CN203741718U - Protective device for steel wire stay cable - Google Patents
Protective device for steel wire stay cable Download PDFInfo
- Publication number
- CN203741718U CN203741718U CN201420090555.5U CN201420090555U CN203741718U CN 203741718 U CN203741718 U CN 203741718U CN 201420090555 U CN201420090555 U CN 201420090555U CN 203741718 U CN203741718 U CN 203741718U
- Authority
- CN
- China
- Prior art keywords
- wire rope
- steel wire
- stay cable
- zinc powder
- hollow structure
- Prior art date
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a protective device for a steel wire stay cable. The protective device comprises a steel wire rope, wherein an outer layer of the steel wire rope is wrapped by a polyester wrapping tape, an outer layer of the polyester wrapping tape is wrapped by a polyethylene sheath of a hollow structure, and indifferent gas is injected into the hollow structure. Zinc liquid after being cooled is directly sprayed to the surface of the steel wire rope to play a role in physical covering, so that the steel wire rope is isolated from corrosive media such as water and air; the temperature in the spraying process is low, so that the steel wire rope does not deform, and the internal mechanical property is basically not affected; because the electrochemical performance of zinc powder is active, and the electrode potential is lower than that of the steel wire rope, in a corrosion cell, the zinc powder serves as the negative electrode, the steel wire rope serves as the positive electrode, the zinc powder is changed to be ions by losing electrons and enters an dielectric medium solution to be corroded, and the free electrons flow to the steel wire rope, so that the steel wire rope is polarized to be protected. The device is safe and reliable and greatly improves durability and safety of the stay cable, the construction is convenient to carry out, and the technological means is easy and convenient to implement.
Description
Technical field
The utility model relates to bridge protection field, relates in particular to a kind of steel wire stay cable protector.
Background technology
Suspension cable is the peculiar member of cable stayed bridge, and it plays a part the dead load of girder and mobile load to pass to ground by Sarasota.Because suspension cable is generally arranged in beam external body, and for a long time under high-stress state, its sectional dimension is again little, thus very responsive to corrosiveness, even if there is its intensity of slight corrosion, also have larger loss.At present in process of production, steel wire stay cable generally adopts hot-dip galvanizing technique to process, before processing, need elder generation through overpickling, phosphating process, Steel Wire Surface has the residue of acid, alkali lye, has left the hidden danger of corrosion, make zinc coat easily produce and come off, and in galvanizing by dipping process, because bath temperature is high, easily make steel wire distortion, produce internal stress, affect its mechanical property.In use, steel wire stay cable is also often because aging, the cracking of outsourcing hot extruded polyethylene sheath, and occur corrosion in various degree having had a strong impact on durability and the safety of cable stayed bridge bridge span structure, the form of having to change rope guarantees the normal use of bridge.And by the fabricating cost of changing expense that rope produces and be far longer than suspension cable, also will have a strong impact on traffic, cause bad social influence simultaneously.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, provides a kind of technique simple, cheap steel wire stay cable protector, improves durability and the safety of suspension cable.
The utility model is achieved through the following technical solutions:
A steel wire stay cable protector, comprises wire rope 1, and the skin of described wire rope 1 is enclosed with polyester band 3, and the skin of described polyester band 3 is enclosed with pe sheath 4, and described pe sheath 4 is hollow structure 5, the interior inert gas injecting of this hollow structure 5.
Described wire rope 1 is comprised of many steel wires, is filled with zinc powder 2 between every steel wire in the gap forming.
The cross sectional shape of described wire rope 1 is polygon.
The preparation method of above-mentioned steel wire stay cable protector, comprises the steps:
(1) wire rope 1 adopts after derusting by sandblasting, will be sprayed directly into wire rope 1 surface through the cooled zinc liquid of air upper, makes wire rope 1 surface form topping;
(2) zinc powder 2 is filled in the gap forming between every steel wire of wire rope 1;
(3) by the periphery parcel polyester band 3 of wire rope 1;
(4) skin at polyester band 3 puts pe sheath 4;
(5) finally inert gas is injected in the hollow structure 5 of pe sheath 4, form layer of inert.
The utility model, with respect to prior art, has following advantage and effect:
After zinc liquid is cooling by air, be sprayed directly into wire rope 1 surface, play physics covering effect, the corrosive mediums such as wire rope 1 and water and air are kept apart, the temperature during due to spraying is very low, wire rope 1 can not be out of shape, and its inner its mechanical properties is unaffected.
Because the chemical property of zinc powder is more active; electrode potential is lower than wire rope 1; in this corrosion cell; zinc powder is negative pole; wire rope 1 is anodal, and zinc powder loses electronics, becomes ion and enters in dielectric solution and be corroded; its free electron flows to wire rope 1, wire rope 1 is polarized and be protected.
