CN202560753U - Titanium alloy bolt - Google Patents
Titanium alloy bolt Download PDFInfo
- Publication number
- CN202560753U CN202560753U CN2012202528526U CN201220252852U CN202560753U CN 202560753 U CN202560753 U CN 202560753U CN 2012202528526 U CN2012202528526 U CN 2012202528526U CN 201220252852 U CN201220252852 U CN 201220252852U CN 202560753 U CN202560753 U CN 202560753U
- Authority
- CN
- China
- Prior art keywords
- bolt
- titanium alloy
- thread
- screw rod
- utility
- 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
- Connection Of Plates (AREA)
Abstract
本实用新型涉及一种钛合金螺栓，特别是一种TB3钛合金螺栓螺纹形式变更，属于螺栓结构技术领域。一种钛合金螺栓，包括螺杆和螺帽，其特别之处在于螺杆上螺纹形式为MJ形式，螺纹牙底尾端为圆角，这种结构可降低螺栓的应力集中，提高螺栓耐疲劳性能。本实用新型结构设计合理，螺栓耐疲劳性能高，相比普通的螺纹牙底为尖角的M螺纹可提高30%的耐疲劳性能，在同种受力情形下可以将螺栓直径减小，从而提高航天器和飞机的承载能力，且节省钛合金材料。
The utility model relates to a titanium alloy bolt, in particular to a thread form modification of a TB3 titanium alloy bolt, which belongs to the technical field of bolt structure. A titanium alloy bolt, including a screw rod and a nut, is special in that the thread form on the screw rod is in MJ form, and the end of the thread bottom is rounded. This structure can reduce the stress concentration of the bolt and improve the fatigue resistance of the bolt. The utility model has reasonable structural design and high fatigue resistance of the bolts. Compared with the M thread with a sharp-angled common thread bottom, the fatigue resistance can be improved by 30%, and the diameter of the bolt can be reduced under the same stress situation, thereby Improve the bearing capacity of spacecraft and aircraft, and save titanium alloy materials.
Description
Technical field
The utility model relates to a kind of titanium alloy bolt, and particularly a kind of TB3 titanium alloy bolt thread form change belongs to the bolt arrangement technical field.
Background technique
The titanium alloy bolt is used in space flight, aviation, fatigue behaviour is had relatively high expectations, if adopt the regular screw threads bolt; For design, can only the diameter of bolt be strengthened, so that its fatigue behaviour reaches designing requirement; This will cause astrovehicle and aircraft deadweight to increase, thereby cause lifting capacity to reduce.Present used TB3 titanium alloy bolt thread is common M screw thread, and this Bottom of Thread is a wedge angle, has stress to concentrate at this place; And TB3 titanium alloy counter stress is concentrated stronger receptance is arranged; So cause the fatigue resistance of bolt poor, under the environment of dither, occur fatigue fracture easily and lost efficacy.
Summary of the invention
The purpose of the utility model just is to provide a kind of reasonable in design, titanium alloy bolt that fatigue performance is high, with low cost.
The utility model is realized through following technological scheme:
A kind of titanium alloy bolt comprises screw rod and nut, and its specialization is that thread forms is the MJ form on the screw rod 1, and Bottom of Thread tail end 1-1 is a fillet, and this structure can reduce the stress of bolt to be concentrated, and improves the bolt fatigue performance.
Said Bottom of Thread tail end 1-1 is designed to circular arc, and radius of arc is 0.10825～0.18042 times a thread pitch.
The utility model titanium alloy bolt; Reasonable in design; The bolt fatigue performance is high, and the M screw thread of comparing common Bottom of Thread and be wedge angle can improve 30% fatigue performance, under stressed situation of the same race, can the diameter of bolt be reduced; Thereby improve the bearing capacity of astrovehicle and aircraft, and save titanium alloy material.
Description of drawings
Fig. 1: the utility model titanium alloy bolt arrangement schematic representation;
Fig. 2: prior art titanium alloy bolt wedge angle Bottom of Thread tail end structural representation;
Fig. 3: the utility model titanium alloy bolt fillet Bottom of Thread tail end structural representation;
Among the figure: 1, screw rod, 1-1, Bottom of Thread tail end.
Embodiment
Following with reference to accompanying drawing, provide the embodiment of the utility model, be used for the formation of the utility model is further specified.
A kind of titanium alloy bolt of present embodiment comprises screw rod and nut, and thread forms is the MJ form on its screw rod 1, and Bottom of Thread tail end 1-1 is a fillet, can reduce the stress of bolt like this and concentrate, and improves the bolt fatigue performance.
Bottom of Thread tail end 1-1 is designed to circular arc, and radius of arc is 0.10825～0.18042 times a thread pitch.
The titanium alloy bolt is used in space flight, aviation, fatigue behaviour is had relatively high expectations, if adopt the regular screw threads bolt, for design; Can only the diameter of bolt be strengthened, so that its fatigue behaviour reaches designing requirement, this will cause astrovehicle and aircraft deadweight to increase; Thereby cause lifting capacity to reduce, adopt the titanium alloy bolt of present embodiment, change the Bottom of Thread wedge angle into fillet; Reasonable in design, the bolt fatigue performance is high, and the M screw thread of comparing common Bottom of Thread and be wedge angle can improve the fatigue performance of bolt 30%; Under stressed situation of the same race, can the diameter of bolt be reduced, thus the bearing capacity of raising astrovehicle and aircraft, and save titanium alloy material.
Claims (2)
1. a titanium alloy bolt comprises screw rod and nut, it is characterized in that it is the MJ form that screw rod (1) is gone up thread forms, and Bottom of Thread tail end (1-1) is a fillet.
2. according to the described a kind of titanium alloy bolt of claim 1, it is characterized in that said Bottom of Thread tail end (1-1) is designed to circular arc, radius of arc is 0.10825～0.18042 times a thread pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202528526U CN202560753U (en) | 2012-05-31 | 2012-05-31 | Titanium alloy bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202528526U CN202560753U (en) | 2012-05-31 | 2012-05-31 | Titanium alloy bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202560753U true CN202560753U (en) | 2012-11-28 |
Family
ID=47210413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202528526U Expired - Fee Related CN202560753U (en) | 2012-05-31 | 2012-05-31 | Titanium alloy bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202560753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-05-31 CN CN2012202528526U patent/CN202560753U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202560753U (en) | Titanium alloy bolt | |
| CN202370968U (en) | Double-head screw rod | |
| CN202220788U (en) | Double-headed bolt | |
| CN202914489U (en) | Composite bolt | |
| CN202441693U (en) | Titanium alloy short-thread ending bolt for aerospace | |
| CN202326908U (en) | Shackle with counter bores | |
| CN202273964U (en) | Pull ring connecting piece | |
| CN202544088U (en) | Steel jacket locking mechanism for steel structure building | |
| CN203585024U (en) | Double-thread releasing screw bolt assembly | |
| CN203686115U (en) | Pneumatic tool inner main piston reinforcing structure | |
| CN103466496B (en) | A kind of aircraft jack-up device | |
| CN102555662A (en) | Wheel mounting structure | |
| CN202251326U (en) | Bolt with gasket | |
| CN202673938U (en) | Positioning installation screw bolt with controlled torque | |
| CN103644185B (en) | Hold curved bolt fastening structure | |
| CN204082843U (en) | A kind of stone bolt | |
| CN202579559U (en) | Connecting bolt | |
| CN203532472U (en) | Internal thread multi-segment type nut | |
| CN203157592U (en) | Bicycle hub | |
| CN202914490U (en) | Composite bolt | |
| CN207814162U (en) | It is a kind of that there is round and square cross-sectional shape reducing bolt | |
| CN202484028U (en) | Hexagon socket screw with gasket | |
| CN201687494U (en) | Reducing anchor rod | |
| CN202157421U (en) | Gusset plate mechanism for steel structure | |
| CN202867535U (en) | Connecting rod of filling machine |
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 |
Granted publication date: 20121128 Termination date: 20150531 |
|
| EXPY | Termination of patent right or utility model |