CN213062422U - Anticorrosive type wind-powered electricity generation crab-bolt - Google Patents
Anticorrosive type wind-powered electricity generation crab-bolt Download PDFInfo
- Publication number
- CN213062422U CN213062422U CN202020733645.7U CN202020733645U CN213062422U CN 213062422 U CN213062422 U CN 213062422U CN 202020733645 U CN202020733645 U CN 202020733645U CN 213062422 U CN213062422 U CN 213062422U
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- Prior art keywords
- screwing
- corrosion
- anchor bolt
- crab
- anticorrosive
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Abstract
The utility model discloses an anticorrosive type wind-powered electricity generation crab-bolt, including crab-bolt body and separation sleeve, the crab-bolt body includes polished rod portion and sets up in the screw thread portion at polished rod portion both ends, and smooth rod portion is located to the separation sleeve cover, is equipped with the anticorrosive grease layer between separation sleeve and the polished rod portion, and equal threaded connection has gland nut, the anticorrosive grease layer of gland nut seal on the screw thread portion of crab-bolt body. The utility model seals the anti-corrosion grease layer through the sealing nut, so that the anti-corrosion grease can protect the anchor bolt body from corrosion, and the loss of the anti-corrosion grease is avoided, thereby prolonging the service life of the anti-corrosion grease and improving the reliability of corrosion resistance; through set up the opening on the isolation sleeve, gland nut seals the first screw in district of tip earlier, can conveniently pour into anticorrosive grease into to anticorrosive grease layer, again with gland nut screw in second screw in district, can seal the opening, reduces artifical fat liquoring operation, convenient production reduces workman's intensity of labour.
Description
Technical Field
The utility model relates to an crab-bolt field, especially an anticorrosive type wind-powered electricity generation crab-bolt.
Background
The prestressed anchor bolt foundation is a foundation type commonly used for a wind power generation structure, and under the foundation structure, the upper load of a wind turbine generator is transmitted to a concrete foundation through a prestressed anchor bolt assembly. The anchor bolt assembly consists of an upper anchor plate, a lower anchor plate, an anchor bolt and an anchor bolt matching part, wherein the anchor bolt is used as a prestress tension member of the foundation concrete and plays a role of fastening and connecting an upper structure, and is a key part. The anchor bolt has two ends with screw thread and middle part with smooth rod part. The body material that the crab-bolt adopted adopts metal material, once the crab-bolt structure buries the concrete, need guarantee not to corrode in long-time life cycle (20 years ~ 25 years), for this reason, the anticorrosive design of crab-bolt just becomes crucial.
In the prior art, the most common anticorrosion method is to perform Dacromet or hot-dip galvanizing anticorrosion coating treatment on the surface of the anchor bolt, and a thermal shrinkage sleeve anticorrosion mode is also adopted. The hot-dip galvanizing corrosion resistance has certain corrosion resistance, but the anchor bolt has certain hydrogen embrittlement risk after the hot-dip galvanizing, and has no acid resistance. The dacromet treatment also has no acid resistance, and the dacromet contains chromic anhydride, which causes environmental pollution; the Dacromet has the advantages of higher sintering temperature, longer time and high energy consumption. In addition, the brittle hard coating treated by the Dacromet technology can generate large deformation after the anchor bolt is tensioned. Meanwhile, the elongation of the anchor bolt is constantly changed due to the influence of wind load, and the hot-dip zinc and dacromet paint film is easy to crack under the action of alternating stress. In addition, the dacromet or hot dip zinc anticorrosive coating treatment is weak against water immersion corrosion.
