CN104847122B - Device assembly for tensioning fork ear type stay rope or steel pull rod and tensioning construction method of device assembly - Google Patents

Device assembly for tensioning fork ear type stay rope or steel pull rod and tensioning construction method of device assembly Download PDF

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Publication number
CN104847122B
CN104847122B CN201510232846.2A CN201510232846A CN104847122B CN 104847122 B CN104847122 B CN 104847122B CN 201510232846 A CN201510232846 A CN 201510232846A CN 104847122 B CN104847122 B CN 104847122B
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rod
tensioning
steel pull
reaction frame
line
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CN104847122A (en
Inventor
韦福堂
莫德荣
张国强
沈理
熊佳雯
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LIUZHOU OVM ENGINEERING Co Ltd
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LIUZHOU OVM ENGINEERING Co Ltd
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Abstract

The invention provides a device assembly for tensioning a fork ear type stay rope or a steel pull rod. The device assembly comprises a counter-force rack, a tensioning rod, a carrying pole beam and a jack; the counter-force rack is of a similar U-shaped structure and divided into two pieces; the opening of the U-shaped structure is designed into a step shape, and a bolt holes and a tensioning rod semicircular groove I to allow the tensioning rod to pass through are formed in the step; the carrying pole beam is of a split two-half structure, and the stay rope or the steel pull rod is capable of passing through the middle of the split two-half structure, and tensioning rod semicircular grooves II for mounting the tensioning rod are formed on the two sides of the split two-half structure; when the device assembly is applied to tensioning construction, the two pieces of the counter-force rack are mounted on the two sides of the fork ear of the fork ear type stay rope or the steel pull rod and are integrated by use of a bolt and a connecting plate; the two-half carrying pole beam is mounted on the extension cylinder end of the fork ear type stay rope or the steel pull rod and fixed by use of a bolt; the tensioning rod is put through the carrying pole beam and the counter-force rack, and anchored by use of a fixing nut at one end of the counter-force rack; the jack and a base plate are mounted on the other end of the tensioning rod and the other end of the tensioning rod is anchored by use of a tensioning nut; the device assembly is good in safety and high in universality in tensioning construction.

Description

A kind of device assembly and its stretching construction that ear formula drag-line or steel pull-rod are pitched for tensioning Method
Technical field
The present invention relates to a kind of prestressed structure constructing device and its method, particularly a kind of to pitch ear formula drag-line for tensioning Or the device assembly and its construction method for pitching ear formula drag-line or steel pull-rod tensioning of steel pull-rod.
Background technology
In prestressed structure, there are partial prestressing cable body or steel pull-rod to be designed as the version of two end yoke ears, its length Degree is adjusted to be realized by the adjustment barrel on an end yoke ear;Because anchor type is using fork ear connection, it is impossible to using routine Adapter sleeve is connected with anchor head carries out prestressing force adjustment, can only carry out tensioning adjustment prestressing force using shoulder pole form;But due to shoulder pole The adjustment prestressing force frock of form needs drag-line or steel pull-rod just to must take into installation site in design, to drag-line cable body or steel The design of pull-rod and manufacture requirements are higher.
Notification number is:CN101845894A, it is entitled:《The U-shaped fitting device of prestressed steel structure tensioning construction and Construction method》Application for a patent for invention disclose a kind of " the U-shaped fitting device of prestressed steel structure tensioning construction and construction party Method.U-shaped frock presence two secondary U-shaped force bearing rings of left and right are uneven by cross box anchorage length, receive two U-shaped force bearing rings of left and right Power in stretching process unbalance stress and deflect, be unfavorable for the applying of stress;On the other hand without about between U-shaped force bearing ring Beam, U-shaped force bearing ring is overall along the skew of bearing pin axial direction in stretching process, or even slips from otic placode exterior arc surface, it is difficult to real Existing cable tensios control;3rd, U-shaped force bearing ring is contacted with drag-line or steel pull-rod arc surface for line face, is unfavorable for local stress control, is related to And be difficult to when large-tonnage tensioning.
The content of the invention
Present invention is primarily intended to, there is provided it is a kind of to pitch the device assembly of ear formula drag-line or steel pull-rod for tensioning and its be used for Fork ear formula drag-line or the construction method of steel pull-rod tensioning, to solve the problems referred to above and existing patented technology of prior art presence Above shortcomings part.
The technical scheme for solving the above problems is:A kind of device assembly that ear formula drag-line or steel pull-rod are pitched for tensioning, institute Stating fork ear formula drag-line or steel pull-rod includes cable body or steel pull-rod, the fork ear positioned at cable body or steel pull-rod two ends and near an end yoke Adjustment barrel on ear, it is characterised in that the device assembly includes:Reaction frame, tension rod, shoulder pole girder and jack;
The reaction frame is similar " U " type structure, is divided into two panels;Reaction frame Inner arc size relatively pitches ear upper surface size slightly Greatly, stepped is designed at the opening of " U " type structure, bolt hole is which is provided with and for by the tension rod half slot of tension rod Ⅰ;
The shoulder pole girder is split two halves formula structure, and centre is for by drag-line or steel pull-rod, both sides to be used to install tensioning The tension rod half slot II, bolt hole of bar;
Under use state, two panels reaction frame is separately mounted to pitch the fork ear both sides of ear formula drag-line or steel pull-rod, at opening Stepped locations are just drawn close, and overall by bolt and connecting plate composition, two tension rod half slots I merge into a through hole, tensioning Bar is by pull bar half slot I and is anchored at reaction frame step;Two halves formula shoulder pole girder is arranged on fork ear formula drag-line or steel pull-rod Extending end, is bolted;Tension rod carries out anchor in reaction frame one end through shoulder pole girder and reaction frame by fixing nut Gu, the other end is installed jack and backing plate and is anchored by tensioning nut.
A kind of further technical scheme of device assembly that ear formula drag-line or steel pull-rod are pitched for tensioning is:It is described anti- Power frame Inner arc size 3-5mm big compared with fork ear upper surface size.
