CN202789339U - Major diameter steel structure high-strength bolt connection pairs - Google Patents
Major diameter steel structure high-strength bolt connection pairs Download PDFInfo
- Publication number
- CN202789339U CN202789339U CN2012203232308U CN201220323230U CN202789339U CN 202789339 U CN202789339 U CN 202789339U CN 2012203232308 U CN2012203232308 U CN 2012203232308U CN 201220323230 U CN201220323230 U CN 201220323230U CN 202789339 U CN202789339 U CN 202789339U
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- China
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- strength
- strength bolt
- steel structure
- diameter steel
- nut
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- Expired - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Bolts, Nuts, And Washers (AREA)
- Connection Of Plates (AREA)
Abstract
The utility model relates to major diameter steel structure high-strength bolt connection pairs which comprise a high-strength bolt, a high-strength nut, a high-strength gasket, a first connection pair and a second connection pair. The high-strength bolt penetrates through through holes of the first connection pair and the second connection pair. The high-strength gasket and the high-strength nut are sleeved on the tail portion of the high-strength bolt. The major diameter steel structure high-strength bolt connection pairs are manufactured according to national standard, strength is 10.9S/10H, strength of extension is 1040N/mm (2), and a requirement of fastening pieces of the wind power industry is satisfied.
Description
Technical field
The utility model belongs to the Investment in fastener industry in the spare part in common use industry, exactly, is a kind of Large-diameter Steel structure high strength bolt connection pairs.
Background technique
At present steel structure with high strength bolt connection pairs institute according to and the maximum diameter specification that standard GB/T/T1228 ~ 1231-2006 stipulates of execution be M30, but, the required steel structure of wind-powered electricity generation industry that develops rapidly in recent years with high strength bolt connection pairs considerably beyond M30, no matter be wind-powered electricity generation industry or Investment in fastener industry all without the NBS foundation, the foreign standard of can only consulting and carrying out.
Summary of the invention
In order to adapt to the situation of wind-powered electricity generation industry development, according to NBS, the purpose of this utility model is to provide a kind of Large-diameter Steel structure high strength bolt connection pairs.
The purpose of this utility model is achieved in that
A kind of Large-diameter Steel structure high strength bolt connection pairs contains high-strength bolt, high strength nut, high-strength steel washer, the first auxiliary connection and the second auxiliary connection.The high-strength bolt diameter is M36-M64, and high-strength steel washer end face chamfering is 45 °; High-strength bolt passes the through hole of the first auxiliary connection and the second auxiliary connection, and the afterbody cover has high-strength steel washer and fastening high strength nut.
Above-mentioned high-strength bolt end is large hexagon head, or is large four angle heads; The fastening heavy series hexagon nut of afterbody, or be large four angle head nuts.
The beneficial effect of advantage of the present utility model and generation is:
The maximum diameter specification of 1, major diameter: standard GB/T/T1228 ~ 1231-2006 regulation is M30, and the utility model is according to NBS, stipulate the form size of the major diameter specifications such as M36, M39, M42, M45, M48, M56, M64, satisfied the required Large-diameter Steel structure of wind-powered electricity generation industry high strength bolt connection pairs.
2, high strength: the utility model intensity is the 10.9S/10H level, and intensity rank is high, and requires to satisfy 0.110 ~ 0.150 auxiliary connection torque coefficient.
3, different from GB/T1228 ~ 1231-2006 is that NBS requires the normal temperature impact absorbing energy, and the major diameter high-strength large hexagon head bolt used for steel structure requires-45 ℃, 27 joules low-temperature impact to absorb merit, can adapt to each operating mode, the requirement of rugged environment.
4, the utility model is selected 42 chrome molybdenum metallic material and quenching, tempering heat treatment, surface treatment, and tensile strength is 1040N/mm
2-1240N/mm
2
5, screw thread processing: the utility model is by the requirement of 10.9S10h level, and the screw thread of high-strength bolt is the processing of car silk after heat treatment (modified), thereby guaranteed accuracy of thread.