The common anticorrosion measure in the prior art is also realized by sleeving the protective sleeve on the outer side of the anchor bolt body. The sheath is used for protecting the anchor bolt body and protecting the anti-corrosion coating so as to prevent the anti-corrosion coating from being damaged. The anti-corrosion sheath adopts a polyethylene heat shrinkable sleeve, and the heat shrinkable sleeve shrinks under the heating condition to tightly wrap the protected anchor bolt, so that the anchor bolt is sealed. When the heat shrinkable sleeve is used, the heat shrinkable sleeve is bulged due to construction reasons such as uneven baking and the like in the actual application process. Meanwhile, the adhesion between the heat-shrinkable sleeve and the anchor bolt is not firm, and air bubbles are easily formed between the heat-shrinkable sleeve and the anchor bolt, so that the corrosion resistance is influenced, and the service life of the anchor bolt is greatly influenced; especially under high temperature, the anchor bolt can be debonded due to poor adhesion, and the defect can be continuously expanded along with the passage of time, so that the corrosion resistance of the heat-shrinkable sleeve is failed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem, a corrosion-resistant wind power anchor bolt is designed.
Realize above-mentioned purpose the technical scheme of the utility model be, an anticorrosive type wind-powered electricity generation crab-bolt, including crab-bolt body and separation sleeve, the crab-bolt body includes polished rod portion and sets up in the screw thread portion at polished rod portion both ends, and smooth rod portion is located to separation sleeve cover, the separation sleeve with be equipped with the anticorrosive grease layer between the polished rod portion, equal threaded connection has gland nut in the screw thread portion of crab-bolt body, gland nut seals anticorrosive grease layer.
Preferably, the sealing nut comprises a screwing part and an exposed part, the screwing part is provided with an internal thread in threaded connection with the threaded part, an inner sealing ring for sealing the threaded part is fixed in the internal thread, the outer wall of the screwing part is provided with an annular groove, and an outer sealing ring for sealing the isolation sleeve is fixed in the annular groove.
Preferably, two openings are radially arranged at two ends of the isolation sleeve, wherein one opening is used for feeding, and the other opening is used for balancing air pressure.
Preferably, a first screwing-in area and a second screwing-in area are arranged in the isolation sleeve and positioned on two sides of the opening, when the screwing-in end of the screwing-in part is positioned in the first screwing-in area, the end part of the isolation sleeve is closed by the sealing nut, and the opening is open; when the screwing-in end of the screwing-in part is positioned in the second screwing-in area, the sealing nut seals the isolation sleeve and the opening.
Preferably, the isolation sleeve is a PVC pipe.
Preferably, the anchor bolt body is plated with a zinc-chromium coating on the outer surface.
Preferably, the corrosion-resistant grease layer is filled with corrosion-resistant grease.
The utility model has the advantages that: the anti-corrosion grease layer is sealed by the sealing nut, so that the anti-corrosion grease can protect the anchor bolt body from corrosion, the loss of the anti-corrosion grease is avoided, the service life of the anti-corrosion grease is prolonged, and the anti-corrosion reliability is improved; through setting up the opening, gland nut seals the first screw in district of tip earlier, can conveniently pour into anticorrosive grease into to anticorrosive grease layer into, can seal the opening with gland nut screw in second screw in district again, reduces artifical fat liquoring operation, and convenient production reduces workman's intensity of labour.
Drawings
FIG. 1 is a schematic structural view of the anti-corrosion wind power anchor bolt of the present invention;
fig. 2 is a state diagram i of the anti-corrosion wind power anchor bolt of the present invention (the screwing end of the screwing part is located in the first screwing region);
fig. 3 is a state diagram ii of the anti-corrosion wind power anchor bolt of the present invention (the screwing end of the screwing part is located in the second screwing region);
FIG. 4 is an enlarged view of a portion of FIG. 1;
FIG. 5 is a schematic structural view of a gland nut;
in the figure, 1, an anchor bolt body; 11. a light bar section; 12. a threaded portion; 2. an isolation sleeve; 21. an opening; 22. a first screwing-in area; 23. a second screwing-in area; 3. a corrosion-resistant grease layer; 4. a seal nut; 41. a screw-in part; 411. an internal thread; 412. an inner seal ring; 413. a circular groove; 414. an outer sealing ring; 42. an exposed portion.
