CN108797370A - A kind of steel strand wires clamping device on bridge prestress tensioning equipment - Google Patents
A kind of steel strand wires clamping device on bridge prestress tensioning equipment Download PDFInfo
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- CN108797370A CN108797370A CN201810999713.1A CN201810999713A CN108797370A CN 108797370 A CN108797370 A CN 108797370A CN 201810999713 A CN201810999713 A CN 201810999713A CN 108797370 A CN108797370 A CN 108797370A
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- Prior art keywords
- steel strand
- strand wires
- clamping device
- slot
- compact heap
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 78
- 239000010959 steel Substances 0.000 title claims abstract description 78
- 210000000078 claw Anatomy 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides the steel strand wires clamping devices on a kind of bridge prestress tensioning equipment, belong to equipment for bridge construction technical field.This steel strand wires clamping device includes the slot of sliding block and the annular being opened on sliding block lateral surface, the outer of slot has a step surface, this steel strand wires clamping device further includes a gripping block, there is and the corresponding plug of slot and baffle ring corresponding with step surface in gripping block, be connected by a tension spring between baffle ring and step surface；A boss is formed between slot and threading hole, axis is uniformly provided with several slide openings on boss, and a compact heap is slidably connected in slide opening, and there is a protrusion, the inside of compact heap to have the claw in " eight " font in the outside of compact heap；Plug can expression lobes, and claw is made to be resisted against on the steel strand wires in threading hole.The present invention has many advantages, such as that clamping stablizes, is reliable.
Description
Technical field
The invention belongs to equipment for bridge construction technical field, a kind of be related on bridge prestress tensioning equipment steel strand wires folder
Hold device.
Background technology
Prestressed stretch-draw is exactly to apply prestressing force in advance in Bridge Concrete component so that is applied in prestressed stretch-draw component and holds
Compression chord, so that it generates certain deformation, to cope with the suffered load of beam type component itself.
Before Engineering Structure Component bears external load, to tension mould steel strand wires in the block, applies compressive pre-stress, improve structure
The bending resistance and rigidity of part postpone the time that crack occurs, increase the durability of component.From the point of view of mechanical structure, contain
Justice is makes it generate stress in advance, and benefit is can to improve construction rigidity itself, and reduction vibration and flexible deformation are done so can
To be obviously improved the elastic strength of tension module, keep the resistance of script stronger.
In the prior art, independent tensioning is generally carried out by root steel strand wires by jack, work progress is cumbersome, and passes through liquid
Pressure device drives, for the more demanding of construction environment and construction auxiliary equipment.
That is, in entire work progress, during entire prestressed stretch-draw, the equipment such as hydraulic cylinder need in place
Interior continuous operation can not have any mishap and error, otherwise can influence steel strand wires pretightning force, to be caused to bridge construction
It influences.
The reliability of the existing prestress tensioning equipment to steel strand wires is poor, recycling rate of waterused is poor, to find out its cause, one
Aspect is that can not have whole equipment to control more steel strand wires, and the adjusting of stretching force can not be completed by manpower,
On the other hand can not be the fixation because of steel strand wires in the pretightning force for not depending on external other equipment maintenance steel strand wires
It is unreliable, in the case where construction environment is poor, it be easy to cause the defects of getting rusty, is stuck, being difficult to dismount.
Invention content
In view of the above problems existing in the prior art, the purpose of the present invention is to provide a kind of bridge prestress tensioning equipments
On steel strand wires clamping device, the technical problem to be solved by the present invention is to so that steel strand wires is reliably fixed.
Object of the invention can be realized by the following technical scheme：A kind of steel strand wires on bridge prestress tensioning equipment
Clamping device, which is characterized in that this steel strand wires clamping device includes the slot of sliding block and the annular being opened on sliding block lateral surface,
It further includes a gripping block that the outer of the slot, which has a step surface, this steel strand wires clamping device, have in the gripping block with
The corresponding plug of slot and baffle ring corresponding with step surface, are connected between the baffle ring and step surface by a tension spring；It is described to insert
A boss is formed between slot and threading hole, axis is uniformly provided with several slide openings on the boss, is slidably connected in the slide opening
There are a compact heap, the outside of the compact heap that there is a protrusion, the inside of the compact heap to have the claw in " eight " font；Institute
State plug can expression lobes, and claw is made to be resisted against on the steel strand wires in threading hole.
In steel strand wires clamping device on a kind of above-mentioned bridge prestress tensioning equipment, the lateral surface of the gripping block
On be fixedly installed a hollow pull rod, the outer end of the pull rod offers the location hole being in threading hole on same straight line,
The outer end of the pull rod is threaded with an end cap.
The end of steel strand wires on the lateral surface of pull rod, by the compression of end cap, makes steel strand wires by way of bending
End be fixed, keep the fixation of steel strand wires relatively reliable.
When being inserted into steel strand wires, pull rod can be drawn in addition, makes plug far from slot, compact heap is avoided to make the insertion of steel strand wires
At obstruction, when steel strand wires are inserted into appropriate location, releasing lever, under the action of tension spring, inserted block is inserted into slot, makes compression
Steel strand wires are clamped in block.
By being fixed twice to steel strand wires, i.e., end is fixed by end cap, inside line by compact heap into
Row clamping, keeps the clamping of steel strand wires relatively reliable, at the same time, due to steel strand wires tension, gripping block is driven to have to sliding block
Driving for direction movement, makes active force bigger of the plug to compact heap, to make steel strand wires clamping more stablize, that is, steel strand wires
When causing stress and bearing capacity to steel strand wires when by external forces or in work progress, the clamping of steel strand wires can be more next
It is more secured.
In steel strand wires clamping device on a kind of above-mentioned bridge prestress tensioning equipment, the slide opening is in " work " word
Type, the claw are detachably connected with protrusion.
Slide opening is in " I " fonts, it can be ensured that compact heap will not drop out in sliding block, and two components of compact heap are removable
Unload connection, make compact heap installation can be light be mounted on slide opening in.
Wherein, the outer end of claw has the connector of a bar shape, on connector there is threaded hole, raised inner segment to have
Pin, pin are threaded in threaded hole, and connector is slidably connected at the middle part of slide opening, and protrusion can be contracted in slide opening
Outer portion part, claw can be contracted in the inner section of slide opening, and when penetrating steel strand wires, protrusion is overhanging, and claw is contracted to the inside of slide opening
Section, in order to the insertion of steel strand wires, when plug is inserted into, protrusion moves inward, claw synchronizing moving, and is carried out to steel strand wires
Clamping.
Description of the drawings
Fig. 1 is the overall structure diagram of this bridge prestress tensioning equipment.
Fig. 2 is the sectional view of tensioner.
Fig. 3 is the enlarged drawing of part A in Fig. 2.
In figure, 1, pedestal；11, mounting plate；12, pile；21, sleeve；22, sliding block；23, moving block；24, drive disk；25,
Installation step；26, slide bar；27, pilot hole；28, threading hole；31, slot；32, step surface；33, gripping block；34, plug；35,
Baffle ring；36, tension spring；37, boss；38, slide opening；39, compact heap；391, raised；392, claw；41, pull rod；42, location hole；
43, end cap；5, lump of force；61, locking hole；62, locking bolt.
