CN103255723A - Pulley type steel strand limitation tool - Google Patents
Pulley type steel strand limitation tool Download PDFInfo
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- CN103255723A CN103255723A CN2013102160829A CN201310216082A CN103255723A CN 103255723 A CN103255723 A CN 103255723A CN 2013102160829 A CN2013102160829 A CN 2013102160829A CN 201310216082 A CN201310216082 A CN 201310216082A CN 103255723 A CN103255723 A CN 103255723A
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- vertical plate
- guide rail
- wheel shaft
- steel strand
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Abstract
The invention provides a pulley type steel strand limitation tool and belongs to the field of constructional engineering. The pulley type steel strand limitation tool comprises a base, a guide rail, a movable threading device and a connecting plate. The connecting plate is fixed at one end of the base, and an inserting hole is formed in the other end of the base. The guide rail is a horizontal sliding way, wherein the cross section of the guide rail is H-shaped. The movable threading device comprises a threading ring, a connecting rid, a spoke suspension and a small wheel, and the spoke suspension comprises a first vertical plate, a transverse plate, a second vertical plate, a first wheel shaft and a second wheel shaft. The top end of the first vertical plate and the top end of the vertical plate are respectively connected at two ends of the transverse plate. The first wheel shaft and the second wheel shaft are respectively placed on the inner side of the bottom end of the first vertical plate and the inner side of the bottom end of the second vertical plate. The pulley type steel strand limitation tool can be flexibly used in the engineering that steel strands in different numbers need to be stretched, and is capable of effectively preventing constructional workers from being hurt because of broken steel strands, convenient to install, small in occupied area and free of limitation of environments.
Description
Technical field
The invention belongs to building engineering field, specifically, relate to the spacing frock of a kind of pulley type steel strand.
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 can better stretching steel strand but existing equipment the time has only been considered in design, seldom consider the problem of steel strand fracture back bounce-back.For example: China Patent No. is 200920235908.5, open day is on July 14th, 2010, the patent document that a name is called prestressed concrete continuous box girder is disclosed, this utility model relates to prestressed concrete continuous box girder, and purpose provides a kind of prestressed concrete continuous box girder that can prevent web diagonal crack and base plate longitudinal crack.The technical scheme of this utility model is, prestressed concrete continuous box girder, comprise top board, web and base plate, be provided with vertical prestressing bar in the web, be provided with the transverse prestress muscle in the base plate, vertical and transverse prestress muscle is located in the prestressing force bellows, and described vertical prestressing bar and transverse prestress muscle are the U-shaped presstressed reinforcing steel that is wholely set.This utility model with the web vertical presstressed reinforcing steel of Prestressed Continuous Box Beam and base plate transverse prestress adhesion of tendon and muscle after injury also, make the U-shaped tension of prestressed tendon with same presstressed reinforcing steel, presstressed reinforcing steel length will improve greatly, reduce loss of prestress, reduce aspect the loss of prestress more effective, economical than traditional approach.
China Patent No. is 200810216367.1, open day is on February 18th, 2009, the patent document that a name is called a kind of combination type prestressed concrete box girder is disclosed, the characteristics of this combination type prestressed concrete box girder are: be made up of for " worker " shape prefabricated component for " Τ " shape prefabricated component and some cross sections that is arranged in parallel two cross sections, two equal symmetric arrays of " Τ " shape prefabricated component are in the both sides of " worker " shape prefabricated component; Be connected to form the box-beam structure of single-box multi-cell between the upper plate and lower shoe of " Τ " shape prefabricated component upper plate that is arranged in parallel and lower shoe and " worker " shape prefabricated component, between the upper plate of some " worker " shape prefabricated component and lower shoe by concrete conglutination.This combination type prestressed concrete box girder can be realized the batch production batch process, and it has overcome the shortcoming of steel case beam cost height, the inconvenience of cast-in-situ prestressed concrete box girder construction in the existing oblique curved pipe.The concrete component that batch production is produced in batches can be guaranteed the uniformity of its dimensions, and constant product quality both had been convenient to construction, can save the duration again, and it can satisfy real, the straight elaboration engineering construction requirement of lines in the outer light.
Above-mentioned concrete box girder is in the stretching process of vertical prestressing bar and longitudinal prestressing muscle; concrete can lose original design strength because the crack appears in elastic compression, temperature effect etc.; steel strand also can depart from fixed-direction in stretching process; the discontinuity accident that breaks; and this case beam does not arrange safeguard measure, to workman's life generation threat.Existing Design Thinking all is to consider how to prevent the fracture of steel strand, but above equipment all can not be got rid of the possibility of steel strand fracture fully, in case cause breaking of steel strand, then can cause major accident.
Summary of the invention
1, the problem that will solve
At the problems referred to above of the prior art, the invention provides the spacing frock of a kind of pulley type steel strand, it adopts the movable threader that cooperates with I-shaped guide rail, the engineering that can be used for stretch-draw varying number steel strand flexibly, the steel strand that can effectively avoid breaking damage the constructor, easy for installation, floor space is little, no environment restriction.
2, technical scheme
In order to address the above problem, the technical solution adopted in the present invention is as follows:
The spacing frock of a kind of pulley type steel strand comprises base, also comprises guide rail, movable threader and junction plate, and described junction plate is fixed on an end of base, and the other end of base has jack; Described guide rail is that cross section is the horizontal slideway of " worker " font, and both sides are fluted, and its bottom surface is fixed on the base; One end of described guide rail is connected with junction plate; Described movable threader comprises thimble, dowel, spoke suspension, steamboat, and described dowel upper end is connected with thimble, and the lower end is connected with the spoke suspension; Described spoke suspension is rectangular frame, comprises first vertical plate, transverse slat, second vertical plate, first wheel shaft, second wheel shaft; Described dowel is fixed on the transverse slat of spoke suspension; The top of described first vertical plate and second vertical plate is connected to the two ends of transverse slat; Described first wheel shaft and second wheel shaft lay respectively at the inboard of first vertical plate and the second vertical plate bottom; Described steamboat has two, is installed on respectively on first wheel shaft and second wheel shaft; Described spoke suspension is placed on the guide rail, and steamboat is positioned at the groove of guide rail both sides.
Preferably, also be provided with block on the described base, the shape of the lower surface of described block and the shape of jack are complementary.
Preferably, described movable threader has 15-32.
Preferred, the material of described guide rail is cast iron.
3, beneficial effect
Adopt technical scheme provided by the invention, compare with existing technology, have following beneficial effect:
(1) the present invention includes guide rail, movable threader and junction plate, guide rail is that cross section is the horizontal slideway of " worker " font, described movable threader has two rollers, the engineering that can be used for stretch-draw varying number steel strand flexibly, the steel strand that can effectively avoid breaking damage the constructor, easy for installation, floor space is little, no environment restriction;
(2) also be provided with block on the base of the present invention, the shape of the lower surface of block and the shape of jack are complementary, and can prevent that movable threader from skidding off guide rail;
(3) material of guide rail of the present invention is cast iron, has guaranteed the spacing rigidity to steel strand.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the cross sectional representation of guide rail;
Fig. 3 is the structural representation of movable threader;
Fig. 4 is the structural representation of spoke suspension.
Among the figure: 1, base; 2, guide rail; 3, movable threader; 4, jack; 5, block; 6, thimble; 7, dowel; 8, spoke suspension; 9, steamboat; 10, junction plate; 11, first vertical plate; 12, transverse slat; 13, second vertical plate; 14, first wheel shaft; 15, second wheel shaft.