Polyester band 3 is wrapped in wire rope 1 outside, in order to the fixing and wire rope 1 of protection after spray zinc and Zinc powder process processing.
Because 4 pairs of wire rope 1 of pe sheath play a part isolated moisture and etchant gas, simultaneously can also shielding of ultraviolet, prevent mechanical injuries.
Inert gas injects in the hollow structure 5 of pe sheath 4, forms layer of inert, thereby further improves the decay resistance of wire rope 1.
The technology of the present invention means are simple and easy to do, safe and reliable, easy construction, the durability and the safety that have greatly improved suspension cable.
Accompanying drawing explanation
Fig. 1 is the utility model cross section structure schematic diagram.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in Figure 1.A kind of steel wire stay cable protector of the utility model, comprise wire rope 1, the skin of described wire rope 1 is enclosed with polyester band 3, and the skin of described polyester band 3 is enclosed with pe sheath 4, described pe sheath 4 is hollow structure 5, the interior inert gas injecting of this hollow structure 5.This hollow structure is sealed hollow structure.
Described wire rope 1 is comprised of many steel wires, is filled with zinc powder 2 between every steel wire in the gap forming.
The cross sectional shape of described wire rope 1 is polygon.
The preparation method of above-mentioned steel wire stay cable protector, comprises the steps:
(1) wire rope 1 adopts after derusting by sandblasting, will be sprayed directly into wire rope 1 surface through the cooled zinc liquid of air upper, makes wire rope 1 surface form topping;
(2) zinc powder 2 is filled in the gap forming between every steel wire of wire rope 1;
(3) by the periphery parcel polyester band 3 of wire rope 1;
(4) skin at polyester band 3 puts pe sheath 4;
(5) finally inert gas is injected in the hollow structure 5 of pe sheath 4, form layer of inert.
Described polyester band 3 can adopt fiber reinforcement polyester band.
Described derusting by sandblasting, adopts blasting craft, for removing the rusty stain on wire rope 1 surface.
After zinc liquid is cooling by air, be sprayed directly into wire rope 1 surface, play physics covering effect, the corrosive mediums such as wire rope 1 and water and air are kept apart, the temperature during due to spraying is very low, wire rope 1 can not be out of shape, and its inner its mechanical properties is unaffected.
Because the chemical property of zinc powder is more active; electrode potential is lower than wire rope 1; in this corrosion cell; zinc powder is negative pole; wire rope 1 is anodal, and zinc powder loses electronics, becomes ion and enters in dielectric solution and be corroded; its free electron flows to wire rope 1, wire rope 1 is polarized and be protected.
Polyester band 3 is wrapped in wire rope 1 outside, in order to the fixing and wire rope 1 of protection after spray zinc and Zinc powder process processing.
Because 4 pairs of wire rope 1 of pe sheath play a part isolated moisture and etchant gas, simultaneously can also shielding of ultraviolet, prevent mechanical injuries.
Inert gas injects in the hollow structure 5 of pe sheath 4, forms layer of inert, thereby further improves the decay resistance of wire rope 1.
As mentioned above, just can realize preferably the utility model.
Embodiment of the present utility model is not restricted to the described embodiments; other are any does not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (3)
1. a steel wire stay cable protector, comprise wire rope, it is characterized in that: the skin of described wire rope is enclosed with polyester band, the skin of described polyester band is enclosed with pe sheath, described pe sheath is hollow structure, inert gas injecting in this hollow structure.
2. steel wire stay cable protector according to claim 1, is characterized in that: described wire rope is comprised of many steel wires, in the gap forming, is filled with zinc powder between every steel wire.
3. steel wire stay cable protector according to claim 1 and 2, is characterized in that: the cross sectional shape of described wire rope is polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420090555.5U CN203741718U (en) | 2014-02-28 | 2014-02-28 | Protective device for steel wire stay cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420090555.5U CN203741718U (en) | 2014-02-28 | 2014-02-28 | Protective device for steel wire stay cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203741718U true CN203741718U (en) | 2014-07-30 |
Family
ID=51341539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420090555.5U Withdrawn - After Issue CN203741718U (en) | 2014-02-28 | 2014-02-28 | Protective device for steel wire stay cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203741718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835235A (en) * | 2014-02-28 | 2014-06-04 | 华南理工大学 | Steel-wire stay cable protection device and production method thereof |
-
2014
- 2014-02-28 CN CN201420090555.5U patent/CN203741718U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835235A (en) * | 2014-02-28 | 2014-06-04 | 华南理工大学 | Steel-wire stay cable protection device and production method thereof |
| CN103835235B (en) * | 2014-02-28 | 2016-08-17 | 华南理工大学 | A kind of steel wire stay cable preventer and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140730 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |