel beam web plate or be an angle with steel beam web plate.Presstressed reinforcing steel is bent and pass the preformed hole on frange plate, on the girder steel frange plate that it is corresponding with the presstressed reinforcing steel bending place and web, increases and is welded with the gusset of putting more energy into.The steel structure girder installation in position and fixing after, girder steel applied to prestressing force form prestressed large-span solid abdomen steel beam structure system by two groups of presstressed reinforcing steels being carried out to stretch-draw, can be used for steel building that beam span is larger or bridge etc.
Above-mentioned girder steel is applied very extensive in the manufacture process of the larger bridge of span; but it is in work progress; there is no to prevent the protective device flown up because fractureing of steel strand, steel strand are in the external tension of girder steel, and need the workman to operate to adjust the connecting portion of steel strand.If the lateral stress excessive tensile strength that surpasses steel strand of moment applied, the accident that easily breaks, to workman's life generation threat.
Summary of the invention
the problem that 1, will solve
For the above-mentioned problems in the prior art, the invention provides a kind of monocycly steel strand limiting tool, its movable threader rolled by single-wheel carries out spacing to steel strand, but flexible Application is in the stretch-draw engineering of varying number steel strand, effectively prevent that the steel strand that break from damaging the workman, easy for installation, be easy to promote.
2, technical scheme
In order to address the above problem, the technical solution adopted in the present invention is as follows:
A kind of monocycly steel strand limiting tool, comprise base, also comprises fixed block, guide rail, movable threader, and described fixed block is fixed on an end of base; Described guide rail is comprised of first guide rail and second guide rail, and an end of described first guide rail and second guide rail all is connected with fixed block; The bottom vertical of described second guide rail is fixed on base; Described first guide rail bottom has the first groove upwards along axis direction, second guide rail top has the second downward groove along axis direction, and it is criss-cross horizontal slide that the space between described the first groove, the second groove and first guide rail and second guide rail forms cross section; Described movable threader comprises thimble, dowel, spoke suspension, steamboat, and described dowel upper end is connected with thimble, and lower end is connected with the spoke suspension; Described spoke suspension is rectangular frame, comprises the first vertical plate, transverse slat, the second vertical plate, the first wheel shaft, the second wheel shaft, and described the first wheel shaft, the second wheel shaft lay respectively at the inboard of the first vertical plate, the second vertical plate; Described steamboat has one, is installed between the first wheel shaft, the second wheel shaft; In the criss-cross horizontal slide of described steamboat between first guide rail and second guide rail.
Preferably, on the end of described base away from fixed block, also be provided with jack, this end also is provided with block; The shape of described block lower surface and the shape of jack are complementary.
Preferably, described guide rail, movable threader are made by stainless steel.
Preferably, the weight of described movable threader is 0.8-1.3kg.
More preferably, scribble lubrication oil in described guide rail.
More preferably, described movable threader has 12-35.
3, beneficial effect
Than prior art, beneficial effect of the present invention is:
(1) the present invention uses the movable threader with roller, and is designed with supporting with it guide rail, but flexible Application effectively prevents that the steel strand that break from damaging the workman in the stretch-draw engineering of varying number steel strand, easy for installation, is easy to promote;
(2) guide rail of the present invention, movable threader are made by stainless steel, have guaranteed limit strength;
(3) scribble lubrication oil in guide rail of the present invention, make the installation of threader more convenient.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
The cross sectional representation that Fig. 2 is guide rail of the present invention;
The structural representation that Fig. 3 is activity threader of the present invention;
The structural representation that Fig. 4 is spoke suspension of the present invention;
Fig. 5 is the cavity assembly relation schematic diagram in activity threader of the present invention and guide rail.
In figure: 1, base; 2, fixed block; 3, guide rail; 4, movable threader; 5, thimble; 6, dowel; 7, spoke suspension; 8, steamboat; 9, the first vertical plate; 10, transverse slat; 11, the second vertical plate; 12, the second wheel shaft; 13, the first wheel shaft.