Related another technical scheme is:The stretch-draw construction method of a kind of fork ear formula drag-line or steel pull-rod, it is using this A kind of invention above-mentioned device assembly for pitching ear formula drag-line or steel pull-rod for tensioning two ends are had the fork ear formula drag-line of fork ear or The method that steel pull-rod implements tensioning, it is comprised the following steps:
A, installation reaction frame:The fork ear that the two halves of reaction frame 1 are separately mounted to pitch ear formula drag-line or fork ear formula steel pull-rod Both sides, reaction frame Inner arc with fork ear exterior arc surface contact;Then two panels reaction frame is fixed on by bolt and connecting plate On the fork ear of fork ear formula drag-line or steel pull-rod, two tension rod half slots I merge into a through hole;
B, installation shoulder pole girder:Shoulder pole girder is installed in cable body extending position;During installation, more than half circular groove of shoulder pole girder is buckled in On cable body or steel pull-rod, shoulder pole girder is fixed by bolt, the synthesis of two tension rod half slot II can make the circle that tension rod passes through Through hole;
C, installation tension rod:Tension rod is initially passed through into the tensioning rod through-hole that the tension rod half slot II of shoulder pole girder two constitutes to wear again The two tension rod half slot I for crossing reaction frame merges the tensioning rod through-hole for constituting, and fixing nut anchoring is then installed at reaction frame;
D, installation jack:Jack is inserted in from tension rod bottom, jack base is adjacent to shoulder pole girder lower surface, is pacified Dress jack pad and tensioning nut fix jack and complete to install;
E, tensioning, tune rope:By control oil pump, jack pair tension rod is set to carry out tensioning;When stretching force reaches Suo Lishi, Occur relaxing at adjustment barrel, adjustment barrel length is adjusted using Chain wrench knob, cable body is carried out putting and is opened or is tightened up;
F, complete adjust rope:Repeat step E, by repeat stretch-draw and regulation adjustment barrel length, until completing to adjust rope.
Due to taking said structure, the present invention it is a kind of for tensioning pitch ear formula drag-line or steel pull-rod device assembly and its Construction method for pitching ear formula drag-line or steel pull-rod tensioning has the advantages that compared to existing technology:
1., because reaction frame is designed to class " U " type structure, can be directly mounted on fork ear, therefore cable body Design and Machining is not required to Additionally to consider shoulder pole girder anchorage point, design is more convenient, more compact structure.
2. because reaction frame is designed to class " U " type being fastened by bolts or so two panels symmetrical structure, therefore it is easy to add Work, making, easy accessibility, safe, highly versatile.
3. because tensioning tooling component is all on drag-line cable body or steel pull-rod, by jack offer stretching force Complete tensioning, it is no longer necessary to by foreign object external force, adjust rope little by angle and spacial influence.
4. comparing existing disclosed technology notification number is:The application for a patent for invention technology of CN101845894A, simple structure Occupy-place small volume, is more suitable for when rope does not have shoulder pole installation site or the less counter-force powerful enough of cannot providing of installation site Situation when holding:
Inner headed face and periphery contact using surface-to-surface of the invention, forms the contact of pin-hole, and mechanical model is clear and definite, more conducively Calculate analysis and manufacture, and due to plane-plane contact, more powerful stretching force can be provided, meet large-tonnage drag-line or steel draws The tensioning force request of rod;Meanwhile, the U-shaped panel of two panels is horizontal(With otic placode normal direction)Constrained bolt, the bolt can be limited U-shaped plate deflection, outer shifting are made, it is safe and reliable so as to avoid stretching process stress from slipping, implement beneficial to tensioning.
With reference to the accompanying drawings and examples to a kind of device group that ear formula drag-line or steel pull-rod are pitched for tensioning of the present invention Part and its technical characteristic for pitching the construction method of ear formula drag-line or steel pull-rod tensioning are described further.
Description of the drawings
Fig. 1:A kind of structure of the device assembly that ear formula drag-line or steel pull-rod are pitched for tensioning of the embodiment of the present invention one and It installs and uses state reference map;
Fig. 2-1:A kind of structure of the reaction frame of the device assembly that ear formula drag-line or steel pull-rod are pitched for tensioning of the present invention is shown It is intended to(Under two panels assembled state);
