CN103276669A - Domestic-sale-type steel strand limiting device - Google Patents
Domestic-sale-type steel strand limiting device Download PDFInfo
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- CN103276669A CN103276669A CN2013102104886A CN201310210488A CN103276669A CN 103276669 A CN103276669 A CN 103276669A CN 2013102104886 A CN2013102104886 A CN 2013102104886A CN 201310210488 A CN201310210488 A CN 201310210488A CN 103276669 A CN103276669 A CN 103276669A
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- cross beam
- steel strand
- vertical plate
- top rail
- lower transverse
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Abstract
The invention discloses a domestic-sale-type steel strand limiting device, and belongs to the field of constructional engineering. The domestic-sale-type steel strand limiting device comprises a left cross beam and a right cross beam. The left cross beam comprises a first upper cross beam, a first lower cross beam, a first vertical plate and a first supporting plate. One end of the first upper cross beam and one end of the first lower cross beam are both fixed on the first vertical plate. The first supporting plate is fixed on one side of the first vertical plate. An end portion of the first upper cross beam and an end portion of the first lower cross beam are provided with a first pin hole and a second pin hole respectively. The right cross beam comprises a second upper cross beam, a second lower cross beam, a second supporting plate and a second vertical plate. One end of the second upper cross beam and one end of the second lower cross beam are both fixed on the second vertical plate. According to the domestic-sale-type steel strand limiting device, the left cross beam and the right cross beam are in butt joint with each other through a plug pin to form an integral whole, operation is convenient, the situation that a broken steel strand flies out to injure people can be effectively prevented, occupied space is small and popularizing is easy.
Description
Technical field
The invention belongs to building engineering field, more particularly, relate to a kind of sold inside the country formula steel strand stopping means.
Background technology
Prestressed concrete is through the development of over half a century and progressively ripe along with prestressing technique, and having broken through concrete can not tension and the constraint of cracking, has expanded its range of application greatly.At present, prestressed concrete has become the topmost a kind of structural meterials of domestic and abroad bridge engineering, for the bigger bridge of span, employed prestressing steel mostly is steel strand, but disadvantages such as weight is big, 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 acceptance from the pulling force of the big ton amount of hydraulic tests such as jack, very easily stress is concentrated etc. 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 on one's body, the lighter can cause skin trauma, weight person then may threat to life.How but existing equipment the time has only considered that in design each can better stretching steel strand, seldom considers the problem of steel strand fracture back bounce-back.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 prestressing force antifatigue girder steel, and this invention belongs to technical field of civil engineering, is specifically related to a kind of prestressing force antifatigue girder steel.By the top flange, the bottom flange, web, the bearing stiffener prestressing force anchor slab of holding concurrently, anchor hole, the high-strength prestress steel strand, the anchoring stiffener, anchor head, arc, bearing steel corbel and anti-sidesway cushion block are formed, be near the anchor hole of the tension edge of a wing about the web symmetry, to penetrate prestress wire, use the anchor head anchoring after the stretch-draw, thereby the tensile region to girder steel produces precompression, make it consider that the lax back of prestressing force compressive stress adds tired tensile stress amplitude greater than tensile stress under the deadweight, then the bottom flange of beam can not enter tension yet under deadweight and fatigue loading compound action, thereby has solved fatigue problem.This invention makes bottom flange design Fatigue Stress Amplitude be confined to allow Fatigue Stress Amplitude to bring up near design strength f from former, anti-fatigue ability significantly improves, the brittle fracture of the labor that weakens is the strength problem of 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 direction, these presstressed reinforcing steel both ends are anchored on the ground tackle that is fixed on the girder steel.Every group of presstressed reinforcing steel be a branch of more than, elongated or only bear the bigger position of tensile stress at girder steel 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 preformed hole on the frange plate, increases on the girder steel frange plate that it is corresponding with the presstressed reinforcing steel bending place and the web to be welded with the gusset of putting more energy into.The steel structure girder installation in position and fixing after, girder steel applied prestressing force constitute prestressed large-span solid abdomen steel beam structure system by two groups of presstressed reinforcing steels being carried out stretch-draw, can be used for the bigger steel building of beam span or bridge etc.
Above-mentioned girder steel is used very extensive in the manufacture process of the big bridge of span; but it is in work progress; do not have to prevent the protective device that flies 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 that applies, the accident that easily breaks is to workman's life generation threat.
Summary of the invention
1, the problem that will solve
At the above-mentioned problems in the prior art, the invention provides a kind of sold inside the country formula steel strand stopping means, its left and right sides crossbeam is complete integral body by the butt joint of latch and screw, and is easy to operate, can prevent from effectively that post-rift steel strand from flying up to hurt sb.'s feelings.
2, technical scheme
In order to address the above problem, the technical solution adopted in the present invention is as follows.