The specific embodiment
Below in conjunction with concrete accompanying drawing, describe the present invention.
embodiment 1
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, a kind of monocycly steel strand limiting tool, comprise base 1, also comprises fixed block 2, guide rail 3, movable threader 4, fixed block 2 is fixed on an end of base 1; Guide rail 3 is comprised of first guide rail and second guide rail, and an end of first guide rail and second guide rail all is connected with fixed block 2; The bottom vertical of second guide rail is fixed on base 1; First guide rail bottom has the first groove upwards along axis direction, second guide rail top has the second downward groove along axis direction, and it is criss-cross horizontal slide that the space between the first groove, the second groove and first guide rail and second guide rail forms cross section; Movable threader 4 comprises thimble 5, dowel 6, spoke suspension 7, steamboat 8, and dowel 6 upper ends are connected with thimble 5, and lower end is connected with spoke suspension 7; Spoke suspension 7 is rectangular frame, comprises that the first vertical plate 9, transverse slat 10, the second vertical plate 11, the first wheel shaft 13, the second wheel shaft 12, the first wheel shafts 13, the second wheel shaft 12 lay respectively at the inboard of the first vertical plate 9, the second vertical plate 11; Steamboat 8 has one, is installed between the first wheel shaft 13, the second wheel shaft 12; In the criss-cross horizontal slide of steamboat 8 between first guide rail and second guide rail.
Also be provided with jack on the end of base 1 away from fixed block 2, this end also is provided with block; The shape of block lower surface and the shape of jack are complementary; Guide rail 3, movable threader 4 are made by stainless steel; The weight of movable threader 4 is 0.9kg; Scribble lubrication oil in guide rail 3; Movable threader 4 has 19.
During use, according to the quantity of the steel strand of required stretch-draw, select the movable threader 4 of respective numbers, and be installed in guide rail 3, then every steel strand are passed to the thimble 5 on movable threader 4, finally insert block.
embodiment 2
With embodiment 1, difference is that the weight of movable threader 4 is 1.3kg, and quantity is 12.
embodiment 3
With embodiment 1, difference is that the weight of movable threader 4 is 0.8kg, and quantity is 35.
Below schematically the present invention and embodiment thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of embodiments of the present invention, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that do not break away from the invention aim, without the creationary frame mode similar to this technical scheme and the embodiment of designing, all should belong to protection scope of the present invention.
Claims (6)
1. a monocycly steel strand limiting tool, comprise base (1), it is characterized in that: also comprise fixed block (2), guide rail (3), movable threader (4), described fixed block (2) is fixed on an end of base (1); Described guide rail (3) is comprised of first guide rail and second guide rail, and an end of described first guide rail and second guide rail all is connected with fixed block (2); The bottom vertical of described second guide rail is fixed on base (1); Described first guide rail bottom has the first groove upwards along axis direction, second guide rail top has the second downward groove along axis direction, and it is criss-cross horizontal slide that the space between described the first groove, the second groove and first guide rail and second guide rail forms cross section; Described movable threader (4) comprises thimble (5), dowel (6), spoke suspension (7), steamboat (8), and described dowel (6) upper end is connected with thimble (5), and lower end is connected with spoke suspension (7); Described spoke suspension (7) is rectangular frame, comprise the first vertical plate (9), transverse slat (10), the second vertical plate (11), the first wheel shaft (13), the second wheel shaft (12), described the first wheel shaft (13), the second wheel shaft (12) lay respectively at the inboard of the first vertical plate (9), the second vertical plate (11); Described steamboat (8) has one, is installed between the first wheel shaft (13), the second wheel shaft (12); In the criss-cross horizontal slide of described steamboat (8) between first guide rail and second guide rail.
2. monocycly steel strand limiting tool according to claim 1, it is characterized in that: also be provided with jack on the end of described base (1) away from fixed block (2), this end also is provided with block; The shape of described block lower surface and the shape of jack are complementary.
3. monocycly steel strand limiting tool according to claim 1, it is characterized in that: described guide rail (3), movable threader (4) are made by stainless steel.
4. monocycly steel strand limiting tool according to claim 3, it is characterized in that: the weight of described movable threader (4) is 0.8-1.3kg.
5. according to the described monocycly steel strand of claim 2 or 3 limiting tool, it is characterized in that: described guide rail scribbles lubrication oil in (3).
6. monocycly steel strand limiting tool according to claim 5, it is characterized in that: described movable threader (4) has 12-35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320314618.6U CN203373998U (en) | 2013-06-04 | 2013-06-04 | Single-trundle steel strand limiting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320314618.6U CN203373998U (en) | 2013-06-04 | 2013-06-04 | Single-trundle steel strand limiting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203373998U true CN203373998U (en) | 2014-01-01 |
Family
ID=49836541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320314618.6U Expired - Fee Related CN203373998U (en) | 2013-06-04 | 2013-06-04 | Single-trundle steel strand limiting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203373998U (en) |
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2013
- 2013-06-04 CN CN201320314618.6U patent/CN203373998U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20140604 |