CN109441934A - A kind of device improving bolt strength - Google Patents
A kind of device improving bolt strength Download PDFInfo
- Publication number
- CN109441934A CN109441934A CN201811220821.0A CN201811220821A CN109441934A CN 109441934 A CN109441934 A CN 109441934A CN 201811220821 A CN201811220821 A CN 201811220821A CN 109441934 A CN109441934 A CN 109441934A
- Authority
- CN
- China
- Prior art keywords
- bolt
- ring set
- thin footpath
- improving
- metal material
- 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.)
- Pending
Links
- 239000007769 metal material Substances 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims abstract description 5
- 230000001070 adhesive effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 3
- 230000007704 transition Effects 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
- F16B31/06—Screwed connections specially modified in view of tensile load; Break-bolts having regard to possibility of fatigue rupture
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The present invention relates to a kind of devices for improving bolt strength, it includes bolt, it is thin footpath part in the middle part of the bolt, bolt both ends are threaded portion, further include ring set, the ring set internal diameter is matched with bolt small diameter part split-phase, the ring set outer diameter and bolt hole are clearance fit, the ring set material is composite material or metal material, and the ring set of the composite material is solidificated in bolt thin footpath part, and the ring set of the metal material and bolt thin footpath part are bonded together with anaerobic type adhesive.The present invention is completely fixed ring set together with thin rod portion due to being additionally arranged in thin rod portion, squeezes to will not generate dislocation between bolt body and bolt hole, blade bolt pretightning force is true and reliable, it is ensured that the Fatigue life cycles of bolt.After installing ring set additional, ring set and bolt hole are the clearance fit of tiny spacing, when operation, contact surface between blade and blade bearing are not easily caused to misplace, even if there is bolt fracture situation, break bolt is easy to take out and replacement.
Description
Technical field
The present invention relates to a kind of devices for improving bolt strength.
Background technique
In wind power generating set, the connection between blade and blade bearing uses the connection type of high-strength bolt.Wind
Electric blade bolt guarantees wind power blade bolt fatigue life using thin footpath structure, the thin footpath part of blade bolt and bolt hole it
Between unilateral gap it is larger, be easy to cause contact surface serious dislocation between blade and blade bearing during the installation process, in addition,
In operational process because between blade and blade bearing contact surface it is loaded sliding be also easy to cause contact surface serious dislocation.It was installing
Contact surface misplaces between blade and blade bearing in journey, easily leads to the distortion of blade bolt pretightning force or pre-tightens insufficient, reduction blade
Bolt fatigue life causes blade bolt to be frequently broken in advance in lifetime.In operational process between blade and blade bearing
Contact surface dislocation leads to blade bolt to be easily broken off and be broken rear blade bolt to take out difficult and replacement difficulty, shutdown inspection and
Long-term shut down causes huge generated energy to lose to owner, while the breaking portion of break bolt is detained in the wheel hub of rotation, meeting
The other component smashed in wheel hub causes incidental losses.
Summary of the invention
It is an object of the invention to overcome disadvantages described above, provide a kind of assembly and disassembly simply connect it is reliable economic and practical
Improve the device of bolt strength.
The technical scheme is that a kind of device for improving bolt strength comprising bolt, the bolt middle part is thin
Path portion, bolt both ends are threaded portion, further include ring set, the ring set internal diameter is matched with bolt small diameter part split-phase, the ring
It covers outer diameter and bolt hole is clearance fit, the ring set material is composite material or metal material, the ring set of the composite material
It is solidificated in bolt thin footpath part, ring set and the bolt thin footpath part of the metal material are bonded in anaerobic type adhesive
Together.
Preferably, the ring set of the metal material is made of steel strip winding.
Preferably, the ring set of the metal material is that the eccentric circular ring of split-type is spliced.
Preferably, the ring set of the metal material is to be spliced to half-open two-flap type semicircular ring.
Preferably, for the ease of installation, the thread segment at the bolt both ends and the transition portion of bolt thin footpath part are gradually
The tapering transition section of change, the in order to prevent play of ring set, the both ends tapering transition section of ring set both ends inside diameter surface and bolt
The contact portion on surface matches.
The method have the benefit that being completely fixed together due to being additionally arranged in thin rod portion with thin rod portion
Ring set squeezes to will not generate dislocation between bolt body and bolt hole, and blade bolt pretightning force is true and reliable, it is ensured that spiral shell
The Fatigue life cycles of bolt.After installing ring set additional, ring set and bolt hole are the clearance fit of tiny spacing, when operation, are not easily caused
Contact surface misplaces between blade and blade bearing, even if there is bolt fracture situation, break bolt is easy to take out and replace.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Specific embodiment
Below by conjunction with the accompanying drawings and embodiments, technical scheme of the present invention will be described in further detail.
Referring to attached drawing, a kind of device improving bolt strength comprising bolt 1 is thin footpath part in the middle part of the bolt 1,
Bolt both ends are threaded portion, further include ring set 7, and the ring set 7 is to be spliced to half-open two-flap type semicircle becket,
For the ease of installation, the thread segment at 1 both ends of bolt and the transition portion of bolt thin footpath part are the tapering transition sections of gradual change,
I.e. bolt 1 is the abnormally-structured of the both ends thread segment slightly thin similar dumbbell shape of intermediate thin rod portion, and ring set 7 is altered in order to prevent
Dynamic, the contact portion of the 7 both ends inside diameter surface of ring set and the both ends tapering transition section surface of bolt 1 matches, the ring set 1
Outer diameter and bolt hole are clearance fit, and the ring set 7 of the metal material and 1 thin footpath part of bolt are viscous with anaerobic type adhesive 6
It is connected together.When installation, ring set 7 is first sticked to the thin footpath part of bolt 1 with anaerobic type adhesive 6, then by 1 one end of bolt
It is screwed into connected piece 5, then is inserted in connector 4, is sequentially loaded into washer 3 and nut 2 on the screw thread that 1 other end of bolt exposes.
It is above one embodiment of the present invention, a preferred demonstration example.The claimed range of the present patent application
It is not only limited in the embodiment.All technical solutions equivalent with the present embodiment all belong to the scope of protection of the present invention.
Claims (8)
1. a kind of device for improving bolt strength comprising bolt, the bolt middle part are thin footpath part, and bolt both ends are screw thread
Part, which is characterized in that further include ring set, the ring set internal diameter is matched with bolt small diameter part split-phase, the ring set outer diameter and spiral shell
Keyhole is clearance fit, and the ring set material is composite material or metal material, and the ring set of the composite material is to be solidificated in spiral shell
Bolt thin footpath part, the ring set of the metal material and bolt thin footpath part are bonded together with anaerobic type adhesive.
2. a kind of device for improving bolt strength according to claim 1, which is characterized in that the ring set of the metal material
For made of steel strip winding.
3. a kind of device for improving bolt strength according to claim 1, which is characterized in that the ring set of the metal material
It is spliced for the eccentric circular ring of split-type.
4. a kind of device for improving bolt strength according to claim 3, which is characterized in that the ring set of the metal material
For what is be spliced to half-open two-flap type semicircular ring.
5. a kind of device for improving bolt strength according to claim 1, which is characterized in that the screw thread at the bolt both ends
The transition portion of section and bolt thin footpath part is the tapering transition section of gradual change, in order to prevent the play of ring set, the ring set both ends
The contact portion of the both ends tapering transition section surface of inside diameter surface and bolt matches.
6. a kind of device for improving bolt strength according to claim 2, which is characterized in that the screw thread at the bolt both ends
The transition portion of section and bolt thin footpath part is the tapering transition section of gradual change, in order to prevent the play of ring set, the ring set both ends
The contact portion of the both ends tapering transition section surface of inside diameter surface and bolt matches.
7. a kind of device for improving bolt strength according to claim 3, which is characterized in that the screw thread at the bolt both ends
The transition portion of section and bolt thin footpath part is the tapering transition section of gradual change, in order to prevent the play of ring set, the ring set both ends
The contact portion of the both ends tapering transition section surface of inside diameter surface and bolt matches.
8. a kind of device for improving bolt strength according to claim 4, which is characterized in that the screw thread at the bolt both ends
The transition portion of section and bolt thin footpath part is the tapering transition section of gradual change, in order to prevent the play of ring set, the ring set both ends
The contact portion of the both ends tapering transition section surface of inside diameter surface and bolt matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811220821.0A CN109441934A (en) | 2018-10-19 | 2018-10-19 | A kind of device improving bolt strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811220821.0A CN109441934A (en) | 2018-10-19 | 2018-10-19 | A kind of device improving bolt strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109441934A true CN109441934A (en) | 2019-03-08 |
Family
ID=65547452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811220821.0A Pending CN109441934A (en) | 2018-10-19 | 2018-10-19 | A kind of device improving bolt strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441934A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388299A (en) * | 2020-11-25 | 2021-02-23 | 洛阳双瑞风电叶片有限公司 | Wind power blade root bolt perpendicularity control tool and bolt installation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000136751A (en) * | 1998-11-02 | 2000-05-16 | Mitsubishi Heavy Ind Ltd | Long bolt steadying device |
| JP2002155919A (en) * | 2000-11-21 | 2002-05-31 | Mitsubishi Heavy Ind Ltd | Tie-bolt structure |
| CN2584914Y (en) * | 2002-12-04 | 2003-11-05 | 山西省工程机械厂 | Special connecting bolt for tower crame |
| CN204553488U (en) * | 2015-03-23 | 2015-08-12 | 南京风电科技有限公司 | A kind of removable Dogbolt |
| CN207261414U (en) * | 2017-07-10 | 2018-04-20 | 山东高强紧固件有限公司 | A kind of blade bolt component for wind-driven generator |
-
2018
- 2018-10-19 CN CN201811220821.0A patent/CN109441934A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000136751A (en) * | 1998-11-02 | 2000-05-16 | Mitsubishi Heavy Ind Ltd | Long bolt steadying device |
| JP2002155919A (en) * | 2000-11-21 | 2002-05-31 | Mitsubishi Heavy Ind Ltd | Tie-bolt structure |
| CN2584914Y (en) * | 2002-12-04 | 2003-11-05 | 山西省工程机械厂 | Special connecting bolt for tower crame |
| CN204553488U (en) * | 2015-03-23 | 2015-08-12 | 南京风电科技有限公司 | A kind of removable Dogbolt |
| CN207261414U (en) * | 2017-07-10 | 2018-04-20 | 山东高强紧固件有限公司 | A kind of blade bolt component for wind-driven generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388299A (en) * | 2020-11-25 | 2021-02-23 | 洛阳双瑞风电叶片有限公司 | Wind power blade root bolt perpendicularity control tool and bolt installation method |
| CN112388299B (en) * | 2020-11-25 | 2022-07-08 | 洛阳双瑞风电叶片有限公司 | Wind power blade root bolt perpendicularity control tool and bolt installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190308 |