A kind of sold inside the country formula steel strand stopping means comprises left crossbeam, right crossbeam; Described left crossbeam comprises first top rail, first lower transverse beam, first vertical plate and first gripper shoe; Described first top rail, first lower transverse beam be arranged in parallel up and down; One end of described first top rail, first lower transverse beam all is fixed on first vertical plate; Described first gripper shoe is fixed in a side of first vertical plate; The end of described first top rail, first lower transverse beam is respectively equipped with first pin-and-hole, second pin-and-hole; Described right crossbeam comprises second top rail, second lower transverse beam, second gripper shoe and second vertical plate; Described second top rail, second lower transverse beam be arranged in parallel up and down; One end of described second top rail, second lower transverse beam all is fixed on second vertical plate; Described second gripper shoe is fixed in a side of second vertical plate; The end of described second top rail, second lower transverse beam is respectively equipped with first latch and second latch that the shape with first pin-and-hole and second pin-and-hole is complementary.
Further, be equipped with corresponding pin shaft hole on described first latch and first pin-and-hole; Be equipped with corresponding pin shaft hole on second latch and second pin-and-hole.
Further, the length of described first latch, second latch is 5cm.
Further, the spacing of described first top rail, first lower transverse beam is identical with the spacing of second top rail, second lower transverse beam.
Further, described second gripper shoe, first gripper shoe are rectangle.
Further, described second gripper shoe is vertical with second vertical plate with first vertical plate respectively with first gripper shoe.
3, beneficial effect
Adopt technical scheme provided by the invention, compare with existing technology, have following beneficial effect:
(1) the sold inside the country formula steel strand stopping means of the present invention comprises left crossbeam, right crossbeam, and left crossbeam, right crossbeam are an integral body by screw and latch butt joint, can effectively limit the steel strand that break and fly up and hurt sb.'s feelings, and is easy and simple to handle, and it is little to take up an area of the space, is easy to promote;
(2) be equipped with corresponding pin shaft hole on first latch of the sold inside the country formula steel strand stopping means of the present invention and first pin-and-hole, make the connection of left and right sides crossbeam more reliable;
(3) spacing of first top rail of the sold inside the country formula steel strand stopping means of the present invention, first lower transverse beam is identical with the spacing of second top rail, second lower transverse beam, can guarantee the complete butt joint of left and right sides crossbeam.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: 1, left crossbeam; 2, right crossbeam; 3, second gripper shoe; 4, first gripper shoe; 5, first latch; 6, second latch; 7, second pin-and-hole; 8, first pin-and-hole; 9, first top rail; 10, first lower transverse beam; 11, second top rail; 12, second lower transverse beam.
The specific embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing invention is further described.
As shown in Figure 1, a kind of sold inside the country formula steel strand stopping means, comprise left crossbeam 1, right crossbeam 2, left side crossbeam 1 comprises first top rail 9, first lower transverse beam 10, first vertical plate and first gripper shoe 4, first top rail 9, first lower transverse beam 10 be arranged in parallel up and down, and an end of first top rail 9, first lower transverse beam 10 all is fixed on first vertical plate; First gripper shoe 4 is fixed in a side of first vertical plate; The end of first top rail 9, first lower transverse beam 10 is respectively equipped with first pin-and-hole 8, second pin-and-hole 7; Right crossbeam 2 comprises second top rail 11, second lower transverse beam 12, second gripper shoe 3 and second vertical plate, and second top rail 11, second lower transverse beam 12 be arranged in parallel up and down, and an end of second top rail 11, second lower transverse beam 12 all is fixed on second vertical plate; Second gripper shoe 3 is fixed in a side of second vertical plate; The end of second top rail 11, second lower transverse beam 12 is respectively equipped with first latch 5 and second latch 6 that the shape with first pin-and-hole 8 and second pin-and-hole 7 is complementary.
Be equipped with corresponding pin shaft hole on first latch 5 and first pin-and-hole 8; Be equipped with corresponding pin shaft hole on second latch 6 and second pin-and-hole 7; The length of first latch 5, second latch 6 is 5cm; The spacing of first top rail 9, first lower transverse beam 10 is identical with the spacing of second top rail 11, second lower transverse beam 12; Second gripper shoe 3, first gripper shoe 4 are rectangle; Second gripper shoe 3 is vertical with second vertical plate with first vertical plate respectively with first gripper shoe 4.
Before steel strand are carried out stretch-draw, junction at steel strand and finish rolling screw thread, a left side crossbeam 1 from the horizontal vertical sleeve of a side on steel wire bundle, steel strand are between lower and upper cross-member, again with right crossbeam 2 from the opposite side vertical sleeve on steel strand, first latch 5 is inserted in first pin-and-hole 8, second latch 6 inserts in second pin-and-hole 7, with screw first latch 5 and first pin-and-hole 8, second latch 6 and second pin-and-hole 7 are fixed again, this moment, left crossbeam 1 was connected into a rectangular frame with 2 pairs on right crossbeam, and the steel strand of required stretch-draw all vertically pass the rectangular frame between lower and upper cross-member.
Above content only is to structure example of the present invention and explanation; under those skilled in the art described specific embodiment is made various modifications or replenish or adopt similar mode to substitute; only otherwise depart from the design of invention or surmount the defined scope of these claims, all should belong to protection scope of the present invention.
Claims (6)
1. sold inside the country formula steel strand stopping means, it is characterized in that: comprise left crossbeam (1), right crossbeam (2), described left crossbeam (1) comprises first top rail (9), first lower transverse beam (10), first vertical plate and first gripper shoe (4); Described first top rail (9), first lower transverse beam (10) be arranged in parallel up and down; One end of described first top rail (9), first lower transverse beam (10) all is fixed on first vertical plate; Described first gripper shoe (4) is fixed in a side of first vertical plate; The end of described first top rail (9), first lower transverse beam (10) is respectively equipped with first pin-and-hole (8), second pin-and-hole (7); Described right crossbeam (2) comprises second top rail (11), second lower transverse beam (12), second gripper shoe (3) and second vertical plate; Described second top rail (11), second lower transverse beam (12) be arranged in parallel up and down; One end of described second top rail (11), second lower transverse beam (12) all is fixed on second vertical plate; Described second gripper shoe (3) is fixed in a side of second vertical plate; The end of described second top rail (11), second lower transverse beam (12) is respectively equipped with first latch (5) and second latch (6) that the shape with first pin-and-hole (8) and second pin-and-hole (7) is complementary.
2. according to the described sold inside the country formula steel strand stopping means of claim 1, it is characterized in that: be equipped with corresponding pin shaft hole on described first latch (5) and first pin-and-hole (8); Be equipped with corresponding pin shaft hole on second latch (6) and second pin-and-hole (7).
3. according to the described sold inside the country formula steel strand stopping means of claim 2, it is characterized in that: the length of described first latch (5), second latch (6) is 5cm.
4. according to the described sold inside the country formula steel strand stopping means of claim 1, it is characterized in that: the spacing of described first top rail (9), first lower transverse beam (10) is identical with the spacing of second top rail (11), second lower transverse beam (12).
5. according to the described sold inside the country formula steel strand stopping means of claim 1, it is characterized in that: described second gripper shoe (3), first gripper shoe (4) are rectangle.
6. according to the described sold inside the country formula steel strand stopping means of claim 5, it is characterized in that: described second gripper shoe (3) is vertical with second vertical plate with first vertical plate respectively with first gripper shoe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102104886A CN103276669A (en) | 2013-05-31 | 2013-05-31 | Domestic-sale-type steel strand limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102104886A CN103276669A (en) | 2013-05-31 | 2013-05-31 | Domestic-sale-type steel strand limiting device |
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| Publication Number | Publication Date |
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| CN103276669A true CN103276669A (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102104886A Pending CN103276669A (en) | 2013-05-31 | 2013-05-31 | Domestic-sale-type steel strand limiting device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202081661U (en) * | 2011-05-05 | 2011-12-21 | 中建新疆建工集团第二建筑工程有限公司 | Safety protection device for prestressed tensioning anchoring end |
| JP2012144946A (en) * | 2011-01-14 | 2012-08-02 | East Japan Railway Co | Structure and method for introducing prestress |
| CN202658601U (en) * | 2012-06-02 | 2013-01-09 | 山东科技大学 | Adjustable elastic limiting plate for anchor cable |
| CN102943437A (en) * | 2012-12-04 | 2013-02-27 | 中铁二十一局集团有限公司 | Device for limiting and protecting anchoring end of vertical steel strand |
| CN202899626U (en) * | 2012-05-11 | 2013-04-24 | 中建钢构有限公司 | Outer hoop type inhaul cable stretch-draw tool device |
| CN203347245U (en) * | 2013-05-31 | 2013-12-18 | 中交二航局第四工程有限公司安徽分公司 | Inner pinned limiting device for steel strand |
-
2013
- 2013-05-31 CN CN2013102104886A patent/CN103276669A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012144946A (en) * | 2011-01-14 | 2012-08-02 | East Japan Railway Co | Structure and method for introducing prestress |
| CN202081661U (en) * | 2011-05-05 | 2011-12-21 | 中建新疆建工集团第二建筑工程有限公司 | Safety protection device for prestressed tensioning anchoring end |
| CN202899626U (en) * | 2012-05-11 | 2013-04-24 | 中建钢构有限公司 | Outer hoop type inhaul cable stretch-draw tool device |
| CN202658601U (en) * | 2012-06-02 | 2013-01-09 | 山东科技大学 | Adjustable elastic limiting plate for anchor cable |
| CN102943437A (en) * | 2012-12-04 | 2013-02-27 | 中铁二十一局集团有限公司 | Device for limiting and protecting anchoring end of vertical steel strand |
| CN203347245U (en) * | 2013-05-31 | 2013-12-18 | 中交二航局第四工程有限公司安徽分公司 | Inner pinned limiting device for steel strand |
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Application publication date: 20130904 |