The specific embodiment
Describe the present invention below in conjunction with concrete accompanying drawing.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the spacing frock of a kind of pulley type steel strand comprises base 1, also comprises guide rail 2, movable threader 3 and junction plate 10, and junction plate 10 is fixed on an end of base 1, and the other end of base 1 has jack 4; Guide rail 2 is that cross section is the horizontal slideway of " worker " font, and both sides are fluted, and its bottom surface is fixed on the base 1; One end of guide rail 2 is connected with junction plate 10; Movable threader 3 comprises thimble 6, dowel 7, spoke suspension 8, steamboat 9, and dowel 7 upper ends are connected with thimble 6, and the lower end is connected with spoke suspension 8; Spoke suspension 8 is rectangular frame, comprises first vertical plate 11, transverse slat 12, second vertical plate 13, first wheel shaft 14, second wheel shaft 15; Dowel 7 is fixed on the transverse slat 12 of spoke suspension 8; The top of first vertical plate 11 and second vertical plate 13 is connected to the two ends of transverse slat 12; First wheel shaft 14 and second wheel shaft 15 lay respectively at the inboard of first vertical plate 11 and second vertical plate, 13 bottoms; Steamboat 9 has two, is installed on respectively on first wheel shaft 14 and second wheel shaft 15; Spoke suspension 8 is placed on the guide rail 2, and steamboat 9 is positioned at the groove of guide rail 2 both sides.
Also be provided with block 5 on the base 1, the shape of the shape of the lower surface of block 5 and jack 4 is complementary; Movable threader 3 has 15-32; The material of guide rail 2 is cast iron.
During use, quantity according to the steel strand of institute's stretch-draw in the work progress, select the movable threader 3 of equal number, and be installed on successively on the guide rail 2, then every steel strand are passed the thimble 6 on the movable threader 3, the distance of adjustment activity threader 3 is inserted block 5 on the base 1 at last.
Embodiment 1
The spacing frock of a kind of pulley type steel strand comprises base 1, also comprises guide rail 2, movable threader 3 and junction plate 10, and described junction plate 10 is fixed on an end of base 1, and the other end of base 1 has jack 4; Described guide rail 2 is that cross section is the horizontal slideway of " worker " font, and both sides are fluted, and its bottom surface is fixed on the base 1; One end of described guide rail 2 is connected with junction plate 10; Described movable threader 3 comprises thimble 6, dowel 7, spoke suspension 8, steamboat 9; Described dowel 7 upper ends are connected with thimble 6, and the lower end is connected with spoke suspension 8; Described spoke suspension 8 is rectangular frame, comprises first vertical plate 11, transverse slat 12, second vertical plate 13, first wheel shaft 14, second wheel shaft 15; Described dowel 7 is fixed on the transverse slat 12 of spoke suspension 8; The top of described first vertical plate 11 and second vertical plate 13 is connected to the two ends of transverse slat 12; Described first wheel shaft 14 and second wheel shaft 15 lay respectively at the inboard of first vertical plate 11 and second vertical plate, 13 bottoms; Described steamboat 9 has two, is installed on respectively on first wheel shaft 14 and second wheel shaft 15; Described spoke suspension 8 is placed on the guide rail 2, and steamboat 9 is positioned at the groove of guide rail 2 both sides.Also be provided with block 5 on the described base 1, the shape of the shape of the lower surface of described block 5 and jack 4 is complementary.Described movable threader 3 has 23.The material of described guide rail 2 is cast iron.
Embodiment 2
Difference is that described movable threader 3 has 15.
Embodiment 3
Difference is that described movable threader 3 has 32.
Below schematically the present invention and embodiment thereof are described, this description does not have restricted, and shown in the accompanying drawing is one of embodiments of the present invention also, and practical structure is not limited thereto.So, if those of ordinary skill in the art is enlightened by it, under the situation that does 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 (4)
1. spacing frock of pulley type steel strand, comprise base (1), it is characterized in that: also comprise guide rail (2), movable threader (3) and junction plate (10), described junction plate (10) is fixed on an end of base (1), and the other end of base (1) has jack (4); Described guide rail (2) is that cross section is the horizontal slideway of " worker " font, and both sides are fluted, and its bottom surface is fixed on the base (1); One end of described guide rail (2) is connected with junction plate (10); Described movable threader (3) comprises thimble (6), dowel (7), spoke suspension (8), steamboat (9); Described dowel (7) upper end is connected with thimble (6), and the lower end is connected with spoke suspension (8); Described spoke suspension (8) is rectangular frame, comprises first vertical plate (11), transverse slat (12), second vertical plate (13), first wheel shaft (14), second wheel shaft (15); Described dowel (7) is fixed on the transverse slat (12) of spoke suspension (8); The top of described first vertical plate (11) and second vertical plate (13) is connected to the two ends of transverse slat (12); Described first wheel shaft (14) and second wheel shaft (15) lay respectively at the inboard of first vertical plate (11) and second vertical plate (13) bottom; Described steamboat (9) has two, is installed on respectively on first wheel shaft (14) and second wheel shaft (15); Described spoke suspension (8) is placed on the guide rail (2), and steamboat (9) is positioned at the groove of guide rail (2) both sides.
2. the spacing frock of pulley type steel strand according to claim 1, it is characterized in that: also be provided with block (5) on the described base (1), the shape of the shape of the lower surface of described block (5) and jack (4) is complementary.
3. the spacing frock of pulley type steel strand according to claim 1 is characterized in that: described movable threader (3) has 15-32.
4. according to claim 1 or the spacing frock of 3 described pulley type steel strand, it is characterized in that: the material of described guide rail (2) is cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216082.9A CN103255723B (en) | 2013-06-04 | 2013-06-04 | Pulley type steel strand limitation tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216082.9A CN103255723B (en) | 2013-06-04 | 2013-06-04 | Pulley type steel strand limitation tool |
Publications (2)
| Publication Number | Publication Date |
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| CN103255723A true CN103255723A (en) | 2013-08-21 |
| CN103255723B CN103255723B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310216082.9A Expired - Fee Related CN103255723B (en) | 2013-06-04 | 2013-06-04 | Pulley type steel strand limitation tool |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550440Y (en) * | 2002-07-05 | 2003-05-14 | 耿书岭 | Contrapetal prestress rib connector |
| CN201162092Y (en) * | 2008-02-20 | 2008-12-10 | 湖北福星科技股份有限公司 | Steel wire wires cross over-wire apparatus |
| JP4293696B2 (en) * | 1999-12-28 | 2009-07-08 | ショーボンド建設株式会社 | Construction method of composite floor slab bridge |
| CN201671232U (en) * | 2010-05-20 | 2010-12-15 | 柳州市邱姆预应力机械有限公司 | Large-diameter steel strand anchoring device |
| CN102055144A (en) * | 2010-11-10 | 2011-05-11 | 河南省电力公司南阳供电公司 | Method for preventing guy wire from being broken and foundation from being pulled up |
| CN201924604U (en) * | 2011-01-06 | 2011-08-10 | 中铁七局集团有限公司 | Pulling device for prestressed steel strands |
| CN202672034U (en) * | 2012-07-02 | 2013-01-16 | 中交二公局第五工程有限公司 | Cable threading plate of steel strand of stay cable |
| CN203373663U (en) * | 2013-06-04 | 2014-01-01 | 中交二航局第四工程有限公司安徽分公司 | Pulley type steel strand limiting tool |
-
2013
- 2013-06-04 CN CN201310216082.9A patent/CN103255723B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4293696B2 (en) * | 1999-12-28 | 2009-07-08 | ショーボンド建設株式会社 | Construction method of composite floor slab bridge |
| CN2550440Y (en) * | 2002-07-05 | 2003-05-14 | 耿书岭 | Contrapetal prestress rib connector |
| CN201162092Y (en) * | 2008-02-20 | 2008-12-10 | 湖北福星科技股份有限公司 | Steel wire wires cross over-wire apparatus |
| CN201671232U (en) * | 2010-05-20 | 2010-12-15 | 柳州市邱姆预应力机械有限公司 | Large-diameter steel strand anchoring device |
| CN102055144A (en) * | 2010-11-10 | 2011-05-11 | 河南省电力公司南阳供电公司 | Method for preventing guy wire from being broken and foundation from being pulled up |
| CN201924604U (en) * | 2011-01-06 | 2011-08-10 | 中铁七局集团有限公司 | Pulling device for prestressed steel strands |
| CN202672034U (en) * | 2012-07-02 | 2013-01-16 | 中交二公局第五工程有限公司 | Cable threading plate of steel strand of stay cable |
| CN203373663U (en) * | 2013-06-04 | 2014-01-01 | 中交二航局第四工程有限公司安徽分公司 | Pulley type steel strand limiting tool |
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| CN103255723B (en) | 2015-07-01 |
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