Fig. 2-2:The single chip architecture schematic diagram of reaction frame shown in Fig. 2-1;
Fig. 3-1:A kind of structure of the shoulder pole girder of the device assembly that ear formula drag-line or steel pull-rod are pitched for tensioning of the present invention is shown It is intended to(Under two panels assembled state);
Fig. 3-2:The single chip architecture schematic diagram of shoulder pole girder shown in Fig. 3-1.
In figure:
1- reaction frames, 11- bolts, 12- connecting plates, 13- reaction frame Inner arcs, 14- bolts hole, 15- tension rod half slots Ⅰ;
2- adjustment barrels;3- tension rods;
4- shoulder pole girders, 41- bolts, 42- bolts hole, the more than half circular groove of 43- tension rods half slot II, 44-;
5- jack, 6- backing plates, 7- cable bodies or steel pull-rod, 8- fork ears, 9- extendings;10- tensioning nuts.
Specific embodiment
Embodiment one:
A kind of device assembly that ear formula drag-line or steel pull-rod are pitched for tensioning, the fork ear formula drag-line or fork ear formula steel pull-rod Including cable body or steel pull-rod 7, the fork ear 8 positioned at cable body or the two ends of steel pull-rod 7 and the adjustment barrel 2 on an end yoke ear and prolong Long cylinder 9;
The device assembly for pitching ear formula drag-line or steel pull-rod for tensioning includes:Reaction frame 1, tension rod 3, shoulder pole girder 4 With jack 5(Referring to Fig. 1);
The reaction frame 1 is similar " U " type structure, is divided into two panels;Reaction frame Inner arc size relatively pitches ear upper surface size Big 3-5mm, designs stepped at the opening of " U " type structure, which is provided with bolt hole 14 and for by the tensioning of tension rod Bar half slot I 15(Referring to Fig. 2-1, Fig. 2-2);
The shoulder pole girder 4 is split two halves formula structure, and centre is the more than half circular groove 44 for passing through drag-line or steel pull-rod, two While there is tension rod half slot II 43, the bolt hole 42 for installing tension rod(Referring to Fig. 3-1, Fig. 3-2);
Under use state, two panels reaction frame is separately mounted to the fork ear both sides of drag-line or steel pull-rod, step site at opening Put and just draw close, entirety is constituted by bolt 11 and connecting plate 12, two tension rod half slots I merge into a through hole, tension rod By pull bar half slot I and it is anchored at reaction frame step;Two halves formula shoulder pole girder is arranged on the extending 9 of drag-line or steel pull-rod End, is fixed by bolt 41;Tension rod 3 carries out anchor in reaction frame one end through shoulder pole girder 4 and reaction frame 1 by fixing nut Gu, the other end is installed jack 5 and backing plate and is anchored by tensioning nut 10(Referring to Fig. 1).
Embodiment two:
The stretch-draw construction method of a kind of two end yokes ear formula drag-line or steel pull-rod, it is comprised the following steps:
A, installation reaction frame:The two halves of reaction frame 1 are separately mounted to pitch the two of the fork ear 8 of ear formula drag-line or steel pull-rod Side, reaction frame Inner arc 13 is contacted with the fork exterior arc surface of ear 8;Then two panels reaction frame 1 is consolidated by bolt 11 and connecting plate 12 It is scheduled on the fork ear of fork ear formula drag-line or steel pull-rod, two tension rod half slots I merge into a through hole,;
B, installation shoulder pole girder:Shoulder pole girder 4 is installed in cable body or the position of 7 extending of steel pull-rod 9;During installation, by shoulder pole girder More than half circular groove 44 is buckled on cable body or steel pull-rod, is fixed shoulder pole girder 4 by bolt 41, the synthesis energy of two tension rod half slot II 43 The manhole for passing through tension rod 3;
C, installation tension rod:Tension rod 3 is initially passed through into tensioning rod through-hole that 4 liang of tension rod half slots II of shoulder pole girder constitute again Two tension rod half slot I through reaction frame 1 merges the tensioning rod through-hole of composition, and fixing nut is then installed at reaction frame 1 Anchoring;
D, installation jack:Jack 5 is inserted in from the bottom of tension rod 3, the base of jack 5 is pasted with the lower surface of shoulder pole girder 4 Tightly, jack pad 6 is installed and tensioning nut 10 fixes jack 5 and completes to install;
E, tensioning, tune rope:By control oil pump, jack 5 is set to carry out tensioning to tension rod 3;When stretching force reaches Suo Li When, occur lax at adjustment barrel 2, the length of adjustment barrel 2 is adjusted using Chain wrench knob, cable body or steel pull-rod are carried out putting or Tighten up;
F, complete adjust rope:Repeat E, tensioning, adjust rope step, by repeat stretch-draw and regulation adjustment barrel length, until completing Adjust rope.

