CN203669383U - Anchor retrograding device for expanding and drawing bunch steel strands of prestressed girder board - Google Patents
Anchor retrograding device for expanding and drawing bunch steel strands of prestressed girder board Download PDFInfo
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- CN203669383U CN203669383U CN201320721095.7U CN201320721095U CN203669383U CN 203669383 U CN203669383 U CN 203669383U CN 201320721095 U CN201320721095 U CN 201320721095U CN 203669383 U CN203669383 U CN 203669383U
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- beam slab
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 89
- 239000010959 steel Substances 0.000 title claims abstract description 89
- 238000009434 installation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 210000003205 muscle Anatomy 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
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- 238000010276 construction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The utility model provides an anchor retrograding device for expanding and drawing bunch steel strands of a prestressed girder board. The anchor retrograding device comprises a limiting board (2), a steel cylinder (3), a hydraulic jack (4) and a work anchorage device (5) arranged sequentially. The anchor retrograding device is characterized in that the limiting board (2) is arranged on a girder board anchorage device (1) in a sleeved mode; the steel cylinder (3) is of a cylindrical structure, the two ends of the steel cylinder are identical in caliber, a groove is formed in the side face of a cylinder body of the steel cylinder, the ratio of the length of the groove and the length of the steel cylinder is larger than or equal to 3:4, and the width of the groove is larger than or equal to 8 cm; the size of the inner circle of the hydraulic jack (4) is matched with the outer diameter of the steel cylinder (3), the matched jack is selected according to the number of girder board prestressed ribs and the expanding and drawing acting force, and the steel strands are prevented from being twisted and intersecting in the jack; the work anchorage device (5) is matched with the hydraulic jack (4). The anchor retrograding device has the advantages that the steel cylinder is reasonable in design, the structure is simple, manufacture is convenient, operation is safe, the anchor retrograding time is greatly shortened, the work efficiency is improved, the engineering cost is reduced, and the expanding and drawing quality of the steel strands is guaranteed.
Description
Technical field
The utility model relates to a kind of steel strand and moves back anchor device, specifically, is a kind ofly to retreat prestressing force beam slab stretch-draw group that anchor does over again and restraint the application that steel strand move back anchor device and restraint steel strand and move back anchor prestressing force beam slab stretch-draw group for beam slab stretch-draw is defective.
Background technology
Fig. 1 be known move back anchor device move back anchor stretch-draw setting position schematic diagram.Conventionally, group's bundle steel strand tension is the necessary operation of current prestressed bridge beam slab, it is equally also the important step that beam slab is made, move back anchor quality, direct making quality and the cost that affects beam slab of efficiency quality, quality, efficiency, the cost control that how to guarantee this link is the problem that this project is wanted important solution.Steel strand tension moves back anchor, must configure and be specifically designed to the windlass that moves back that moves back anchor, moves back windlass and in operation, must configure equally lifting device, and accessory is many, equipment is installed complicated, operation sequence complexity, hydraulic system fault is high, operation sequence complexity, and therefore effect of field application is undesirable.
Chinese patent 201010223138.X discloses prestressed tensioning anchor group single-hole anchor-disassembling device on November 9th, 2011, Fig. 2 is known anchor restorer body cylindrical structure schematic diagram, and Fig. 3 is the use view of cylinder in Fig. 2.As shown in the figure, described anchor restorer body is cylindrical structure, be provided with intermediate plate along axis and exit hole and steel strand perforation, in the middle wall of anchor restorer body, have intermediate plate and spill hole, anchor restorer body exits by intermediate plate on the end face in hole along being circumferentially evenly equipped with six back-up blocks, between adjacent two back-up blocks, forms clip groove.Although adopt single hole move back anchor, its complex structure, make trouble, complex operation, efficiency of construction is lower, cost is higher, danger is larger.
Equally, Chinese patent 201210182051.1 disclosed whole bundle anchor restorer and has adopted the anchor method that moves back of this whole bundle anchor restorer on October 3rd, 2012, although be to have adopted entirety to move back the method for anchor, its accessory is many, equipment installation is complicated, large, the same efficiency of construction of construction cost is lower.
Therefore known prestressing force beam slab stretch-draw group restraints steel strand and moves back anchor device and exist above-mentioned all inconvenience and problem.
Summary of the invention
The purpose of this utility model, is to propose a kind of prestressing force beam slab stretch-draw group safe and reliable, simple in structure and restraints steel strand and move back anchor device and using method thereof.
For achieving the above object, technical solution of the present utility model is:
A kind of prestressing force beam slab stretch-draw group restraints steel strand and moves back anchor device, comprises that limiting plate, steel cylinder, hydraulic jack and work ground tackle set gradually, and is characterized in that:
Described limiting plate is placed on beam slab ground tackle;
Described steel cylinder is cylindrical structure, and steel cylinder two ends bore is consistent, and steel cylinder stack shell side is provided with groove, groove length: drum length >=3:4, recess width >=8cm;
Described jack inner ring size matches with steel cylinder external diameter, according to girder plate prestress muscle radical and stretch-draw active force difference, selects supporting jack, prevents steel strand twisting in jack, intersection;
Described work ground tackle and jack match.
Prestressing force beam slab stretch-draw group of the present utility model restraints steel strand and moves back anchor device and can also be further achieved by the following technical measures.
Aforesaid prestressing force beam slab stretch-draw group restraints steel strand and moves back anchor device, and the material of wherein said steel cylinder is Q235 steel.
Aforesaid prestressing force beam slab stretch-draw group restraints steel strand and moves back anchor device, the thickness >=1cm of wherein said steel cylinder.
Aforesaid prestressing force beam slab stretch-draw group restraints steel strand and moves back anchor device, the axis of wherein said steel cylinder cylindrical structure becomes after installation to be restrainted steel strand with prestressing force beam slab stretch-draw group and moves back the hydraulic jack of anchor device and work ground tackle point-blank, and perpendicular to beam slab stretch-draw face.
A kind of prestressing force beam slab stretch-draw group restraints steel strand and moves back anchor device and restraint steel strand prestressing force beam slab stretch-draw group and move back the application in anchor.
Adopt after technique scheme, prestressing force beam slab stretch-draw group of the present utility model restraints steel strand and moves back anchor device and restraint prestressing force beam slab stretch-draw group the application that steel strand move back in anchor and have the following advantages:
1, steel cylinder is reasonable in design, simple in structure, easy to make, handling safety;
2, shortening is moved back the anchor time, is increased work efficiency greatly;
3, reduce engineering cost, guarantee steel strand tension quality.
Accompanying drawing explanation
Fig. 1 be known move back anchor device move back anchor tensioning equipment position view;
Fig. 2 is known anchor restorer body cylindrical structure schematic diagram;
Fig. 3 is the use view of cylinder in Fig. 2;
Fig. 4 is the steel tube structure schematic diagram that the utility model is implemented;
Fig. 5 is the front view of the steel cylinder of the utility model enforcement;
Fig. 6 is the position view that moves back anchor tensioning equipment that moves back anchor device that the utility model is implemented.
In figure: 1 beam slab ground tackle, 2 limiting plates, 3 steel cylinders, 4 hydraulic jack, 5 work ground tackles, 6 precast beams, 7 grooves.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof, the utility model is illustrated further.
Now refer to Fig. 4 and Fig. 5, Fig. 4 is that prestressing force beam slab stretch-draw group of the present utility model restraints steel strand and moves back the steel tube structure schematic diagram that anchor device is implemented, and Fig. 5 is the front view of steel cylinder that the utility model is implemented.As shown in the figure, described limiting plate 2 is placed on beam slab ground tackle 1;
Described steel cylinder 3 is cylindrical structure, and steel cylinder two ends bore is consistent, and steel cylinder 3 stack shell sides are provided with groove, groove length 15cm, and drum length 20cm, recess width is 8cm; The thickness of described steel cylinder 3 is 1cm; The material of described steel cylinder 3 is Q235 steel.
Described jack 4 inner ring sizes match with steel cylinder 3 external diameters; Described work ground tackle 5 matches with jack 4.
Prestressing force beam slab stretch-draw group of the present utility model restraints steel strand and moves back anchor device and restraint steel strand prestressing force beam slab stretch-draw group and move back the application in anchor.
Fig. 6 is the position view that moves back anchor tensioning equipment that moves back anchor device that the utility model is implemented.
Use in the present embodiment the prestressing force beam slab stretch-draw group of embodiment 1 to restraint steel strand and move back anchor device, each member specification and technical requirements are as follows:
(1), limiting plate: because beam slab kind is many, beam slab ground tackle is not of uniform size to be caused, and therefore must support the use with beam slab ground tackle size, and notice that each hole is corresponding one by one with work anchor hole, and check whether there is not damaged anchor ring outer ring, affect the cooperation of limiting plate.
(2), steel cylinder: steel cylinder two ends bore is consistent, material Q235 steel, steel cylinder thickness 1cm, length 20cm, steel cylinder external diameter and jack inner ring size support the use, vertical stretch-draw face when installation.
(3), jack: according to girder plate prestress muscle radical and stretch-draw active force difference, select supporting jack, note preventing steel strand twisting in jack, intersection.
(4), work ground tackle: same and jack supports the use.
Prestressing force beam slab stretch-draw group of the present utility model restraints steel strand, and to move back the use step of anchor device as follows:
(1) first by staff, limiting plate 2 is arranged on beam slab ground tackle, and notices that each hole steel strand are corresponding one by one with work anchor hole, and check the cooperation that whether affects limiting plate;
(2) steel cylinder 3 is installed again, and is noted vertical stretch-draw face, steel cylinder groove upwards, is convenient to take out first sheet in beam slab;
(3) then jack 4 is installed, and is noted preventing steel strand twisting in jack, intersection;
(4) last installation work ground tackle 5, notices that equally each hole steel strand are corresponding one by one with work anchor hole, and notices that work clip sheet is evenly urgent; All device installations, after guaranteeing installation, all kinds of devices point-blank, and perpendicular to beam slab stretch-draw face, stretch-draw active force is controlled at 0.1-0.2P(beam slab design control stress for prestressing), then take out beam slab inner clamp piece by steel cylinder, the last slow oil return of jack, completes beam slab stretch-draw group and restraints steel strand and move back anchor.
The utlity model has substantive distinguishing features and significant technological progress, prestressing force beam slab stretch-draw group of the present utility model restraints steel strand and moves back that the steel cylinder that anchor device adopts is reasonable in design, simple in structure, easy to make, handling safety.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (4)
1. prestressing force beam slab stretch-draw group restraints steel strand and moves back an anchor device, comprises that limiting plate (2), steel cylinder (3), hydraulic jack (4) and work ground tackle (5) set gradually, and is characterized in that:
Described limiting plate (2) is placed on beam slab ground tackle (1);
Described steel cylinder (3) is cylindrical structure, and steel cylinder two ends bore is consistent, and steel cylinder stack shell side is provided with groove, groove length: drum length >=3:4, recess width >=8cm;
Described jack (4) inner ring size matches with steel cylinder (3) external diameter, according to girder plate prestress muscle radical and stretch-draw active force difference, selects supporting jack, prevents steel strand twisting in jack, intersection;
Described work ground tackle (5) matches with jack (4).
2. prestressing force beam slab stretch-draw group as claimed in claim 1 restraints steel strand and moves back anchor device, it is characterized in that, the material of described steel cylinder (3) is Q235 steel.
3. prestressing force beam slab stretch-draw group as claimed in claim 1 restraints steel strand and moves back anchor device, it is characterized in that the thickness >=1cm of described steel cylinder (3).
4. prestressing force beam slab stretch-draw group as claimed in claim 1 restraints steel strand and moves back anchor device, it is characterized in that, the axis of described steel cylinder (3) cylindrical structure becomes after installation to be restrainted steel strand with prestressing force beam slab stretch-draw group and moves back the hydraulic jack (4) of anchor device and work ground tackle (5) point-blank, and perpendicular to beam slab stretch-draw face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320721095.7U CN203669383U (en) | 2013-11-15 | 2013-11-15 | Anchor retrograding device for expanding and drawing bunch steel strands of prestressed girder board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320721095.7U CN203669383U (en) | 2013-11-15 | 2013-11-15 | Anchor retrograding device for expanding and drawing bunch steel strands of prestressed girder board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203669383U true CN203669383U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320721095.7U Expired - Lifetime CN203669383U (en) | 2013-11-15 | 2013-11-15 | Anchor retrograding device for expanding and drawing bunch steel strands of prestressed girder board |
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| Country | Link |
|---|---|
| CN (1) | CN203669383U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631835A (en) * | 2013-11-15 | 2015-05-20 | 五冶集团上海有限公司 | Prestressed beam and slab stretching-drawing group-bundle steel strand anchor receding device and application thereof |
| CN115450435A (en) * | 2022-08-10 | 2022-12-09 | 中交一公局集团有限公司 | Single equal-prestress tensioning device |
-
2013
- 2013-11-15 CN CN201320721095.7U patent/CN203669383U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631835A (en) * | 2013-11-15 | 2015-05-20 | 五冶集团上海有限公司 | Prestressed beam and slab stretching-drawing group-bundle steel strand anchor receding device and application thereof |
| CN115450435A (en) * | 2022-08-10 | 2022-12-09 | 中交一公局集团有限公司 | Single equal-prestress tensioning device |
| CN115450435B (en) * | 2022-08-10 | 2023-10-03 | 中交一公局集团有限公司 | Single equal prestress tensioning equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |
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| CX01 | Expiry of patent term |