Specific implementation mode
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As depicted in figs. 1 and 2, this prestress tensioning equipment includes that pedestal 1 can be right with several being arranged on pedestal 1
The tensioner that steel strand wires carry out tensioning and prestressing force is adjusted；
Tensioner includes sleeve 21, sliding block 22, moving block 23 and drive disk 24, outer wall and 1 stationary phase of pedestal of sleeve 21
Even, there is 21 inner wall of sleeve internal spline, 22 outer surface of sliding block there is the external splines coordinated with internal spline, 21 inner wall of sleeve also to have
Internal thread, the outer surface of moving block 23 have the external screw thread with screw-internal thread fit, have an installation step 25, peace on drive disk 24
Dress step 25 is plugged in sleeve 21, and drive disk 24 stretches out except sleeve 21, passes through between 21 inner wall of installation step 25 and sleeve
Bearing is connected, and the lateral surface of moving block 23 is horizontally arranged with several slide bars 26, the outside of the medial surface and sliding block 22 of moving block 23
It is connected by plane bearing between face, offers on drive disk 24 and slided with 26 one-to-one pilot hole 27 of each slide bar, slide bar 26
It is dynamic to be connected in corresponding pilot hole 27；
The middle part of sliding block 22 offers a threading hole 28, and the steel being threaded through in plug wire hole can be twisted by being provided on sliding block 22
The steel strand wires clamping device that line is fixed.
By rotating drive disk 24, make moving block 23 under internal thread and externally threaded cooperation, translation, pushes away in sleeve 21
Dynamic or pulling sliding block 22 translates under the action of internal spline and external splines, to enable the sliding block 22 for being fixed with steel strand wires to be drawn
Or unclamp, to which the pretightning force of steel strand wires be adjusted.
This equipment carries out unified fixation, i.e., by pedestal 1 to more by multiple tensioners to the base position of each steel strand wires
A tensioner is fixed, and then individually controls each steel strand wires by each tensioner, can greatly reduce labor intensity and can
Control property.
In this equipment, by way of screw thread rotation, the sliding block 22 to being fixed with steel strand wires is controlled and is adjusted, can
The force strength for pulling steel strand wires is substantially reduced, and laborsaving design again is carried out by larger-diameter drive disk 24, makes drive
The operation that dynamic steel strand wires tense can be completed by manpower, not necessarily use hydraulic equipment or power equipment, in this way with
Come, can greatly improve to the reliability in bridge construction process, avoids in work progress to environmental condition and appointed condition
It relies on, construction accident and construction risk caused by also eliminating the uncontrollability of the external devices such as hydraulic equipment.
As shown in Figures 2 and 3, steel strand wires clamping device includes the slot 31 for the annular being opened on 22 lateral surface of sliding block,
It further includes a gripping block 33 that the outer of slot 31, which has a step surface 32, this steel strand wires clamping device, have in gripping block 33 with
31 corresponding plug 34 of slot and baffle ring 35 corresponding with step surface 32, pass through 36 phase of a tension spring between baffle ring 35 and step surface 32
Even；Form a boss 37 between slot 31 and threading hole 28, axis is uniformly provided with several slide openings 38 on boss 37, in slide opening 38
A compact heap 39 is slidably connected, the outside of compact heap 39 has a protrusion 391, and it is in " eight " font that the inside of compact heap 39, which has,
Claw 392；Plug 34 can expression lobes 391, and claw 392 is made to be resisted against on the steel strand wires in threading hole 28.
A hollow pull rod 41 is fixedly installed on the lateral surface of gripping block 33, the outer end of pull rod 41 offers and threading hole
28 location hole 42 on same straight line, the outer end of pull rod 41 is threaded with an end cap 43.
The end of steel strand wires on the lateral surface of pull rod 41, by the compression of end cap 43, makes steel by way of bending
The end of twisted wire is fixed, and keeps the fixation of steel strand wires relatively reliable.
When being inserted into steel strand wires, pull rod 41 can be drawn in addition, makes plug 34 far from slot 31, avoids compact heap 39 to steel strand wires
Insertion cause to hinder, when steel strand wires are inserted into appropriate location, releasing lever 41, under the action of tension spring 36, inserted block be inserted into
In slot 31, make compact heap 39 that steel strand wires be clamped.
By being fixed twice to steel strand wires, i.e., end is fixed by end cap 43, and inside line passes through compact heap
39 are clamped, and keep the clamping of steel strand wires relatively reliable, at the same time, due to steel strand wires tension, drive gripping block 33 have to
Driving for the direction movement of sliding block 22, makes active force bigger of the plug 34 to compact heap 39, to keep steel strand wires clamping more steady
It is fixed, that is, when steel strand wires cause stress and bearing capacity when by external forces or in work progress to steel strand wires, steel strand wires
Clamping can be more and more secured.
Slide opening 38 is in " I " fonts, and claw 392 is detachably connected with protrusion 391.Slide opening 38 is in " I " fonts, it can be ensured that
Compact heap 39 will not drop out in sliding block 22, and two components of compact heap 39 are detachably connected, and make the installation of compact heap 39 can
Light is mounted in slide opening 38.
Wherein, the outer end of claw 392 has the connector of a bar shape, has threaded hole on connector, protrusion 391 it is interior
There is section pin, pin to be threaded in threaded hole, and connector is slidably connected at the middle part of slide opening 38, and protrusion 391 can
It is contracted in the outer portion part of slide opening 38, claw 392 can be contracted in the inner section of slide opening 38, when penetrating steel strand wires, outside protrusion 391
It stretches, claw 392 is contracted to the inner section of slide opening 38, and in order to the insertion of steel strand wires, when plug 34 is inserted into, protrusion 391 is inwardly
Side is moved, 392 synchronizing moving of claw, and steel strand wires are clamped.
Several lump of forces 5 are circumferentially evenly arranged on the peripheral surface of drive disk 24.Lump of force 5 can be used for extraneous spanner,
Steel pipe etc. makes operation drive disk 24 rotate more laborsaving.
It is circumferentially evenly distributed with several locking holes 61 on the lateral surface of sleeve 21, a locking is threaded on drive disk 24
Bolt 62, locking bolt 62 can be plugged in locking hole 61.After the position of drive disk 24 is adjusted, locking bolt can be passed through
The position of 62 drive disks 24 and sleeve 21 is fixed, to avoid maloperation or relax under the pulling force effect of steel strand wires.
The bottom of pedestal 1 is provided with a mounting plate 11, and several piles 12,11 energy of mounting plate are threaded on mounting plate 11
Enough fixed on the ground by pile 12.Mounting plate 11 is fixed on the ground by pile 12, since steel strand tension continues
Time is longer, each tensioner can be kept relatively reliable by the fixed mode in ground, moreover, by unified fixed mode, no
Stability can be only improved, but also labor intensity can be lowered, for fixing the mode of jack one by one, passes through unification
Fixed mounting plate 11 can be more time saving and energy saving.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (3)
1. the steel strand wires clamping device on a kind of bridge prestress tensioning equipment, which is characterized in that this steel strand wires clamping device packet
The outer of the annular slot (31) for including sliding block (22) and being opened on sliding block (22) lateral surface, the slot (31) has one
Terrace (32), this steel strand wires clamping device further include a gripping block (33), and it is right with slot (31) to have on the gripping block (33)
The plug (34) and baffle ring corresponding with step surface (32) (35) answered are drawn between the baffle ring (35) and step surface (32) by one
Spring (36) is connected；A boss (37) is formed between the slot (31) and threading hole (28), axis is uniform on the boss (37)
Several slide openings (38) are offered, a compact heap (39), the outside of the compact heap (39) are slidably connected in the slide opening (38)
With one raised (391), the inside of the compact heap (39) has the claw (392) in " eight " font；Plug (34) energy
Enough expression lobes (391), and claw (392) is made to be resisted against on the steel strand wires in threading hole (28).
2. the steel strand wires clamping device on a kind of bridge prestress tensioning equipment according to claim 1, which is characterized in that institute
It states and is fixedly installed a hollow pull rod (41) on the lateral surface of gripping block (33), the outer end of the pull rod (41) offers and wears
String holes (28) is in the location hole (42) on same straight line, and the outer end of the pull rod (41) is threaded with an end cap (43).