Claims (3)

1. a kind of device assembly that ear formula drag-line or steel pull-rod are pitched for tensioning, the fork ear formula drag-line or steel pull-rod include cable body Or steel pull-rod(7), positioned at cable body or steel pull-rod(7)The fork ear at two ends(8)And the adjustment barrel on an end yoke ear(2), its It is characterised by, the device assembly includes:Reaction frame(1), tension rod(3), shoulder pole girder(4)And jack(5);
The reaction frame(1)To be similar to " U " type structure, it is divided into two panels;Reaction frame Inner arc size relatively pitches ear upper surface size slightly Greatly, stepped is designed at the opening of " U " type structure, bolt hole (14) is which is provided with and for by the tension rod of tension rod half Circular groove I(15);
The shoulder pole girder(4)For split two halves formula structure, centre is for by more than half circular groove of drag-line or steel pull-rod(44), two While there is the tension rod half slot II for installing tension rod(43), bolt hole(42);
Under use state, two panels reaction frame is separately mounted to pitch the fork ear both sides of ear formula drag-line or steel pull-rod, the step at opening Position is just drawn close, by bolt(11)And connecting plate(12)Composition is overall, and two tension rod half slots I merge into a through hole, Tension rod is by pull bar half slot I and is anchored at reaction frame step;Two halves formula shoulder pole girder is arranged on fork ear formula drag-line or steel draws The extending of rod(9)End, by bolt(41)It is fixed;Tension rod(3)Through shoulder pole girder(4)And reaction frame(1), in reaction frame one End is anchored by fixing nut, and the other end installs jack(5)With backing plate and by tensioning nut(10)Anchoring.
2. a kind of device assembly that ear formula drag-line or steel pull-rod are pitched for tensioning according to claim 1, it is characterised in that Reaction frame Inner arc size 3-5mm big compared with fork ear upper surface size.
3. it is a kind of fork ear formula drag-line or steel pull-rod stretch-draw construction method, it is characterised in that it is using described in claim 1 A kind of device assembly for pitching ear formula drag-line or steel pull-rod for tensioning has the fork ear formula drag-line or steel pull-rod enforcement for pitching ear to two ends The method of tensioning, it is comprised the following steps:
A, installation reaction frame:The fork ear that the two halves of reaction frame 1 are separately mounted to pitch ear formula drag-line or fork ear formula steel pull-rod(8)'s Both sides, reaction frame Inner arc(13)With fork ear(8)Exterior arc surface is contacted;Then bolt is passed through(11)And connecting plate(12)By two panels Reaction frame(1)It is fixed on the fork ear of fork ear formula drag-line or steel pull-rod, two tension rod half slots I merge into a through hole;
B, installation shoulder pole girder:In cable body(7)Extending(9)Position is installed by shoulder pole girder(4);During installation, by the large semicircle of shoulder pole girder Groove(44)It is buckled on cable body or steel pull-rod, by bolt(41)By shoulder pole girder(4)It is fixed, two tension rod half slots II(43)Synthesis Tension rod can be made(3)The manhole for passing through;
C, installation tension rod:By tension rod(3)Initially pass through shoulder pole girder(4)The tensioning rod through-hole that two tension rod half slot II is constituted is again Through reaction frame(1)Two tension rod half slot I merge constitute tensioning rod through-hole, then in reaction frame(1)Install and fix in place Nut is anchored;
D, installation jack:By jack(5)From tension rod(3)Bottom is inserted in, jack(5)Base and shoulder pole girder(4)Following table Face is adjacent to, and installs jack pad(6)And tensioning nut(10)Fixed jack(5)Complete to install;
E, tensioning, tune rope:By control oil pump, jack is made(5)To tension rod(3)Carry out tensioning;When stretching force reaches Suo Li When, adjustment barrel(2)Relaxing occurs in place, and using Chain wrench knob adjustment barrel is adjusted(2)Length, cable body is carried out putting or received Tightly;
F, complete adjust rope:Repeat step E, by repeat stretch-draw and regulation adjustment barrel length, until completing to adjust rope.
CN201510232846.2A 2015-05-08 2015-05-08 Device assembly for tensioning fork ear type stay rope or steel pull rod and tensioning construction method of device assembly Active CN104847122B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105239509B (en) * 2015-11-06 2017-03-22 柳州欧维姆工程有限公司 Tensioner for parallel steel strand stay cables and construction method thereof
CN107574442B (en) * 2017-10-13 2019-04-26 大连科迈尔海洋工程技术有限公司 A kind of fixed device of the vertical tensioning of composite rope

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101845894A (en) * 2010-06-23 2010-09-29 北京市建筑工程研究院 U-shaped tool device for prestressed steel structure tensioning construction and construction method
CN201627377U (en) * 2009-12-31 2010-11-10 中铁六局集团有限公司 Continuous operating rig tensioning tooling
CN202882447U (en) * 2012-10-31 2013-04-17 北京银泰建预应力工程有限公司 Device used for inhaul cable tensioning construction in prestressed steel structure
CN204781997U (en) * 2015-05-08 2015-11-18 柳州欧维姆工程有限公司 A device subassembly that is used for stretch -draw fork ear formula cable or steel pull -rod

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101125369B1 (en) * 2006-04-11 2012-03-27 프리씨네 Device for fixing a structural cable to a construction element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201627377U (en) * 2009-12-31 2010-11-10 中铁六局集团有限公司 Continuous operating rig tensioning tooling
CN101845894A (en) * 2010-06-23 2010-09-29 北京市建筑工程研究院 U-shaped tool device for prestressed steel structure tensioning construction and construction method
CN202882447U (en) * 2012-10-31 2013-04-17 北京银泰建预应力工程有限公司 Device used for inhaul cable tensioning construction in prestressed steel structure
CN204781997U (en) * 2015-05-08 2015-11-18 柳州欧维姆工程有限公司 A device subassembly that is used for stretch -draw fork ear formula cable or steel pull -rod

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