Detailed Description
The utility model is described in detail with reference to the accompanying drawings, as shown in FIG. 1, an anti-corrosion wind power anchor bolt comprises an anchor bolt body 1 and an isolation sleeve 2, wherein the anchor bolt body 1 comprises a polished rod part 11 and thread parts 12 arranged at two ends of the polished rod part 11, the polished rod part 11 is sleeved with the isolation sleeve 2, an anti-corrosion grease layer 3 is arranged between the isolation sleeve 2 and the polished rod part 11, a sealing nut 4 is connected to the thread part 12 of the anchor bolt body 1 in a threaded manner, and the sealing nut 4 seals the anti-corrosion grease layer 3.
As shown in fig. 5, the sealing nut 4 includes a screw portion 41 and an exposed portion 42, the screw portion 41 has an internal thread 411 in threaded connection with the threaded portion 12, an internal sealing ring 412 for sealing the threaded portion 12 is fixed in the internal thread 411, an annular groove 413 is opened on the outer wall of the screw portion 41, and an external sealing ring 414 for sealing the isolation sleeve 2 is fixed in the annular groove 413.
In the above description, the inner wall of the inner seal ring 412 is fitted with the threaded portion 12 and seals the threaded portion 12, and the annular groove 413 fixes the outer seal ring 414 to prevent the outer seal ring 414 from separating from the seal nut 4; due to the influence of wind load, the elongation of the anchor bolt is in continuous change, cracks are easily generated on the hot-dip zinc and dacromet paint film under the action of alternating stress, the outer sealing ring 414 and the inner sealing ring 412 can always seal the anticorrosive grease layer 3, and the outer sealing ring and the inner sealing ring move in a certain small range with the isolation sleeve 2 in the stress change process of the anchor bolt body 1, so that a high sealing effect is kept; the inner sealing ring 412 is fixed in the internal thread 411 in a clamping manner of a nut with the inner sealing ring 412 in the prior art, and can also be fixed in the internal thread 411 in other manners such as an adhesion manner; the exposed part 42 is used for being connected with a power mechanism so as to rotate the sealing nut 4, the exposed part 42 is preferably arranged to be in a flange structure, the power mechanism is inserted into a flange hole to drive the sealing nut 4 to rotate, and the power mechanism can also be in a structure with a regular polygon edge and is clamped by the power mechanism to drive the sealing nut to rotate.
As shown in fig. 1-4, the spacer 2 has two openings 21 at both ends in the radial direction, wherein one opening 21 is used for feeding and the other opening 21 is used for balancing the air pressure.
During production, anticorrosive grease is injected into one opening 21, and the other opening 21 is communicated with the atmosphere to balance air pressure, so that the anticorrosive grease can be continuously injected.
A first screwing-in area 22 and a second screwing-in area 23 are arranged in the isolation sleeve 2 and positioned on two sides of the opening 21, when the screwing-in end of the screwing-in part 41 is positioned in the first screwing-in area 22, the end part of the isolation sleeve 2 is sealed by the sealing nut 4, and the opening 21 is open; when the screw-in end of the screw-in portion 41 is located in the second screw-in region 23, the sealing nut 4 closes the spacer 2 and the opening 21.
Preferably, the isolation sleeve 2 is a PVC pipe which has corrosion resistance and long service life and can isolate the anti-corrosion grease layer 3 from the outside.
Preferably, the anchor bolt body 1 is coated with a zinc-chromium coating on its outer surface. The zinc-chromium coating plays a certain role in corrosion resistance, and the zinc-chromium coating is wrapped with the corrosion-resistant grease, so that the corrosion-resistant effect can be further improved.
Preferably, the layer of anti-corrosive grease 3 is filled with anti-corrosive grease. The antiseptic oil can be various oils with antiseptic function, such as butter or mixed oil added with antiseptic or antirust agent.
During production, two openings 21 are radially formed at two ends of a PVC pipe, the PVC pipe is sleeved on the anchor bolt body 1, two sealing nuts 4 are respectively screwed into the threaded parts 12 at two sides of the anchor bolt body 1, and the sealing nuts 4 are screwed into the first screwing-in area 22, so that the sealing nuts 4, the PVC pipe and the anchor bolt body 1 form an anticorrosive material filling cavity; then, an anticorrosive material is injected into one of the openings 21, the other opening 21 is communicated with the atmosphere, the air pressure is balanced, the injection of anticorrosive grease can be promoted by rotating the anchor bolt body 1 in the period, the anticorrosive grease can be heated in advance to be completely liquefied, and the anticorrosive grease can be conveniently injected into the anticorrosive material filling cavity until the anticorrosive material is approximately filled in the anticorrosive material filling cavity; finally, the sealing nut 4 is screwed into the second screwing-in area 23 to close the opening 21, so that the sealing nut 4 closes the anticorrosive material filling cavity.
