CN211715509U - Anticorrosive bridge main tower screw rod - Google Patents
Anticorrosive bridge main tower screw rod Download PDFInfo
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- CN211715509U CN211715509U CN201922351553.2U CN201922351553U CN211715509U CN 211715509 U CN211715509 U CN 211715509U CN 201922351553 U CN201922351553 U CN 201922351553U CN 211715509 U CN211715509 U CN 211715509U
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- polysulfide sealant
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Abstract
The utility model discloses anticorrosive bridge king-tower screw rod includes the screw rod body, and the surface coating of screw rod body has the inoxidizing coating, and the inoxidizing coating includes the epoxy priming paint layer, polysulfide sealant layer one, the glass cloth layer that excels in, polysulfide sealant layer two, the polyurethane finish paint layer that set gradually from inside to outside. The utility model discloses anticorrosive bridge king-tower screw rod has simple structure, anticorrosive effectual, the high advantage of fail safe nature.
Description
Technical Field
The utility model relates to a screw rod especially relates to an anchor screw rod that is used for large-scale suspension bridge or cable-stay bridge king-tower.
Background
For bridges in Yangtze river and at sea, corrosion prevention is an important factor for guaranteeing the durability of the bridges, a stiffening beam of a steel structure, a main cable, a sling and accessory facilities are all prevented from being corroded, high-quality paint is coated, and a dehumidifier is arranged in a steel beam, an anchor chamber and a saddle cover. Some bridge main cables are provided with a dry air supply machine to control the humidity in the main cables. Measures must also be taken to prevent corrosion of the main tower anchor in water containing chloride ions or concrete in the splash zone.
The main tower anchoring screw (hereinafter referred to as main tower screw) is usually processed by alloy structural steel, the existing main tower screw is usually coated by two-felt three-oil coating, and a protective layer formed by coating by the method has poor anti-corrosion effect, so that the safety and reliability of the main tower screw are low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a simple structure, anticorrosive effectual, the high anticorrosive bridge king-tower screw rod of fail safe nature.
The utility model discloses anticorrosive bridge king-tower screw rod, including the screw rod body, the surface coating of screw rod body has the inoxidizing coating, the inoxidizing coating includes the epoxy priming paint layer, polysulfide sealant layer one, the glass cloth layer that excels in, polysulfide sealant layer two, the polyurethane finish paint layer that sets gradually from inside to outside.
The utility model discloses anticorrosive bridge king-tower screw rod, wherein, the thickness of epoxy priming paint layer is 80 mu m.
The utility model discloses anticorrosive bridge main tower screw rod, wherein, polysulfide sealant layer one's thickness is 2000-cake 3000 mu m, polysulfide sealant layer two's thickness is 2000-cake 3000 mu m, just polysulfide sealant layer one's thickness and polysulfide sealant layer two's thickness sum is 5000 mu m.
The utility model discloses anticorrosive bridge king-tower screw rod, wherein, the thickness of polyurethane finish paint layer is 120 mu m.
The utility model discloses anticorrosive bridge king-tower screw rod, wherein, the glass cloth layer that excels in is the glass cloth layer that excels in that the winding of 50% overlap joint formed by the glass cloth that excels in.
The utility model discloses anticorrosive bridge king-tower screw rod, wherein, the thickness on high strength glass cloth layer is 600 mu m.
The utility model discloses anticorrosive bridge king-tower screw rod is different from the prior art in that the utility model discloses anticorrosive bridge king-tower screw rod includes the screw rod body, the surface coating of screw rod body has the inoxidizing coating, the inoxidizing coating includes epoxy primer layer, polysulfide sealant layer one, high strength glass cloth layer, polysulfide sealant layer two, polyurethane finish paint layer that set gradually from inside to outside, simple structure; the protective layer comprises two polysulfide sealant layers and a polyurethane finish paint layer, and a high-strength glass cloth layer is arranged between the two polysulfide sealant layers, so that the protective layer is good in corrosion resistance effect and high in safety and reliability.
The utility model discloses in the anticorrosive bridge king-tower screw rod, the inoxidizing coating reaches 5800 mu m, and intensity is high, and it is effectual to anticorrosize.
The corrosion-proof main tower screw of the bridge of the present invention will be further explained with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of the anti-corrosion bridge main tower screw of the present invention;
fig. 2 is a cross-sectional view taken along line a-a of fig. 1.
Detailed Description
As shown in fig. 1, the utility model discloses anticorrosive bridge king-tower screw rod includes anticorrosive bridge king-tower screw rod, including screw rod body 1, screw rod body 1's surface coating has inoxidizing coating 2, and inoxidizing coating 2 includes epoxy primer layer 21, polysulfide sealant layer 22, high strength glass cloth layer 23, polysulfide sealant layer two 24, the polyurethane finish paint layer 25 that sets gradually from inside to outside.
As shown in FIG. 2, the thickness of the epoxy primer layer 21 is 80 μm, the thickness of the polyurethane topcoat layer 25 is 120 μm, and the thickness of the high-strength glass cloth layer 23 is 600 μm.
Wherein, the thickness of the first polysulfide sealant layer 22 is 3000 μm and the thickness of the second polysulfide sealant layer 24 is 3000 μm and 2000-2000, and the sum of the thickness of the first polysulfide sealant layer 22 and the thickness of the second polysulfide sealant layer 24 is 5000 μm.
The high-strength glass cloth layer 23 is formed by lapping and winding high-strength glass cloth according to 50%.
The utility model discloses in anticorrosive bridge main tower screw rod, the 2 applications of inoxidizing coating are on the surface of screw rod body 1, use the screw rod that the diameter is 90mm as an example, with screw rod body 1's surface sanitization before the application, and carry out the application construction in sanitization 1h, at first brush the epoxy priming paint twice, dry film thickness 80 mu m, form epoxy priming paint layer 21, then form polysulfide sealant 22 at epoxy priming paint layer 21 surface blade coating polysulfide sealant, it is two-layer according to 50% lap winding mode winding high strength glass cloth simultaneously, form high strength glass cloth layer 23, later at high strength glass cloth layer 23 surface coating twice polysulfide sealant, and the plastic is smooth, form polysulfide sealant layer two 24, brush the polyurethane finish paint three times on polysulfide sealant layer two 24 surface, dry film thickness 120 mu m, form polyurethane finish paint layer 25.
During the use, will the utility model discloses anticorrosive bridge king-tower screw rod includes anticorrosive bridge king-tower screw rod surface winding protection plastic cloth to it is fixed with binding the area, it can to transport the job site use.
The utility model discloses anticorrosive bridge king-tower screw rod, simple structure includes two-layer polysulfide sealant layer and polyurethane finish paint layer in the inoxidizing coating, and sets up the glass cloth layer that excels in between two-layer polysulfide sealant layer, has increased the fastness of anticorrosive coating, and whole protective layer thickness reaches 5800 mu m, and intensity is high, and it is effectual to anticorrosive, and fail safe nature is high. Besides, the utility model discloses the anticorrosive bridge king-tower screw rod is at the in-process of stretch-draw, and king-tower screw rod and outlying concrete produce relative sliding, conveniently exert prestressing force.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (6)
1. The utility model provides an anticorrosive bridge king-tower screw rod, includes screw rod body (1), its characterized in that: the surface of the screw body (1) is coated with the protective layer (2), and the protective layer (2) comprises an epoxy primer layer (21), a first polysulfide sealant layer (22), a high-strength glass fabric layer (23), a second polysulfide sealant layer (24) and a polyurethane finish paint layer (25) which are sequentially arranged from inside to outside.
2. The anti-corrosion bridge main tower screw of claim 1, wherein: the thickness of the epoxy primer layer (21) is 80 μm.
3. The anti-corrosion bridge main tower screw of claim 2, wherein: the thickness of the first polysulfide sealant layer (22) is 2000-3000 μm, the thickness of the second polysulfide sealant layer (24) is 2000-3000 μm, and the sum of the thickness of the first polysulfide sealant layer (22) and the thickness of the second polysulfide sealant layer (24) is 5000 μm.
4. The anti-corrosion bridge main tower screw of claim 3, wherein: the thickness of the polyurethane finish paint layer (25) is 120 mu m.
5. The anti-corrosion bridge main tower screw of claim 4, wherein: the high-strength glass cloth layer (23) is formed by lapping and winding high-strength glass cloth according to 50%.
6. The anti-corrosion bridge main tower screw of claim 5, wherein: the thickness of the high-strength glass cloth layer (23) is 600 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922351553.2U CN211715509U (en) | 2019-12-24 | 2019-12-24 | Anticorrosive bridge main tower screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922351553.2U CN211715509U (en) | 2019-12-24 | 2019-12-24 | Anticorrosive bridge main tower screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211715509U true CN211715509U (en) | 2020-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922351553.2U Active CN211715509U (en) | 2019-12-24 | 2019-12-24 | Anticorrosive bridge main tower screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211715509U (en) |
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2019
- 2019-12-24 CN CN201922351553.2U patent/CN211715509U/en active Active
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