CN1031737A - A kind of new lasso protection technology - Google Patents
A kind of new lasso protection technology Download PDFInfo
- Publication number
- CN1031737A CN1031737A CN 88102768 CN88102768A CN1031737A CN 1031737 A CN1031737 A CN 1031737A CN 88102768 CN88102768 CN 88102768 CN 88102768 A CN88102768 A CN 88102768A CN 1031737 A CN1031737 A CN 1031737A
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- Prior art keywords
- drag
- line
- twisting
- protection technology
- lasso protection
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Abstract
A kind of new lasso protection technology.Belong to coating wiry.By being arranged in the drag-line that regular hexagon or the orthohexagonal steel wire of unfilled corner are formed,, by plastic extruder the plastics of molten condition directly are coated in the drag-line surface again through the slight twisting of twisting machinery.The saving of labor economizes material and saves time, and operation is simple, makes easily, and very big practical value is arranged.
Description
The invention belongs to coating wiry.
Lasso protection has metal sleeve mud jacking technology and polyethylene sleeve pipe mud jacking technology.Metal sleeve mud jacking technology is owing to reeve, lift, metal solder etc. are too complicated and seldom adopt, and polyethylene sleeve pipe mud jacking technology is though operation is simple, barrier propterty is preferably also arranged, but because parallel wire unit is wrapped up in cement mortar outward, so appearance and size is big, thickness of pipe wall, its polyethylene welding and the work of drag-line poling all bother very much, because the lasso protection cover is heavy, greatly reduce the conversion elastic modelling quantity of drag-line.The present invention be exactly a kind of from heavy and light, material economize, make simple, protection effect is good, long service life, transportation and installation is all extremely convenient, the lasso protection technology of economic benefit highly significant.
Main points of the present invention are, wire blanking, straightening, arranging is shaped forms drag-line, and by the in addition twisting of twisting machinery, the drag-line that twisting is shaped again by extruder, directly is coated in the drag-line surface with the plastics of molten condition, thereby reaches the purpose of protective rope.
Accompanying drawing one is for being arranged in the drag-line that orthohexagonal steel wire is formed.Accompanying drawing two is for being arranged in the drag-line that the orthohexagonal steel wire of unfilled corner is formed.1 is plastic protective cover among the figure, and 2 is steel wire among the figure.
Drag-line generally is made up of tens of even up to a hundred steel wires, and steel wire arranging is become regular hexagon, or respectively takes away some steel wires form the unfilled corner hexagon on orthohexagonal six angles. The pitch size of twisting is determining the tightness degree of drag-line. Pitch is more little, and twist angle is more big, and the drag-line cross section is more tight, and the shortening of steel wire is also more big; Otherwise pitch is more big, and twist angle is more little, and steel wire shortens also little, and the drag-line cross section is more not tight. Requirement to twisting is, the cross section is tight, and is not loose during carrying, and twist angle is take 4～7 degree as best. The rotation of twisting machinery and movement will be complementary with selected pitch. When drag-line external diameter during greater than 45 millimeters, steel wire arranging becomes the unfilled corner hexagon for well. The protective materials plastics, the vinyon take carbon black and antiager as additive is as best. This material can satisfy ageing-resistant performance, the requirement of many-sided performances such as ESCR ability and corrosion resistance. Drag-line is drawn by hitching machinery, and during by extruder, just the plastics with molten condition directly are coated in the drag-line surface, forms protective layer, is called noose, so claim that also this technology is hot extrude noose technology, drag-line is by the speed of extruder and the speeds match of extruding.
The present invention has following remarkable advantage:
Floor manufacture, coil easily.
Drag-line is made in the fabricating yard, transports the building site lifting then to, through the drag-line of slight twisting, it is all convenient than other technology to be easy to coil, to produce, to transport and to install, and has eliminated work high above the ground, can realize batch production, standardized production, thereby more can ensure the quality of products and reduce cost, increase the benefit.
The personnel selection less, the efficient height.
Blanking, compile rope, extruding the per pass operation need only 4～5 people.One 180 half length weighs 5.3 tons drag-line, and a work team can make.
3. simple equipments, convenient in carrying.
Little, the small investment of equipment, convenient in carrying, suitable building site produces.Mainly be small-sized extruder, strander, extrude hauling machine and hoist engine etc.The maximum is heavy less than 3 tons.
4. material-saving saving of labor.
As long as steel wire and two kinds of materials of plastics, required plastics only are about 1/3rd of polyethylene sleeve pipe mud jacking technology.
5. energy resource consumption is few.
6. there is not early stage corrosion.
Blanking, compile rope to extruding only work team of need, after plastics are extruded coating, just completely cut off water and air, drag-line promptly obtains good protection, thereby can zinc-plated copper wire, and this has reduced very big investment again.
7. noose stress is little, long service life.
8. conversion spring modulus height.
From the above mentioned, calculate with the cross section shown in the accompanying drawing, the Cable stayed bridge about 200 meters, only one of lasso protection Master Cost can be saved about 300,000 yuan, if consider the stress blanking again, compile expenses such as rope, poling, mud jacking, lifting and transportation, at least also can save about 400,000 yuan; If add the reduction of erection time, the drag-line elastic modelling quantity improves the factors of bringing to structure such as benefit, the economic benefit on the macroscopic view, appreciable especially.
The present invention can be used for Cable stayed bridge, also can be used for suspension bridge, bowstring arch bridge, and the external stress system bridge that gives, non-adhesive prestress rope, old bridge are reinforced and are transformed architectural overhung construction, aqueduct and dam structure etc.Very wide purposes is arranged, can obtain very large economy benefit.
Claims (4)
1, a kind of new lasso protection technology, comprise blanking, straightening, volume rope and be coated with, it is characterized in that said drag-line is made up of the steel wire that arrange to be shaped, then with drag-line by the slight twisting of twisting machinery, again the drag-line of twisting directly is coated in the drag-line surface by plastic extruder with the plastics of molten condition.
2, the lasso protection technology said as claim 1 is characterized in that the steel wire of forming drag-line is arranged in regular hexagon or unfilled corner regular hexagon.
3,, it is characterized in that the twisting angle is the best with 4～7 degree as claim 1 or 2 said lasso protection technologies.
4, the lasso protection technology said as claim 1 is characterized in that said plastics, and the vinyon of making additive with carbon black and antiager is the best.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102768 CN1007631B (en) | 1988-05-07 | 1988-05-07 | Process for protecting rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102768 CN1007631B (en) | 1988-05-07 | 1988-05-07 | Process for protecting rope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031737A true CN1031737A (en) | 1989-03-15 |
| CN1007631B CN1007631B (en) | 1990-04-18 |
Family
ID=4832300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88102768 Expired CN1007631B (en) | 1988-05-07 | 1988-05-07 | Process for protecting rope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007631B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436104C (en) * | 2002-03-07 | 2008-11-26 | 宇部日东化成株式会社 | Method and apparatus for producing rod shape article with synthetic resin |
| CN104762840A (en) * | 2015-04-10 | 2015-07-08 | 招商局重庆交通科研设计院有限公司 | Filling integrated type anti-corrosion parallel wire stayed cable body for bridge and manufacturing process for filling integrated type anti-corrosion parallel |
-
1988
- 1988-05-07 CN CN 88102768 patent/CN1007631B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436104C (en) * | 2002-03-07 | 2008-11-26 | 宇部日东化成株式会社 | Method and apparatus for producing rod shape article with synthetic resin |
| CN104762840A (en) * | 2015-04-10 | 2015-07-08 | 招商局重庆交通科研设计院有限公司 | Filling integrated type anti-corrosion parallel wire stayed cable body for bridge and manufacturing process for filling integrated type anti-corrosion parallel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1007631B (en) | 1990-04-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |