CN106284345A - A kind of prestressed anchor fastening system - Google Patents
A kind of prestressed anchor fastening system Download PDFInfo
- Publication number
- CN106284345A CN106284345A CN201610904890.8A CN201610904890A CN106284345A CN 106284345 A CN106284345 A CN 106284345A CN 201610904890 A CN201610904890 A CN 201610904890A CN 106284345 A CN106284345 A CN 106284345A
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- China
- Prior art keywords
- nut
- anchor pole
- thread
- fastening system
- anchor
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Foundations (AREA)
Abstract
The invention discloses a kind of prestressed anchor fastening system, including anchor pole and the nut that is connected with anchor rod-matched, the strength of materials grade of anchor pole is continuous print non-standard circle-arc screw-thread structure with the strength of materials grade of nut than not less than 1.4:1, the external screw thread of anchor pole and the female thread of nut.The prestressed anchor fastening system of the present invention, utilize anchor pole and the circle-arc screw-thread structure of nut uniqueness and anchor pole and the obvious rank difference of nut material intensity, form a kind of self-locking closure system meeting high-frequency reciprocating dynamic loads working condition, there is axial anti-pulling and the fatigue behaviour of excellence.
Description
Technical field
The present invention relates to wind power foundation anchor pole fastening system, relate in particular to a kind of prestressed anchor rod locking system
System.
Background technology
Wind power foundation is the important component part of wind power technology equipment, sends out for fixing the wind-force of tall and slender structure form
Group of motors, bears the complex load during blower fan work, it is ensured that whole wind power generating set is the most steady together with blower fan tower barrel
Fixed operation, is design particularly important in present stage Construction of Wind Power and quality assurance link.
Prestressing force blower foundation relies primarily on the metal structures such as high-strength prestress anchor pole fastening system and supporting upper lower flange
Part realizes excellent Stress Transfer and stress distribution together with being jointly cast in concrete, overcomes conventional steel bar concrete structure weight
Power formula spread foundation efficiency of construction is poor, bending resistance is not enough, build guality is wayward, affected bigger etc. lacking by environment and geology
Fall into, there is resistant slide, antidumping and the environmental suitability of excellence, be to multiple necks such as conventional fan basic engineering theory and constructions
The great-leap-forward innovation in territory.
As the core component of prestressing force blower foundation, in addition to the characteristic of himself high-strength Gao Gang, with High strength bolt
Anchoring self-locking action with the prestressing force fastening system that nut is core self is for the realization of whole blower foundation combination property
Most important；In actual work process, High strength bolt fastening system the most all subjects certain axial stretch-draw effect,
Tower is tightly fixed together with whole basis, and makes the concrete between lower flange keep compressive state, for tower
One downward load, the axial force in opposing wind power generating set running and moment of flexure are provided.
The helicitic texture form of domestic currently used more anchor pole fastening system is the triangle that standard fasteners is conventional
Screw thread or trapezoidal thread, the strength grade ratio about 1.1: 1 of anchor pole strength of materials grade and attaching nut material, its connector loses
Effect decision criteria is designed as anchor pole fracture failure, and its design is more convenient with manufacture.But due to prestressed anchor fastening system
Practical working situation and standard fasteners have essential distinction, triangle thread structure and trapezoidal thread structure bearing larger axis
Effective stress sectional area when tensile load is less, it is easy to occurring stress to concentrate, load-carrying properties and self-locking performance are all paid no attention to
Think, under the high-frequency reciprocating dynamic loads effect under wind power generating set normal operating conditions, easily rupture, and due to
Its design failure criterion is the anchor pole fracture being embedded in concrete, once loses efficacy, and artificial repair and maintenance is difficult to find in time,
Based on current technology condition, this together with concreting and be embedded in the super large slenderness ratio form hardware base of underground
Cannot be carried out on Ben changing or maintenance, the fracture of single anchor pole will certainly destroy the stress balance of whole crab-bolt cage, then cause
The stress collection of prestressing force blower foundation local neutralizes the lasting failure fracture of more anchor pole chain reaction formulas, ultimately results in blower fan and inclines
The causality loss such as tiltedly even collapse.
Summary of the invention
The invention aims to overcome shortcoming of the prior art, it is provided that a kind of prestressed anchor fastening system.
For achieving the above object, the present invention by the following technical solutions: a kind of prestressed anchor fastening system, including anchor pole
And the nut being connected with anchor rod-matched, the strength of materials grade ratio of the strength of materials grade of anchor pole and nut is not less than 1.4:1, anchor
The external screw thread of bar and the female thread of nut are continuous print non-standard circle-arc screw-thread structure.
The external screw thread of described anchor pole is connected in sequence by circular arc at the bottom of crest circular arc, tangential straightway, tooth.
The external screw thread of described anchor pole is the external screw thread using cold rolling molding.
The female thread of described nut is connected in sequence by upper half circular arc, tangential straightway and plane crest.
The female thread of described nut is that employing machine adds or the female thread of the threaded molding of screw tap.
The fail-ure criterion criterion of described anchor pole and screw connector is that nut thread is threaded off.
The prestressed anchor fastening system of the present invention, utilizes anchor pole and the circle-arc screw-thread structure of nut uniqueness and anchor pole
Rank difference obvious with nut material intensity, forms a kind of self-locking securing member meeting high-frequency reciprocating dynamic loads working condition
System, has axial anti-pulling and the fatigue behaviour of excellence.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the externally threaded structural representation of anchor pole of the present invention.
Fig. 3 is the structural representation of the nut inner thread of the present invention.
Detailed description of the invention
Prestressed anchor fastening system as shown in Figure 1, Figure 2 and Figure 3, including anchor pole 1 and the spiral shell that is connected with anchor rod-matched
Female 2, the strength of materials grade ratio of the strength of materials grade of anchor pole 1 and nut 2 is not less than 1.4:1, the external screw thread of anchor pole 1 and nut
The female thread of 2 is continuous print non-standard circle-arc screw-thread structure, the external screw thread of anchor pole 1 by crest circular arc 3, tangential straightway 4,
At the bottom of tooth, circular arc 5 is connected in sequence, and the external screw thread of anchor pole 1 is the external screw thread using cold rolling molding, anchor pole 1 surface during rolling
Plastic deformation suffers restraints, and makes surface produce the highest residual compressive stress, and this surface is difficult to germinate fatigue crack, though surface
Having little micro-crack, crackle is not easy to extension；The female thread of nut 2 is depended on by upper half circular arc 6, tangential straightway 7 and plane crest 8
Secondary being formed by connecting, the female thread of nut 2 is that employing machine adds or the female thread of the threaded molding of screw tap.
The fail-ure criterion criterion of anchor pole 1 and nut 2 connector is that nut thread is threaded off, and the inefficacy that usual securing member uses is sentenced
Fixing and then rupture for screw rod, its design is more convenient with manufacture, and is prone to find；But prestressed anchor 1 is in actually used mistake
In journey together with concreting, anchor pole 1 once lost efficacy when rupturing, and artificial repair and maintenance is difficult to find in time, and
Cannot be carried out changing or maintenance, the fail-ure criterion criterion using nut thread to thread off, drawbacks described above can be avoided.
The prestressed anchor fastening system of the present invention is when carrying out rotation and tightening, and anchor pole 1 is complied with in the tooth side of nut 2 screw thread
Relatively tooth side, the two is fully mated good and after applying certain prestressing force effect, and the crest of anchor pole 1 screw thread is embedded into softer
Nut 2 screw thread respective carrier tooth side in, when by high-frequency reciprocating dynamic loads, along with the embedding of anchor pole 1 crest, nut 2
Thread crest rheology radially inward is big to the plastic deformation of the anchor pole 1 corresponding root radius of screw thread, absorbs energy many, and
Force part forms more contact, and effective stress sectional area is greatly improved, and makes external force be possible not only between anchor pole 1 and nut 2
Fast and effeciently transmit and distribute, moreover it is possible to being farthest consumed, so that this system has the self-locking property and resistance to of excellence
Fatigue behaviour；In assembling and loading process, this prestressing force fastening system produce be similar to standard anchor pole and nut step up make
With, difference be this fastening system fully utilize circle-arc screw-thread construction features and anchor pole material and nut material it
Between bigger strength grade difference define uniqueness locking bearer properties, have excellence axial anti-pulling and fatigue behaviour.
Embodiment
The strength of materials grade of anchor pole 1 is 8.8 grades, and tensile strength is not less than 830MPa, and yield strength is not less than 660MPa,
The strength of materials grade of matched nut 2 is 6 grades, and tensile strength is not less than 470MPa, and yield strength is not less than 345MPa,
Anchor pole 1 and nut 2 Screw Thread Fit Clearance are 0.2mm, anchor pole 1 polished rod a diameter of Φ 45mm, and the minimum tensile load of anchor pole 1 is
122 tons, minimum yield load is 97 tons, and anchor pole 1 actual breaking load is 140 tons, and anchor pole 1 is actual with nut 2 auxiliary connection to be destroyed
Load is 120 tons, and failure mode is that nut 2 screw thread is threaded off, and anchor pole 1 screw thread does not destroys.
Claims (6)
1. a prestressed anchor fastening system, including anchor pole and the nut that is connected with anchor rod-matched, it is characterised in that: anchor pole
Strength of materials grade is than not less than 1.4:1, the external screw thread of anchor pole and the female thread of nut with the strength of materials grade of nut
Continuous print non-standard circle-arc screw-thread structure.
Prestressed anchor fastening system the most according to claim 1, it is characterised in that: the external screw thread of described anchor pole is by crest
Circular arc at the bottom of circular arc, tangential straightway, tooth is connected in sequence.
Prestressed anchor fastening system the most according to claim 2, it is characterised in that: the external screw thread of described anchor pole is for using
The external screw thread of cold rolling molding.
Prestressed anchor fastening system the most according to claim 1, it is characterised in that: the female thread of described nut is by upper half
Circular arc, tangential straightway and plane crest are connected in sequence.
Prestressed anchor fastening system the most according to claim 4, it is characterised in that: the female thread of described nut is for using
Machine adds or the female thread of the threaded molding of screw tap.
Prestressed anchor fastening system the most according to claim 1, it is characterised in that: described anchor pole and screw connector
Fail-ure criterion criterion is that nut thread is threaded off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610904890.8A CN106284345A (en) | 2016-10-18 | 2016-10-18 | A kind of prestressed anchor fastening system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610904890.8A CN106284345A (en) | 2016-10-18 | 2016-10-18 | A kind of prestressed anchor fastening system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106284345A true CN106284345A (en) | 2017-01-04 |
Family
ID=57718669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610904890.8A Pending CN106284345A (en) | 2016-10-18 | 2016-10-18 | A kind of prestressed anchor fastening system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106284345A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958698A (en) * | 2019-04-28 | 2019-07-02 | 中船重工海为郑州高科技有限公司 | A kind of high intensity circular thread auxiliary connection |
| CN109967982A (en) * | 2019-04-28 | 2019-07-05 | 中船重工海为郑州高科技有限公司 | A kind of preparation method of wind power generating set circular thread anchor component |
| CN112576594A (en) * | 2020-12-07 | 2021-03-30 | 泰尔重工股份有限公司 | Large-root fillet uniform-strength thread and machining method thereof |
| CN113420394A (en) * | 2021-07-14 | 2021-09-21 | 中船重工海为郑州高科技有限公司 | Design method of arc threaded connection pair |
| CN116877555A (en) * | 2023-06-05 | 2023-10-13 | 中船海为高科技有限公司 | Double-end stud for connecting wind turbine generator blade root and processing method thereof |
| CN117889137A (en) * | 2024-03-18 | 2024-04-16 | 中国航发四川燃气涡轮研究院 | Bolt structure capable of improving fatigue resistance of inter-disc bolts and design method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201158820Y (en) * | 2008-02-18 | 2008-12-03 | 成都现代万通锚固技术有限公司 | Full threaded mortar anchor bar |
| KR20080109212A (en) * | 2007-06-12 | 2008-12-17 | 양지건설 (주) | Earth anchor bracket of which an angle is controllable |
| CN102433879A (en) * | 2011-11-17 | 2012-05-02 | 武汉大学 | Assembling unit for exerting prestress on glass fiber reinforced plastic anchor bolt and using method thereof |
| CN102828761A (en) * | 2012-09-05 | 2012-12-19 | 淮南市顺辉锚固有限公司 | Full-thread glass fiber composite hollow grouting anchor rod |
| CN204061472U (en) * | 2013-12-25 | 2014-12-31 | 中国船舶重工集团公司第七一三研究所 | A kind of circular thread bindiny mechanism |
| CN206090557U (en) * | 2016-10-18 | 2017-04-12 | 中国船舶重工集团公司第七一三研究所 | Tight system of prestressed anchorage lever lock |
-
2016
- 2016-10-18 CN CN201610904890.8A patent/CN106284345A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080109212A (en) * | 2007-06-12 | 2008-12-17 | 양지건설 (주) | Earth anchor bracket of which an angle is controllable |
| CN201158820Y (en) * | 2008-02-18 | 2008-12-03 | 成都现代万通锚固技术有限公司 | Full threaded mortar anchor bar |
| CN102433879A (en) * | 2011-11-17 | 2012-05-02 | 武汉大学 | Assembling unit for exerting prestress on glass fiber reinforced plastic anchor bolt and using method thereof |
| CN102828761A (en) * | 2012-09-05 | 2012-12-19 | 淮南市顺辉锚固有限公司 | Full-thread glass fiber composite hollow grouting anchor rod |
| CN204061472U (en) * | 2013-12-25 | 2014-12-31 | 中国船舶重工集团公司第七一三研究所 | A kind of circular thread bindiny mechanism |
| CN206090557U (en) * | 2016-10-18 | 2017-04-12 | 中国船舶重工集团公司第七一三研究所 | Tight system of prestressed anchorage lever lock |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958698A (en) * | 2019-04-28 | 2019-07-02 | 中船重工海为郑州高科技有限公司 | A kind of high intensity circular thread auxiliary connection |
| CN109967982A (en) * | 2019-04-28 | 2019-07-05 | 中船重工海为郑州高科技有限公司 | A kind of preparation method of wind power generating set circular thread anchor component |
| CN112576594A (en) * | 2020-12-07 | 2021-03-30 | 泰尔重工股份有限公司 | Large-root fillet uniform-strength thread and machining method thereof |
| CN112576594B (en) * | 2020-12-07 | 2022-01-11 | 泰尔重工股份有限公司 | Large-root fillet uniform-strength thread and machining method thereof |
| CN113420394A (en) * | 2021-07-14 | 2021-09-21 | 中船重工海为郑州高科技有限公司 | Design method of arc threaded connection pair |
| CN113420394B (en) * | 2021-07-14 | 2022-10-11 | 中船重工海为郑州高科技有限公司 | Design method of arc threaded connection pair |
| CN116877555A (en) * | 2023-06-05 | 2023-10-13 | 中船海为高科技有限公司 | Double-end stud for connecting wind turbine generator blade root and processing method thereof |
| CN117889137A (en) * | 2024-03-18 | 2024-04-16 | 中国航发四川燃气涡轮研究院 | Bolt structure capable of improving fatigue resistance of inter-disc bolts and design method thereof |
| CN117889137B (en) * | 2024-03-18 | 2024-06-04 | 中国航发四川燃气涡轮研究院 | Bolt structure capable of improving fatigue resistance of inter-disc bolts and design method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170104 |