CN202431712U - Double-nut check bolt pair - Google Patents
Double-nut check bolt pair Download PDFInfo
- Publication number
- CN202431712U CN202431712U CN201120572281XU CN201120572281U CN202431712U CN 202431712 U CN202431712 U CN 202431712U CN 201120572281X U CN201120572281X U CN 201120572281XU CN 201120572281 U CN201120572281 U CN 201120572281U CN 202431712 U CN202431712 U CN 202431712U
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- Prior art keywords
- nut
- bolt
- double
- utility
- model
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- 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
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Abstract
The utility model discloses a double-nut check bolt pair which comprises a bolt. A first nut and a second nut which are matched with the bolt is arranged on the bolt, contact faces of the first nut and the second nut are helical toothed face and meshed mutually, and the upper angles of the helical toothed face are larger than the thread angle of the bolt. The double-nut check bolt pair has the advantages of simple structure, easiness to manufacture, avoidance of loosing caused by vibration and power load, easiness to mount and demount, high safety, reusability and easiness to popularize.
Description
Technical field
The utility model relates to technical field of fastening, relates in particular to a kind of pairs of anti-loose nut bolt pair.
Background technique
Fastening piece is to be fastenedly connected to use and use one type of mechanical parts very widely.On various machineries, equipment, vehicle, boats and ships, railway, bridge, building etc., can see fastening piece miscellaneous; Existing fastening piece is that plain bolt is secondary for plain bolt is connected fastening mode with nut mostly; It is fastening to do connection with the bolt pair, and the Structural Hardware product for will often tearing the fortune assembling open provides convenience in dismounting.But, also have after quite a few structure dress generally no longer dismounting; Owing to adopt the secondary connection of the plain bolt that does not have anti-loosening measure fastening; Through wind and weather, year in and year out, the corrosion of metal surface or in wind and rain naturally vibrations reason, nut loosening it is often arranged; Also have in the machinery and building structure under fierce oscillating load effect; The secondary loosening problem of plain bolt is very serious; Often also can cause major accident; If not discovery maintenance in time causes connecting insecure or bolt and nut comes off. serious accident takes place, and causes immeasurable loss.
Summary of the invention
It is not enough be to solve existing technology, the utility model provide a kind of simple in structure, easy to manufacture, prevent because that vibration and dynamic load cause is loosening, installing/dismounting is easy, Safety performance good, pairs of anti-loose nut bolt reusable, that be prone to promote is secondary.
The utility model adopts following technological scheme: the pairs of anti-loose nut bolt is secondary, comprises bolt, and it is characterized in that: described bolt is provided with two nut nuts one with matching, nut two.
The face that described two nut nuts one, nut two contact is designed to pitch face, and is meshing with each other; Described pitch face upper angle is greater than the angle of thread of bolt.
The utility model when single nut is fastening in the existing technology because mechanical vibration cause the shortcoming of pressure surge; Be designed to double nut; If what upwards the following nut of vibration pasted is tighter, if instead the subsides of the nut above the vibration downwards is tighter, total load is constant all the time; Double nut makes and produces the additional pressure that does not change with external load in the screw pair, always and have friction torque, can prevent that nut from rotating relative to bolt; Increased the axial tensile strength of bolt and the effect of becoming flexible of preventing has been arranged.
Further, described two contacted faces of nut are designed to pitch face, and are meshing with each other; Described pitch face upper angle is greater than the angle of thread of bolt; When bolt is elongated because of mechanical vibration, when nut will rotate loosening trend thereupon, only allow the changing of the relative positions relatively between the pitch face of two nuts contacts; Produce lifting tension force, thereby reach perfect locking effect.
The secondary advantage of the utility model pairs of anti-loose nut bolt is: simple in structure, easy to manufacture, prevent because that vibration and dynamic load cause is loosening, installing/dismounting is easy, Safety performance good, reusable, be prone to promote.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Sequence number among the figure: 1, bolt; 2, nut one; 3, nut two.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
According to shown in Figure 1, the utility model pairs of anti-loose nut bolt is secondary, comprises bolt 1, and described bolt 1 is provided with two nut nuts 1 with matching, nut 23; Described two nut nuts 1, nut 23 contacted faces are designed to pitch face, and are meshing with each other; Described pitch face upper angle is greater than the angle of thread of bolt 1.
When the utility model was installed, the nut of the inside pine was earlier twisted, and the nut of tightening the outside again holds out against the nut of the inside, so the nut of outside can suitably be thickeied to bear bigger moment of torsion.
More than specified the mode of execution of the utility model, but this instance of just lifting for the ease of understanding should not be considered to be the restriction to the utility model scope.Equally; Any person of ordinary skill in the field all can be according to the technological scheme of the utility model and the description of preferred embodiment thereof; Make various possible being equal to and change or replacement, but all these changes or replacement all should belong to the protection domain of the utility model claim.
Claims (2)
1. the pairs of anti-loose nut bolt is secondary, comprises bolt ⑴, and it is characterized in that: described bolt ⑴ is provided with two nut nut one ⑵ with matching, nut two ⑶.
2. pairs of anti-loose nut bolt according to claim 1 is secondary, and it is characterized in that: described two nut nut one ⑵, the contacted face of nut two ⑶ are designed to pitch face, and are meshing with each other; Described pitch face upper angle is greater than the angle of thread of bolt ⑴.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120572281XU CN202431712U (en) | 2011-12-31 | 2011-12-31 | Double-nut check bolt pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120572281XU CN202431712U (en) | 2011-12-31 | 2011-12-31 | Double-nut check bolt pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202431712U true CN202431712U (en) | 2012-09-12 |
Family
ID=46781159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120572281XU Expired - Fee Related CN202431712U (en) | 2011-12-31 | 2011-12-31 | Double-nut check bolt pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202431712U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016498A (en) * | 2012-12-03 | 2013-04-03 | 佟学武 | Method for preventing nuts from being loosened and falling off by buckling left-handed nut and right-handed nut into a whole |
| CN108591219A (en) * | 2018-06-29 | 2018-09-28 | 浙江谊科建筑技术发展有限公司 | A kind of locking adjustable pin |
| CN112443710A (en) * | 2019-09-03 | 2021-03-05 | 大连中和聚能自动控制***有限公司 | Steel pipe joint capable of being independently disassembled and repeatedly used |
-
2011
- 2011-12-31 CN CN201120572281XU patent/CN202431712U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016498A (en) * | 2012-12-03 | 2013-04-03 | 佟学武 | Method for preventing nuts from being loosened and falling off by buckling left-handed nut and right-handed nut into a whole |
| CN108591219A (en) * | 2018-06-29 | 2018-09-28 | 浙江谊科建筑技术发展有限公司 | A kind of locking adjustable pin |
| CN112443710A (en) * | 2019-09-03 | 2021-03-05 | 大连中和聚能自动控制***有限公司 | Steel pipe joint capable of being independently disassembled and repeatedly used |
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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: 20120912 Termination date: 20171231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |