CN201187507Y - Flexible high strength bolt - Google Patents
Flexible high strength bolt Download PDFInfo
- Publication number
- CN201187507Y CN201187507Y CNU2008200866254U CN200820086625U CN201187507Y CN 201187507 Y CN201187507 Y CN 201187507Y CN U2008200866254 U CNU2008200866254 U CN U2008200866254U CN 200820086625 U CN200820086625 U CN 200820086625U CN 201187507 Y CN201187507 Y CN 201187507Y
- Authority
- CN
- China
- Prior art keywords
- strength bolt
- flexible high
- buffer groove
- shaped
- strength
- 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 - Lifetime
Links
Abstract
The utility model overcomes the defects in the prior art and provides a flexible high-strength bolt with high fluctuation carrying capacity, high impact resistance and high damage resistance, which comprises a body, wherein a buffering groove is arranged at the periphery of the rod of the body. The flexible high-strength bolt can reduce the rigidity of the flexible high-strength bolt as much as possible on the premise of keeping the strength thereof, and improve the flexibility and fluctuation carrying capacity of the flexible high-strength bolt; and the friction-type and bearing-type combined design proposal is adopted, so as to improve the instantaneous strong impact resistance of the flexible high-strength bolt. Compared with the prior art, the flexible high-strength bolt has the advantages of high fluctuation carrying capacity, strong impact resistance and high damage resistance.
Description
Technical field
The utility model relates to a kind of bolt, relates in particular to flexible high-strength bolt.
Background technique
Present widely used scyewed joint fastening piece, because under vibration and varying load etc. act on, easily cause the fastening piece phenomenon that gets loose, solving fastener locking at present, to take off technological means more, but the part loosing Prevention Technology remains in some defectives, and has the low problems such as problem of intensity.Along with the quick stable development of national economy, China Railway already develops and is exceedingly fast, for adapting to the development of China Railway industry, be bullet train reputation in the world, win glory for the motherland, Nan Che group of the Ministry of Railways requires the required high strength of my company's research and development bullet train, high tenacity, impact-resistant flexible high-strength bolt.
Summary of the invention
Technical problem to be solved in the utility model is the present situation at prior art, and a kind of have fluctuation bearing capacity height, impact resistant power is strong, survivability is good flexible high-strength bolt are provided.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: flexible high-strength bolt, comprise body, and wherein, the bar portion periphery of body is shaped on buffer groove.Adopt this structure to reduce the rigidity of bolt, improved the flexibility of bolt, so claim flexible high-strength bolt.Can bear operating horizontal and vertical oscillating load, and the design of adopting pressure-bearing type and frictional to combine makes flexible high-strength bolt have to bear the ability of high circumferential load when braking at a high speed.
For optimizing technique scheme, the technical measures of taking also comprise: the periphery between the bar portion end of buffer groove and body is shaped on screw thread.
The cross section of buffer groove is a waist shape.
The cross section of buffer groove is that indent is trapezoidal.
Buffer groove length longitudinally accounts for this body rod minister degree 1/6 to 1/3.
This body rod portion is shaped on the end tolerance directly of the place, thin footpath of groove and screw thread less than 0.25.
The threaded end of body runs through along its axis normal and is shaped on through hole.
Because the technical program has adopted the body side to be shaped on buffer groove, periphery between buffer groove and the body tip is shaped on screw thread, can effectively absorb fluctuation impacts, under the preceding topic that keeps flexible high-strength bolt intensity, reduce flexible high-strength bolt stiffness as far as possible, improve flexible high-strength bolt flexibility, make flexible high-strength bolt strengthen the ability of bearing fluctuating load; The design proposal that adopts frictional and pressure-bearing type to combine improves the resistivity of flexible high-strength bolt to the moment thump.The tensile strength that makes flexible high-strength bolt is 1040MPa to 1220MPa; The disproportional elongation stress is 940Mpa to 1100Mpa; Elongation after fracture is greater than 9%; Reduction of cross sectional area is greater than 44%.The utility model is a kind of have fluctuation bearing capacity height, impact resistant power is strong, survivability is good flexible high-strength bolt.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Figure grade explanation: body 1, buffer groove 11, through hole 12, screw thread 13.
Embodiment: as shown in Figure 1, flexible high-strength bolt comprises body 1, it is characterized in that: the bar portion periphery of body 1 is shaped on buffer groove 11.Can bear operating horizontal and vertical oscillating load, and the design of adopting pressure-bearing type and frictional to combine makes flexible high-strength flexible high-strength bolt have to bear the ability of high circumferential load when braking at a high speed.
Periphery between the bar portion end of buffer groove 11 and body 1 is shaped on screw thread 13.The cross section of buffer groove 11 is a waist shape.The cross section of buffer groove 11 is that indent is trapezoidal.Buffer groove 11 length longitudinally accounts for body 1 bar minister degree 1/6 to 1/3,1/5 of the preferred body of rod length of present embodiment.Body 1 bar portion is shaped on the end tolerance directly of the place, thin footpath at groove 11 places and screw thread 13 less than 0.25.Rib-loop 13 ends of body 1 run through along its axis normal and are shaped on through hole 12.The fitting pin fitting plays fixing dual fail-safe effect.
The tensile strength of flexible high-strength bolt is 1040MPa to 1220MPa; The disproportional elongation stress of flexible high-strength bolt is 940Mpa to 1100Mpa.
The elongation after fracture of flexible high-strength bolt is more than or equal to 9%; The reduction of cross sectional area of flexible high-strength bolt is more than or equal to 44%.
Because the technical program has adopted the body side to be shaped on buffer groove, periphery between buffer groove and the body tip is shaped on screw thread, can effectively absorb fluctuation impacts, under the preceding topic that keeps flexible high-strength bolt intensity, reduce flexible high-strength bolt stiffness as far as possible, improve flexible high-strength bolt flexibility, make flexible high-strength bolt strengthen the ability of bearing fluctuating load; The design proposal that adopts frictional and pressure-bearing type to combine improves the resistivity of flexible high-strength bolt to the moment thump.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (7)
1, flexible high-strength bolt comprises body (1), it is characterized in that: the bar portion periphery of described body (1) is shaped on buffer groove (11).
2, flexible high-strength bolt according to claim 1 is characterized in that: the periphery between the bar portion end of described buffer groove (11) and described body (1) is shaped on screw thread (13).
3, flexible high-strength bolt according to claim 2 is characterized in that: the cross section of described buffer groove (11) is a waist shape.
4, flexible high-strength bolt according to claim 2 is characterized in that: the cross section of described buffer groove (11) is that indent is trapezoidal.
5, according to claim 3 or 4 described flexible high-strength bolts, it is characterized in that: described buffer groove (11) length longitudinally accounts for described body (1) bar minister degree 1/6 to 1/3.
6, flexible high-strength bolt according to claim 5 is characterized in that: described body (1) bar portion is shaped on the end tolerance directly of place, thin footpath that described groove (11) locates and described screw thread (13) less than 0.25.
7, flexible high-strength bolt according to claim 6 is characterized in that: the screw thread (13) of described body (1) end runs through along its axis normal and is shaped on through hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200866254U CN201187507Y (en) | 2008-04-30 | 2008-04-30 | Flexible high strength bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200866254U CN201187507Y (en) | 2008-04-30 | 2008-04-30 | Flexible high strength bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187507Y true CN201187507Y (en) | 2009-01-28 |
Family
ID=40310528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200866254U Expired - Lifetime CN201187507Y (en) | 2008-04-30 | 2008-04-30 | Flexible high strength bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187507Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454677A (en) * | 2010-10-26 | 2012-05-16 | 中国北车集团大同电力机车有限责任公司 | Bolt coupling device |
| CN105508383A (en) * | 2016-01-07 | 2016-04-20 | 太仓市德浩紧固件有限公司 | Slender waist bolt |
-
2008
- 2008-04-30 CN CNU2008200866254U patent/CN201187507Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454677A (en) * | 2010-10-26 | 2012-05-16 | 中国北车集团大同电力机车有限责任公司 | Bolt coupling device |
| CN102454677B (en) * | 2010-10-26 | 2014-03-19 | 中国北车集团大同电力机车有限责任公司 | Bolt coupling device |
| CN105508383A (en) * | 2016-01-07 | 2016-04-20 | 太仓市德浩紧固件有限公司 | Slender waist bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: YUYAO JIEYU MACHINERY CO., LTD. Assignor: Xu Yutang Contract record no.: 2012330000137 Denomination of utility model: Flexible high strength bolt Granted publication date: 20090128 License type: Exclusive License Record date: 20120401 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090128 |