Anticorrosive material is brushed alone to screw portion 12, can wind the fixed band between gland nut 4 and spacer sleeve 2 to increase the frictional force between gland nut 4 and spacer sleeve 2, make more stable between gland nut 4 and spacer sleeve 2.
Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.
Claims (7)
1. The utility model provides an anticorrosive type wind-powered electricity generation crab-bolt, includes crab-bolt body (1) and separation sleeve (2), crab-bolt body (1) includes smooth rod portion (11) and sets up in screw thread portion (12) at smooth rod portion (11) both ends, and smooth rod portion (11), its characterized in that are located to separation sleeve (2) cover, separation sleeve (2) with be equipped with anticorrosive grease layer (3) between smooth rod portion (11), equal threaded connection has seal nut (4) on screw thread portion (12) of crab-bolt body (1), seal nut (4) are sealed anticorrosive grease layer (3).
2. The anticorrosion wind power anchor bolt according to claim 1, wherein the sealing nut (4) comprises a screwing portion (41) and an exposed portion (42), the screwing portion (41) is provided with an internal thread (411) in threaded connection with the threaded portion (12), an internal sealing ring (412) for sealing the threaded portion (12) is fixed in the internal thread (411), an annular groove (413) is formed in the outer wall of the screwing portion (41), and an external sealing ring (414) for sealing the isolation sleeve (2) is fixed in the annular groove (413).
3. The anti-corrosion wind power anchor bolt according to claim 2, characterized in that two openings (21) are radially opened at two ends of the isolation sleeve (2), wherein one opening (21) is used for feeding, and the other opening (21) is used for balancing air pressure.
4. The anticorrosion wind power anchor bolt as recited in claim 3, wherein a first screwing-in area (22) and a second screwing-in area (23) are provided in the isolation sleeve (2) and located on both sides of the opening (21), when the screwing-in end of the screwing-in portion (41) is located in the first screwing-in area (22), the sealing nut (4) closes the end of the isolation sleeve (2), and the opening (21) is open; when the screwing-in end of the screwing-in part (41) is positioned in the second screwing-in area (23), the sealing nut (4) seals the isolation sleeve (2) and the opening (21).
5. The anti-corrosion wind power anchor bolt according to any one of claims 1 to 4, wherein the spacer sleeve (2) is a PVC pipe.
6. The anti-corrosion wind power anchor bolt according to claim 5, characterized in that the anchor bolt body (1) is coated with Zn-Cr on the outer surface.
7. An anticorrosion wind power anchor bolt according to claim 6, characterized in that the anticorrosion grease layer (3) is filled with anticorrosion grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020733645.7U CN213062422U (en) | 2020-05-09 | 2020-05-09 | Anticorrosive type wind-powered electricity generation crab-bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020733645.7U CN213062422U (en) | 2020-05-09 | 2020-05-09 | Anticorrosive type wind-powered electricity generation crab-bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213062422U true CN213062422U (en) | 2021-04-27 |
Family
ID=75551742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020733645.7U Expired - Fee Related CN213062422U (en) | 2020-05-09 | 2020-05-09 | Anticorrosive type wind-powered electricity generation crab-bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213062422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116044881A (en) * | 2023-03-30 | 2023-05-02 | 河北邦德威电力器材股份有限公司 | Anticorrosive wind-powered electricity generation crab-bolt and production assembly quality thereof |
-
2020
- 2020-05-09 CN CN202020733645.7U patent/CN213062422U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116044881A (en) * | 2023-03-30 | 2023-05-02 | 河北邦德威电力器材股份有限公司 | Anticorrosive wind-powered electricity generation crab-bolt and production assembly quality thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |