CN204059108U - Rail fastener system self-tightening type check bolt - Google Patents
Rail fastener system self-tightening type check bolt Download PDFInfo
- Publication number
- CN204059108U CN204059108U CN201420246237.3U CN201420246237U CN204059108U CN 204059108 U CN204059108 U CN 204059108U CN 201420246237 U CN201420246237 U CN 201420246237U CN 204059108 U CN204059108 U CN 204059108U
- Authority
- CN
- China
- Prior art keywords
- thread segment
- ailhead
- nail bar
- internal thread
- threaded
- 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
Abstract
Rail fastener system self-tightening type check bolt, with the contact force of strengthening stud and service sleeve, effectively improves the action effect of fastener.This bolt is made up of ailhead and nail bar, and nail bar has the contrary upper thread segment of rotation direction, lower thread segment, and ailhead then has external thread section, internal thread segment, and ailhead internal thread segment is formed with thread segment on nail bar and is threaded; Under nail bar, thread segment is formed with internal thread segment under service sleeve and is threaded, and ailhead external thread section is formed with internal thread segment on service sleeve and is threaded.
Description
Technical field
The utility model relates to railway fastener system, particularly a kind of rail fastener system self-tightening type check bolt.
Background technology
Fastener system is as one of the vitals of track structure, and it is large, with high content of technology not only to lay quantity, and the construction cycle is long, needs to carry out continuing research and development and improvement to it.Along with the increase of China railways freight volume, axle heavily improves constantly, and the stress of fastener is aggravated further, and especially in heavily loaded location, the lax of bolt is the key factor affecting fastener system performance.Although bolt when mounted indices all meets the requirements, due under the effect of impact force of train, make to occur gap between bolt and the contact surface of service sleeve, the pretightning force of spring makes bolt have the trend outwards screwed out simultaneously.In the course of time, just can there is loosening phenomenon in bolt.Therefore, the locking research for bolt has realistic meaning.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of rail fastener system self-tightening type check bolt, with the contact force of strengthening stud and service sleeve, effectively improves the action effect of fastener.
It is as follows that the utility model solves the technical scheme that its technical problem adopts:
Rail fastener system self-tightening type check bolt of the present utility model, it is characterized in that: this bolt is made up of ailhead and nail bar, nail bar has the contrary upper thread segment of rotation direction, lower thread segment, ailhead then has external thread section, internal thread segment, and ailhead internal thread segment is formed with thread segment on nail bar and is threaded; Under nail bar, thread segment is formed with internal thread segment under service sleeve and is threaded, and ailhead external thread section is formed with internal thread segment on service sleeve and is threaded.
The beneficial effects of the utility model are, have good self-tightening anti-loosening property, effectively can improve the stability of fastener system; Structure is simple, and be easy to processing, the basis of existing railway bolt is carried out improvement processing can complete; Easy for installation, first ailhead top is screwed in nail bar during installation and then bar screw-in service sleeve will be followed closely.
Accompanying drawing explanation
This manual comprises following three width accompanying drawings:
Fig. 1 is the structural representation of the utility model rail fastener system self-tightening type check bolt;
Fig. 2 is the stereogram of ailhead part in the utility model rail fastener system self-tightening type check bolt;
Fig. 3 is the stereogram following closely bar part in the utility model rail fastener system self-tightening type check bolt;
Component name shown in figure and corresponding mark: ailhead 1, nail bar 2, service sleeve 3.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
With reference to Fig. 1, rail fastener system self-tightening type check bolt of the present utility model is made up of ailhead 1 and nail bar 2.With reference to Fig. 3, nail bar 2 has the contrary upper thread segment of rotation direction, lower thread segment.With reference to Fig. 1 and 2, ailhead 1 has external thread section, internal thread segment.With reference to Fig. 1, ailhead 1 internal thread segment is formed with thread segment on nail bar 2 and is threaded, and nail bar 2 times thread segments are formed with service sleeve 3 times internal thread segment and are threaded, and ailhead 1 external thread section is formed with internal thread segment on service sleeve 3 and is threaded.Namely ailhead 1 external thread section is identical with the rotation direction of internal thread segment on service sleeve 3, and nail bar 2 times thread segments are identical with the rotation direction of service sleeve 3 times internal thread segment, and contrary with the rotation direction of ailhead 1 external thread section, identical with the rotation direction of ailhead 1 upper internal threaded section.
With reference to Fig. 1, because the rotation direction of ailhead 1 external thread section and nail bar 2 times thread segments is different, when the trend that bolt may be caused because of external shock to produce towards certain direction turn, although ailhead 1, nail bar 2 one of them can therefore bring out loosening possibility, but because both external thread sections, lower thread segment are contrary with the rotation direction of the upper internal thread segment that correspondent section service sleeve 3 mates, lower internal thread segment, therefore the another part in both must produce the containment trend of contrary rotation direction, thus reach the locking object of self-tightening.
Some principles of the above the utility model rail fastener system self-tightening type check bolt that just explains through diagrams, be not the utility model to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the utility model is applied for.
Claims (1)
1. rail fastener system self-tightening type check bolt, it is characterized in that: this bolt is made up of ailhead (1) and nail bar (2), nail bar (2) has the contrary upper thread segment of rotation direction, lower thread segment, ailhead (1) then has external thread section, internal thread segment, and ailhead (1) internal thread segment and the upper thread segment of nail bar (2) are formed and be threaded; Under nail bar (2), thread segment is formed with internal thread segment under service sleeve (3) and is threaded, and ailhead (1) external thread section is formed with the upper internal thread segment of service sleeve (3) and is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246237.3U CN204059108U (en) | 2014-05-14 | 2014-05-14 | Rail fastener system self-tightening type check bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246237.3U CN204059108U (en) | 2014-05-14 | 2014-05-14 | Rail fastener system self-tightening type check bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204059108U true CN204059108U (en) | 2014-12-31 |
Family
ID=52200652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420246237.3U Expired - Fee Related CN204059108U (en) | 2014-05-14 | 2014-05-14 | Rail fastener system self-tightening type check bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204059108U (en) |
-
2014
- 2014-05-14 CN CN201420246237.3U patent/CN204059108U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Jizhong Inventor after: Fu Lilin Inventor after: Hu Lianjun Inventor after: Yan Hua Inventor after: Yang Jie Inventor after: Pan Zili Inventor after: Lin Hongsong Inventor after: Zhang Lei Inventor after: Zheng Xiaoyan Inventor after: Cai Wenfeng Inventor after: Li Zhongji Inventor before: Yang Jizhong Inventor before: Yan Hua Inventor before: Yang Jie |
|
| COR | Change of bibliographic data | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |