CN201475138U - Bolt connection anti-loose tightening mechanism of wind generating set - Google Patents
Bolt connection anti-loose tightening mechanism of wind generating set Download PDFInfo
- Publication number
- CN201475138U CN201475138U CN2009203064546U CN200920306454U CN201475138U CN 201475138 U CN201475138 U CN 201475138U CN 2009203064546 U CN2009203064546 U CN 2009203064546U CN 200920306454 U CN200920306454 U CN 200920306454U CN 201475138 U CN201475138 U CN 201475138U
- Authority
- CN
- China
- Prior art keywords
- bolt
- generating set
- wind generating
- tightening mechanism
- nut
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Wind Motors (AREA)
Abstract
The utility model relates to a bolt connection anti-loose tightening mechanism of a wind generating set, comprising at least two connecting pieces, and the connecting pieces are connected and fastened into one body by a bolt and a nut, and the bolt is a high-intensity bolt; the bolt connection anti-loose tightening mechanism of the wind generating set is characterized in that: a screw hole of the nut is a screw hole with spiralock screw threads, a wedge-shaped inclined plane with 30 degrees is formed at the tooth bottom position of the spiralock screw threads. The bolt connection anti-loose tightening mechanism of the wind generating set can prevent the loose of the high-intensity bolt on the wind generating set, so as to avoid heavy or disruptive accidents, reduce the times of moment repeated driving when in maintenance and reduce the maintaining cost of a fan; the problem that the wind generating set is connected with the overlong screw hole is solved, the material utilization amount is effectively reduced and the production cost is reduced.
Description
Technical field
The utility model relates to a kind of wind power generating set bolt and connects locking retention mechanism.
Background technique
At present, it is with high-strength bolt (10.9 that the wind power generating set high-strength bolt of generally acknowledging connects, 8.8 grade bolt) and the high strength nut (8 grades, 10 grades of nuts) that has common coarse thread (GB/T196-2003) connect connected piece, apply moment of torsion according to design load simultaneously and guarantee fastening.But common coarse thread gets loose when being subjected to high vibration easily, causes fastening inefficacy, causes parts or complete device to damage, disintegrate, even causes and lead to a disaster.So in the service life in 20 years of wind power generating set, need check the fastening situation of a bolt at set intervals, and moment of strike-on, the human cost that blower fan is safeguarded increased.
The model utility content
The purpose of this utility model is to provide a kind of wind power generating set bolt that is difficult for getting loose to connect locking retention mechanism.
The technical solution of the utility model is: it comprises at least two links, described link fastens as one by bolt and nut connection, bolt is a high-strength bolt, and the screw of nut is the screw that has the Shi Bilao screw thread, and there is one 30 ° wedge shape inclined-plane the tooth bottom of Shi Bilao screw thread.
The utility model can prevent that the high-intensity fasteners on the wind power generating set from getting loose, the generation of therefore former thereby the great or subversiveness accident that causes of prevention, and reduce the number of times of strike-on moment when safeguarding, reduce the maintenance cost of blower fan; Solved wind power generating set and connected the long problem of screw, can effectively reduce material consumption, reduced production costs.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural representation.
Fig. 2 is the Shi Bilao of an I place screw thread enlarged diagram among Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
With reference to Fig. 1,2, present embodiment comprises link I1, link II2, link I1 is connected by bolt 4 and nut 3 with link II2 and fastens as one, bolt 4 is a high-strength bolt, the screw of nut 3 is the screw that has the Shi Bilao screw thread, and there is one 30 ° wedge shape inclined-plane the tooth bottom of Shi Bilao screw thread.
Fastening operating procedure:
The first step is screwed into direction to good Shi Bilao nut, and nut and bolt thread section are tightened;
In second step, in steel structure or other concerned countries standards, find the pretightening force value corresponding with bolt specification;
In the 3rd step, calculate relevant Bolt Torque value according to following formula:
T＝K*P*D
In the formula, T is a screw-down torque, and K is a moment coefficient, and P is a pre-fastening moment, and D is a bolt specification;
In the 4th step, the utilization torque spanner is screwed to the nut bolt auxiliary connection moment values that calculates.
Because there is one 30 ° wedge type inclined-plane the tooth bottom of Shi Bilao screw thread, when bolt and nut was tightened mutually, the cusp of bolt just withstood on the wedge shape inclined-plane of Shi Bilao screw thread tightly, thereby produced very big coupling mechanism force.Because the angle of thread form changes, make to be applied to contact the normal force that is produced between screw thread and become 60 ° of angles with bolt axis, rather than 30 ° of angles as regular screw threads.Therefore normal pressure is far longer than fastening pressure, and the locking frictional force that is produced has increased greatly.And load is evenly distributed on each thread engagement, the fastening performance of double-screw bolt and the intensity of screw thread have been strengthened, form the fastening effect of a kind of physics, after fundamentally having stopped wind power generating set high-strength bolt group and connecting each load parts, because of getting loose of producing of extraneous factor influence asked.
Claims (1)
1. a wind power generating set bolt connects locking retention mechanism, comprise at least two links, described link fastens as one by bolt and nut connection, bolt is a high-strength bolt, it is characterized in that, the screw of nut is the screw that has the Shi Bilao screw thread, and there is one 30 ° wedge shape inclined-plane the tooth bottom of Shi Bilao screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203064546U CN201475138U (en) | 2009-07-20 | 2009-07-20 | Bolt connection anti-loose tightening mechanism of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203064546U CN201475138U (en) | 2009-07-20 | 2009-07-20 | Bolt connection anti-loose tightening mechanism of wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475138U true CN201475138U (en) | 2010-05-19 |
Family
ID=42411385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203064546U Expired - Fee Related CN201475138U (en) | 2009-07-20 | 2009-07-20 | Bolt connection anti-loose tightening mechanism of wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819195A (en) * | 2015-04-15 | 2015-08-05 | 李延春 | Loosening-prevention type bolt |
| CN108397463A (en) * | 2018-04-02 | 2018-08-14 | 北京理工大学 | Include the anti-loosening threaded pair and checknut part of confined planes |
-
2009
- 2009-07-20 CN CN2009203064546U patent/CN201475138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819195A (en) * | 2015-04-15 | 2015-08-05 | 李延春 | Loosening-prevention type bolt |
| CN108397463A (en) * | 2018-04-02 | 2018-08-14 | 北京理工大学 | Include the anti-loosening threaded pair and checknut part of confined planes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215762735U (en) | Anti-loosening bolt | |
| CN201475138U (en) | Bolt connection anti-loose tightening mechanism of wind generating set | |
| CN202149125U (en) | Self-locking locknut assembly | |
| CN2423440Y (en) | Check bolt, locknut and washer | |
| CN104196864A (en) | Double-nut check bolt | |
| CN205423463U (en) | Self -tightening check bolt | |
| CN204437023U (en) | A kind of screw disconnecting prevention structure for set screws | |
| CN204061494U (en) | Shockproof locking Self-locking screw and shockproof loosening-preventing self-lock screw-thread fastener assembly | |
| CN211623929U (en) | Elastic thread anti-loosening fastening device | |
| CN215409665U (en) | Check bolt assembly | |
| CN211901243U (en) | Locknut structure with screw pitch difference | |
| CN216768033U (en) | Double-nut combined self-locking anti-loosening structure | |
| CN201874958U (en) | Locking nut | |
| CN202431712U (en) | Double-nut check bolt pair | |
| CN2921415Y (en) | Self-locking helix screw-thread fastening | |
| CN2649852Y (en) | Locknut | |
| CN213478905U (en) | Composite double-nut anti-loose bolt | |
| CN211550227U (en) | Anti-loosening nut | |
| CN111120494A (en) | Locknut structure with screw pitch difference | |
| CN204384743U (en) | A kind of tower machine standard knot connection screw thread pair | |
| CN201582278U (en) | Self-locking bolt | |
| CN201224849Y (en) | Screw thread connection structure for high fatigue strength steel rail | |
| CN202088913U (en) | Forged rotary single-lug and double-lug device | |
| CN202971639U (en) | Anti-loose shock resistance coupler | |
| CN215333887U (en) | Novel locking fastening bolt structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20170720 |