Description of drawings
Fig. 1 is the utility model schematic representation.
Fig. 2 is Fig. 1 high-strength big six-angle spiral schematic representation.
Fig. 3 is Fig. 1 high strength heavy series hexagon nut schematic representation.
Fig. 4 is Fig. 1 high-strength steel washer schematic representation.
Embodiment
As shown in Figure 1, a kind of Large-diameter Steel structure high strength bolt connection pairs contains high-strength big six-angle spiral 1, high strength heavy series hexagon nut 2, high-strength steel washer 3, the first auxiliary connection 4 and the second auxiliary connection 5.High-strength big six-angle spiral 1 is through the annealing → material transformation of the way → blanking → flat two chamfers → contracting base footpath → forge hot → hexagon head chamfering → modified → rolled thread → surface treatment
High strength Hexagon head bolt 1 end-beveling is that 30 ° of diameters are M48; High-strength steel washer 3 end face chamferings are 45 °; High-strength big six-angle spiral 1 is passed the through hole of the first auxiliary connection 4 and the second auxiliary connection 5, and the afterbody cover of bolt has the high strength heavy series hexagon nut 2 of high-strength steel washer 3 and fastening the first auxiliary connection 4 and the second auxiliary connection 5.
In the installation process of auxiliary connection, carry out operation in strict accordance with the fitting operation code requirement.
Before the installation, should evenly smear one deck molybdenum disulfide at high-strength big six-angle spiral 1 helical thread portion; The high-strength big six-angle spiral 1 of smearing behind the molybdenum disulfide will be put neatly, must not make its surface adhesion ground grains of sand or foreign material and affects screw thread and screw, even destroy screw thread; High-strength steel washer 3 is inserted in high-strength big six-angle spiral 1, has the end of chamfering should be towards high strength heavy series hexagon nut 2 supporting surfaces; During the twisting pretension, should apply moment at high strength heavy series hexagon nut 2, and must use the torque wrench construction; During the twisting pretension, in strict accordance with the moment values standard operation of fitting operation regulation and stipulation.
Claims (2)
1. Large-diameter Steel structure high strength bolt connection pairs, contain high-strength bolt (1), high strength nut (2), high-strength steel washer (3), the first auxiliary connection (4) and the second auxiliary connection (5), it is characterized in that high-strength steel washer (3) diameter is M36-M64, high-strength steel washer (3) end face chamfering is 45 °; High-strength bolt (1) passes the through hole of the first auxiliary connection (4) and the second auxiliary connection (5), and the afterbody cover has high-strength steel washer (3) and fastening high strength nut (2).
2. described a kind of Large-diameter Steel structure high strength bolt connection pairs according to claim 1 is characterized in that high-strength bolt (1) end is large hexagon head, or is large four angle heads; The fastening high strength nut of afterbody (2) is heavy series hexagon nut, or is large four angle head nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203232308U CN202789339U (en) | 2012-07-05 | 2012-07-05 | Major diameter steel structure high-strength bolt connection pairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203232308U CN202789339U (en) | 2012-07-05 | 2012-07-05 | Major diameter steel structure high-strength bolt connection pairs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789339U true CN202789339U (en) | 2013-03-13 |
Family
ID=47816614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203232308U Expired - Lifetime CN202789339U (en) | 2012-07-05 | 2012-07-05 | Major diameter steel structure high-strength bolt connection pairs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789339U (en) |
-
2012
- 2012-07-05 CN CN2012203232308U patent/CN202789339U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 743000 No. 8 Xincheng Avenue, Circular Economy Park, Dingxi City, Gansu Province Patentee after: DINGXI SHARP HIGH STRENGTH BOLT LTD. Address before: 743000 No. 8 Xincheng Avenue, Circular Economy Park, Dingxi City, Gansu Province Patentee before: DINGXI HIGH STRENGTH SCREWS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |