CN104847122A - 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
CN104847122A
CN104847122A CN201510232846.2A CN201510232846A CN104847122A CN 104847122 A CN104847122 A CN 104847122A CN 201510232846 A CN201510232846 A CN 201510232846A CN 104847122 A CN104847122 A CN 104847122A
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China
Prior art keywords
rod
steel pull
tension rod
reaction frame
fork ear
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CN201510232846.2A
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Chinese (zh)
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CN104847122B (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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Publication of CN104847122A publication Critical patent/CN104847122A/en
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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 stretch-draw construction method thereof pitching ear formula drag-line or steel pull-rod for stretch-draw
Technical field
The present invention relates to a kind of prestressed structure construction equipment and method thereof, particularly a kind of for stretch-draw fork ear formula drag-line or the device assembly of steel pull-rod and the construction method for pitching ear formula drag-line or the stretch-draw of steel pull-rod thereof.
Background technology
In prestressed structure, have partial prestressing cable body or steel pull-rod to be designed to the form of structure of two end yoke ears, its length adjustment is realized by the adjustment barrel on an end yoke ear; Because anchor type adopts fork ear to connect, conventional adapter sleeve cannot be adopted to be connected with anchor head and to carry out prestressing force adjustment, shoulder pole form can only be adopted to carry out stretch-draw adjustment prestressing force; But the adjustment prestressing force frock due to shoulder pole form needs drag-line or steel pull-rod just must consider installation site when designing, and requires higher to the Design and manufacture of drag-line cable body or steel pull-rod .
Notification number is: CN101845894A, and denomination of invention is: the application for a patent for invention of " the U-shaped tool set-up device of prestressed steel structure tensioning construction and construction method " discloses one " the U-shaped tool set-up device of prestressed steel structure tensioning construction and construction method.It is uneven by cross box anchorage length to there are left and right two secondary U-shaped force bearing rings in this U-shaped frock, makes the left and right stressed unbalance stress in stretching process of two U-shaped force bearing rings and deflects, being unfavorable for the applying of stress; Nothing constraint between U-shaped force bearing ring on the other hand, in stretching process, U-shaped force bearing ring is overall along the skew of bearing pin axial direction, even from the slippage of otic placode exterior arc surface, is difficult to realize cable tensios control; 3rd, U-shaped force bearing ring is that line face contacts with drag-line or steel pull-rod arc surface, is unfavorable for that local stress controls, and is difficult to realize when relating to large-tonnage stretch-draw.
Summary of the invention
Main purpose of the present invention is, there is provided a kind of for stretch-draw fork ear formula drag-line or the device assembly of steel pull-rod and the construction method for pitching ear formula drag-line or the stretch-draw of steel pull-rod thereof, to solve the problems referred to above and existing patented technology above shortcomings part that prior art exists.
The technical scheme solved the problem is: a kind of device assembly pitching ear formula drag-line or steel pull-rod for stretch-draw, described fork ear formula drag-line or steel pull-rod comprise cable body or steel pull-rod, are positioned at the fork ear at cable body or steel pull-rod two ends and the adjustment barrel on an end yoke ear, it is characterized in that, this device assembly comprises: reaction frame, tension rod, shoulder pole girder and jack;
Described reaction frame is similar " U " type structure, is divided into two panels; Reaction frame Inner arc size comparatively pitches that ear upper surface size is slightly large, and the opening part of " U " type structure is designed to step-like, which is provided with bolt hole and for the tension rod half slot I by tension rod;
Described shoulder pole girder is for splitting two halves formula structure, and centre is used for by drag-line or steel pull-rod, and both sides are for installing tension rod half slot II, the bolt hole of tension rod;
Under using state, two panels reaction frame is arranged on the fork ear both sides of fork ear formula drag-line or steel pull-rod respectively, the stepped locations of opening part is just drawn close, by bolt and junction plate composition entirety, two tension rod half slots I merge into a through hole, and tension rod is by pull bar half slot I and be anchored at reaction frame step place; Two halves formula shoulder pole girder is arranged on the extending end of fork ear formula drag-line or steel pull-rod, is bolted; Tension rod, through shoulder pole girder and reaction frame, carries out anchoring in reaction frame one end by hold-down nut, and the other end installs jack and backing plate also passes through tensioning nut anchoring.
Described a kind of further technical scheme of pitching the device assembly of ear formula drag-line or steel pull-rod for stretch-draw is: described reaction frame Inner arc size comparatively pitches the large 3-5mm of ear upper surface size.
Another relevant technical scheme is: a kind of stretch-draw construction method pitching ear formula drag-line or steel pull-rod, it is that a kind of device assembly for stretch-draw fork ear formula drag-line or steel pull-rod utilizing the present invention above-mentioned has the fork ear formula drag-line of fork ear or steel pull-rod to implement the method for stretch-draw to two ends, and it comprises the following steps:
A, installation reaction frame: the both sides two halves of reaction frame 1 being arranged on respectively the fork ear of fork ear formula drag-line or fork ear formula steel pull-rod, reaction frame Inner arc contacts with fork ear exterior arc surface; Then be fixed on the fork ear of fork ear formula drag-line or steel pull-rod by two panels reaction frame by bolt and junction plate, 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, be buckled on cable body or steel pull-rod by more than half circular groove of shoulder pole girder, fixed by shoulder pole girder by bolt, two tension rod half slots II synthesize the manhole that tension rod can be made to pass through;
C, installation tension rod: the two tension rod half slots I tension rod through hole that tension rod is first formed through shoulder pole girder two tension rod half slot II being passed again reaction frame merge the tension rod through hole of formation, then install hold-down nut anchoring at reaction frame place;
D, installation jack: be inserted in bottom tension rod by jack, jack base and shoulder pole girder soffit are adjacent to, and installation jack pad and tensioning nut are fixed jack and completed installation;
E, stretch-draw, tune rope: by control oil pump, make jack pair tension rod carry out stretch-draw; When stretching force reaches Suo Lishi, adjustment barrel place occurs lax, adopts Chain wrench knob to regulate adjustment barrel length, puts open or tighten up cable body;
F, complete tune rope: repeat step e, by repeat stretch-draw with regulate adjustment barrel length, until complete tune rope.
Owing to taking said structure, a kind of of the present invention has following beneficial effect compared to existing technology for stretch-draw fork ear formula drag-line or the device assembly of steel pull-rod and the construction method for pitching ear formula drag-line or the stretch-draw of steel pull-rod thereof:
1. because reaction frame is designed to class " U " type structure, can be directly installed on fork ear, therefore cable body design processing does not need additionally to consider shoulder pole girder anchorage point, designs more convenient, more compact structure.
2. because reaction frame is designed by class " U " the type left and right two panels symmetrical structure of bolton, be therefore convenient to processing, make, easy accessibility, safety are high, highly versatile.
3. because tensioning tooling assembly be all arranged on drag-line cable body or steel pull-rod, provide stretching force to complete stretch-draw by jack, no longer need by foreign object external force, adjust rope by angle and spacial influence little.
4. comparing existing disclosed technology notification number is: the application for a patent for invention technology of CN101845894A, and structure simple occupy-place volume is little, be more suitable for when rope there is no shoulder pole installation site or installation site is less enough powerful counter-force cannot be provided to support time situation:
The present invention utilizes the inner headed face in face-face to contact with periphery, and form the contact of pin-hole, mechanical model is clear and definite, be more conducive to computational analysis and manufacture, and due to plane-plane contact, more powerful stretching force can be provided, meet the stretch-draw force request of large-tonnage drag-line or steel pull-rod; Meanwhile, the U-shaped panel of two panels laterally (with otic placode normal direction) Constrained bolt, this bolt can limit the deflection of U-shaped plate, move outward, thus avoids the stressed slippage of stretching process, safe and reliable, is beneficial to stretch-draw and implements.
Below in conjunction with drawings and Examples to the present invention a kind of for stretch-draw fork ear formula drag-line or steel pull-rod device assembly and be described further for the technical characteristic of the construction method of pitching ear formula drag-line or the stretch-draw of steel pull-rod.
Accompanying drawing explanation
Fig. 1: a kind of of the embodiment of the present invention one pitches the structure of the device assembly of ear formula drag-line or steel pull-rod and install and use state reference map for stretch-draw;
Fig. 2-1: a kind of structural representation (under two panels assembled state) pitching the reaction frame of the device assembly of ear formula drag-line or steel pull-rod for stretch-draw of the present invention;
The single chip architecture schematic diagram of reaction frame shown in Fig. 2-2: Fig. 2-1;
Fig. 3-1: a kind of structural representation (under two panels assembled state) pitching the shoulder pole girder of the device assembly of ear formula drag-line or steel pull-rod for stretch-draw of the present invention;
The single chip architecture schematic diagram of shoulder pole girder shown in Fig. 3-2: Fig. 3-1.
In figure:
1-reaction frame, 11-bolt, 12-junction plate, 13-reaction frame Inner arc, 14-bolt hole, 15-tension rod half slot I;
2-adjustment barrel; 3-tension rod;
4-shoulder pole girder, 41-bolt, 42-bolt hole, 43-tension rod half slot II, the more than half circular groove of 44-;
5-jack, 6-backing plate, 7-cable body or steel pull-rod, 8-pitches ear, 9-extending; 10-tensioning nut.
Detailed description of the invention
Embodiment one:
For stretch-draw fork ear formula drag-line or the device assembly of steel pull-rod, described fork ear formula drag-line or fork ear formula steel pull-rod comprise cable body or steel pull-rod 7, be positioned at the fork ear 8 at cable body or steel pull-rod 7 two ends and the adjustment barrel 2 on an end yoke ear and extending 9;
The described device assembly for stretch-draw fork ear formula drag-line or steel pull-rod comprises: reaction frame 1, tension rod 3, shoulder pole girder 4 and jack 5(are see Fig. 1);
Described reaction frame 1 is similar " U " type structure, is divided into two panels; Reaction frame Inner arc size comparatively pitches the large 3-5mm of ear upper surface size, and the opening part of " U " type structure is designed to step-like, which is provided with bolt hole 14 and for tension rod half slot I 15(by tension rod see Fig. 2-1, Fig. 2-2);
Described shoulder pole girder 4 is for splitting two halves formula structure, and centre is for the more than half circular groove 44 by drag-line or steel pull-rod, and there are tension rod half slot II 43 for installing tension rod, bolt hole 42(in both sides see Fig. 3-1, Fig. 3-2);
Under using state, two panels reaction frame is arranged on the fork ear both sides of drag-line or steel pull-rod respectively, the stepped locations of opening part is just drawn close, entirety is formed by bolt 11 and junction plate 12, two tension rod half slots I merge into a through hole, and tension rod is by pull bar half slot I and be anchored at reaction frame step place; Two halves formula shoulder pole girder is arranged on extending 9 end of drag-line or steel pull-rod, is fixed by bolt 41; Tension rod 3, through shoulder pole girder 4 and reaction frame 1, carries out anchoring in reaction frame one end by hold-down nut, and the other end installs jack 5 and backing plate also passes through tensioning nut 10 anchoring (see Fig. 1).
Embodiment two:
A stretch-draw construction method for two end yoke ear formula drag-lines or steel pull-rod, it comprises the following steps:
A, installation reaction frame: the both sides two halves of reaction frame 1 being arranged on respectively the fork ear 8 of fork ear formula drag-line or steel pull-rod, reaction frame Inner arc 13 contacts with fork ear 8 exterior arc surface; Then be fixed on the fork ear of fork ear formula drag-line or steel pull-rod by two panels reaction frame 1 by bolt 11 and junction plate 12, two tension rod half slots I merge into a through hole;
B, installation shoulder pole girder: shoulder pole girder 4 is installed at cable body or steel pull-rod 7 extending 9 position; During installation, be buckled on cable body or steel pull-rod by more than half circular groove 44 of shoulder pole girder, fixed by shoulder pole girder 4 by bolt 41, two tension rod half slots II 43 synthesize the manhole that tension rod 3 can be made to pass through;
C, installation tension rod: the two tension rod half slots I tension rod through hole that tension rod 3 is first formed through shoulder pole girder 4 liang of tension rod half slots II being passed again reaction frame 1 merge the tension rod through hole of formation, then install hold-down nut anchoring at reaction frame 1 place;
D, installation jack: be inserted in bottom tension rod 3 by jack 5, jack 5 base and shoulder pole girder 4 soffit are adjacent to, and installation jack pad 6 and tensioning nut 10 are fixed jack 5 and completed installation;
E, stretch-draw, tune rope: by control oil pump, make jack 5 pairs of tension rods 3 carry out stretch-draw; When stretching force reaches Suo Lishi, adjustment barrel 2 place occurs lax, adopts Chain wrench knob to regulate adjustment barrel 2 length, puts open or tighten up cable body or steel pull-rod;
F, complete tune rope: repeat E, stretch-draw, tune rope step, by repeat stretch-draw with regulate adjustment barrel length, until complete tune rope.

Claims (3)

1. pitch the device assembly of ear formula drag-line or steel pull-rod for stretch-draw for one kind, described fork ear formula drag-line or steel pull-rod comprise cable body or steel pull-rod (7), are positioned at the fork ear (8) at cable body or steel pull-rod (7) two ends and the adjustment barrel (2) on an end yoke ear, it is characterized in that, this device assembly comprises: reaction frame (1), tension rod (3), shoulder pole girder (4) and jack (5);
Described reaction frame (1) is similar " U " type structure, is divided into two panels; Reaction frame Inner arc size comparatively pitches ear upper surface size slightly greatly, and the opening part of " U " type structure is designed to step-like, which is provided with bolt hole (14) and the tension rod half slot I (15) for passing through tension rod;
Described shoulder pole girder (4) is for splitting two halves formula structure, and centre is for the more than half circular groove (44) by drag-line or steel pull-rod, and there are tension rod half slot II (43), bolt hole (42) for installing tension rod in both sides;
Under using state, two panels reaction frame is arranged on the fork ear both sides of fork ear formula drag-line or steel pull-rod respectively, the stepped locations of opening part is just drawn close, by bolt (11) and junction plate (12) composition entirety, two tension rod half slots I merge into a through hole, and tension rod is by pull bar half slot I and be anchored at reaction frame step place; Two halves formula shoulder pole girder is arranged on extending (9) end of fork ear formula drag-line or steel pull-rod, is fixed by bolt (41); Tension rod (3), through shoulder pole girder (4) and reaction frame (1), carries out anchoring in reaction frame one end by hold-down nut, and the other end installs jack (5) and backing plate also passes through tensioning nut (10) anchoring.
2. a kind of device assembly pitching ear formula drag-line or steel pull-rod for stretch-draw according to claim 1, it is characterized in that, described reaction frame Inner arc size comparatively pitches the large 3-5mm of ear upper surface size.
3. pitch the stretch-draw construction method of ear formula drag-line or steel pull-rod for one kind, it is characterized in that, it utilizes a kind of device assembly for stretch-draw fork ear formula drag-line or steel pull-rod described in claim 1 to have the fork ear formula drag-line of fork ear or steel pull-rod to implement the method for stretch-draw to two ends, and it comprises the following steps:
A, installation reaction frame: the both sides two halves of reaction frame 1 being arranged on respectively the fork ear (8) of fork ear formula drag-line or fork ear formula steel pull-rod, reaction frame Inner arc (13) contacts with fork ear (8) exterior arc surface; Then be fixed on by two panels reaction frame (1) by bolt (11) and junction plate (12) 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 (7) extending (9) position; During installation, be buckled on cable body or steel pull-rod by more than half circular groove (44) of shoulder pole girder, fixed by shoulder pole girder (4) by bolt (41), two tension rod half slots II (43) synthesize the manhole that tension rod (3) can be made to pass through;
C, installation tension rod: the two tension rod half slots I tension rod through hole that tension rod (3) is first formed through shoulder pole girder (4) two tension rod half slot II being passed again reaction frame (1) merge the tension rod through hole of formation, then install hold-down nut anchoring at reaction frame (1) place;
D, installation jack: be inserted in from tension rod (3) bottom by jack (5), jack (5) base and shoulder pole girder (4) soffit are adjacent to, install jack pad (6) and the fixing jack (5) of tensioning nut (10) completes installation;
E, stretch-draw, tune rope: by control oil pump, make jack (5) carry out stretch-draw to tension rod (3); When stretching force reaches Suo Lishi, adjustment barrel (2) place occurs lax, adopts Chain wrench knob to regulate adjustment barrel (2) length, puts open or tighten up cable body;
F, complete tune rope: repeat step e, by repeat stretch-draw with regulate adjustment barrel length, until complete tune 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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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105239509A (en) * 2015-11-06 2016-01-13 柳州欧维姆工程有限公司 Tensioner for parallel steel strand stay cables and construction method thereof
CN107574442A (en) * 2017-10-13 2018-01-12 大连科迈尔防腐科技有限公司 A kind of vertical tensioning fixing device of composite rope

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070101489A (en) * 2006-04-11 2007-10-17 프리씨네 Device for fixing a structural cable to a construction element
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070101489A (en) * 2006-04-11 2007-10-17 프리씨네 Device for fixing a structural cable to a construction element
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105239509A (en) * 2015-11-06 2016-01-13 柳州欧维姆工程有限公司 Tensioner for parallel steel strand stay cables and construction method thereof
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
CN107574442A (en) * 2017-10-13 2018-01-12 大连科迈尔防腐科技有限公司 A kind of vertical tensioning fixing device of composite rope
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

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