3. the steel strand wires clamping device on a kind of bridge prestress tensioning equipment according to claim 1 or claim 2, feature exist
In the slide opening (38) is in " I " fonts, and the claw (392) is detachably connected with raised (391).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810999713.1A CN108797370A (en) | 2018-08-30 | 2018-08-30 | A kind of steel strand wires clamping device on bridge prestress tensioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810999713.1A CN108797370A (en) | 2018-08-30 | 2018-08-30 | A kind of steel strand wires clamping device on bridge prestress tensioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108797370A true CN108797370A (en) | 2018-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810999713.1A Pending CN108797370A (en) | 2018-08-30 | 2018-08-30 | A kind of steel strand wires clamping device on bridge prestress tensioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108797370A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110656582A (en) * | 2019-09-23 | 2020-01-07 | 武汉理工大学 | T roof beam steel strand wires wear to restraint device |
| CN114960736A (en) * | 2022-07-07 | 2022-08-30 | 东北电力大学 | Post-tensioning method prestressed pile for power transmission line foundation engineering and construction method |
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| CN203393623U (en) * | 2013-06-14 | 2014-01-15 | 中交二航局第四工程有限公司安徽分公司 | Novel steel strand tensioning device |
| CN104831634A (en) * | 2015-05-18 | 2015-08-12 | 湖南路桥建设集团有限责任公司 | Construction method for box type bridge vertical prestressed steel strand tension |
| CN204753388U (en) * | 2015-02-25 | 2015-11-11 | 林同棪国际工程咨询（中国）有限公司 | Bridge prestressing force steel strand stretching ware of preventing kick -backing |
| KR101659411B1 (en) * | 2016-03-09 | 2016-09-30 | 대영스틸산업주식회사 | Anchoring structure of the steel wire using the grip-wedge and method thereof, and method for replacing the steel wire |
| CN206828967U (en) * | 2017-03-30 | 2018-01-02 | 中铁六局集团有限公司 | The longitudinal prestressing tensioning equipment of railway engineering continuous beam |
| CN207193776U (en) * | 2017-09-15 | 2018-04-06 | 浙江工业职业技术学院 | A kind of bridge prestress tensioning equipment |
| CN208857709U (en) * | 2018-08-30 | 2019-05-14 | 湖北科技学院 | A kind of steel strand wires clamping device on bridge prestress tensioning equipment |
-
2018
- 2018-08-30 CN CN201810999713.1A patent/CN108797370A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203393623U (en) * | 2013-06-14 | 2014-01-15 | 中交二航局第四工程有限公司安徽分公司 | Novel steel strand tensioning device |
| CN204753388U (en) * | 2015-02-25 | 2015-11-11 | 林同棪国际工程咨询（中国）有限公司 | Bridge prestressing force steel strand stretching ware of preventing kick -backing |
| CN104831634A (en) * | 2015-05-18 | 2015-08-12 | 湖南路桥建设集团有限责任公司 | Construction method for box type bridge vertical prestressed steel strand tension |
| KR101659411B1 (en) * | 2016-03-09 | 2016-09-30 | 대영스틸산업주식회사 | Anchoring structure of the steel wire using the grip-wedge and method thereof, and method for replacing the steel wire |
| CN206828967U (en) * | 2017-03-30 | 2018-01-02 | 中铁六局集团有限公司 | The longitudinal prestressing tensioning equipment of railway engineering continuous beam |
| CN207193776U (en) * | 2017-09-15 | 2018-04-06 | 浙江工业职业技术学院 | A kind of bridge prestress tensioning equipment |
| CN208857709U (en) * | 2018-08-30 | 2019-05-14 | 湖北科技学院 | A kind of steel strand wires clamping device on bridge prestress tensioning equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110656582A (en) * | 2019-09-23 | 2020-01-07 | 武汉理工大学 | T roof beam steel strand wires wear to restraint device |
| CN114960736A (en) * | 2022-07-07 | 2022-08-30 | 东北电力大学 | Post-tensioning method prestressed pile for power transmission line foundation engineering and construction method |
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