CN207454501U - Check bolt nut structure assembly - Google Patents
Check bolt nut structure assembly Download PDFInfo
- Publication number
- CN207454501U CN207454501U CN201721630908.6U CN201721630908U CN207454501U CN 207454501 U CN207454501 U CN 207454501U CN 201721630908 U CN201721630908 U CN 201721630908U CN 207454501 U CN207454501 U CN 207454501U
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- nut
- bolt
- connector
- connected body
- thread
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Abstract
The utility model is related to a kind of check bolt nut structure assemblies, and including connector and connected body, connector and connected body are respectively arranged with through hole, and connector is connected with connected body by screw bolt and nut, and the outer surface of the nut is periphery；The outer circumference surface of nut is provided with external screw thread；Externally threaded rotation direction and nut inner thread it is oppositely oriented；The outer surface of the end of one end of nut is hexagon or quadrangle；Nut external screw thread is connected with the internal thread of locking nut.The utility model check bolt nut structure assembly, simple in structure, easy for assemble or unload, manufacture is at low cost, is widely used, effectively prevents nut loosening.
Description
Technical field
It is that be related to a kind of check bolt nut structure total specifically the utility model is related to a kind of bolt fastening structure
Into.
Background technology
The main reason for radial load is bolt connection loosening.May be loosened by the bolt-connection of responsive to axial force may not also
It loosens, but the bolt-connection acted on by radial load is certain to loosen when radial direction exciting force reaches a certain level.Bolt-connection
Pre- next, nut will be in radial-expansion condition under the action of nut radial expansion force caused by pretightning force, when extraneous footpath
When being passed to and reache a certain level to power, the voluntarily balance of nut radial expansion force will be destroyed, promote nut radial-play, and then
Make along the confficient of static friction of helix tangential direction to reduce at threaded engagement or vanishing, equivalent friction angle reduce or be zero, pine
Dynamic torque is close to zero or is negative value, and nut, which will loosen, to turn round.
Meanwhile gap is another main cause between internal thread and external screw thread.Standard thread is mostly common using single line
Screw thread, (1 ° 40 '~3 ° 30 ') equivalent friction angles (6.5 °~10.5 °) for being less than screw pair of lead angle, therefore couple spiral shell
Line can meet condition of self-locking, under certain pretightning force effect, will not generally loosen.But screw thread pair is typically clearance fit,
By taking the fine thread of M30 × 2 as an example：The pitch diameter of thread of bolt is 28.701mm, and the pitch diameter of thread of nut is 28.701mm, and screw thread joins
Average gap values are connect as 0.1315mm, maximal clearance value 0.244mm.Clearance fit is conducive to screw thread manufacture and installation, but influences
Anti-loosing effect.In addition, the microscopic detritus and particle of thread surface can be mixed between inside and outside tooth gap, similar kollag is made
With under vibration, impact and alternate load effect, thread connection pair is inevitably present device for elimination of axial-and radial-play, inside and outside spiral shell
Frictional resistance between line is present with instantaneous reduce and even disappears.This phenomenon is repeated several times, and reciprocation ultimately results in connection
It loosens.
Current screw retention method has following several：
Double nut is locking (pairs of anti-loose nut structure)：After two nuts tighten top, generation one is attached between them
Add to pushing up power, generate larger nut radial expansion force jointly to top power and pretightning force, and away from extraneous radial load, therefore nut
It is not easy to turn round, but it is noted that this additional top power competence exertion anti-loosing effect must be generated between two nuts.
The stress of pairs of anti-loose nut structure is more suitable with P1=0.2P, P2=0.8P.Wherein P1 is screw rod pair
The pulling force of locking nut (nut on non-bearing surface is known as locking nut), for screw rod, to clamp nut, (work supports P2
Nut on face is known as clamp nut) pulling force, P be screw rod given pretightning force, so clamp nut should thickness, locking
Nut should be thinner.
" inverse rotation direction double nut " (belonging to double nut)：Bolt be compounded in by left-handed and two kinds of helixes of dextrorotation it is same
On section thread segment, existing left hand thread has right-handed thread again.Clamp nut and locking nut are the nuts of two kinds of different rotation directions, are made
Used time first pre-tightens clamp nut, then locking nut is pre-tightened.In the case of vibration, impact, clamp nut, which has, to be loosened
Trend, but since the pine of clamp nut moves back the tightening direction that direction is locking nut, the tightening of locking nut prevents tight
Gu the pine of nut moves back, cause clamp nut that can not loosen.
" applying must be firm " screw thread：The difference of Spiralock nuts and standard nut is the conical surface for having one 30 ° on its core diameter of thread,
Tightly 30 ° of conical surfaces of wedge people internal thread root of the tooth, the very big radial direction coupling mechanism force of generation have nut very strong to externally threaded crest
The ability of oscillation crosswise is resisted, and this oscillation crosswise is the main reason for causing thread looseness.
It is locking to store more elastic deformation energy realizations：(1) length of bolt, the elastic elongation after bolt loading are increased
Amount is directly proportional to pretightning force and bolt length, is inversely proportional with the sectional area of bolt, the elastic elongation amount of bolt is bigger, anti-loosing effect
Better；(2) using Hydraulic stopping nut, using the pretightning force for increasing bolt-connection, make high-strength bolt that elasticity axially occur
It deforms and keeps tensional state, the internal stress generated by bolt flexible deformation compresses nut, to reach locking purpose.
There is also spring washer, Tension Nut, self-locking nut, longitudinal grooved nut, locking, the punching point rivetings of bonding etc..
Or anti-loose method of the prior art is complicated, realize difficult；Anti-loosing effect is poor, can not play really
Locking purpose.
Utility model content
Deficiency in for the above-mentioned prior art, the utility model provide a kind of simple in structure, easy to operate, anti-loosing effect
Significant check bolt nut structure assembly.
Technical solution adopted in the utility model is：
A kind of check bolt nut structure assembly, including connector and connected body, connector and connected body are set respectively
Through hole is equipped with, connector is connected with connected body by screw bolt and nut,
The outer surface of the nut is periphery；
The outer circumference surface of nut is provided with external screw thread；Externally threaded rotation direction and nut inner thread it is oppositely oriented；
The outer surface of the end of one end of nut is hexagon or quadrangle；
Nut external screw thread is connected with the internal thread of locking nut；
Nut external screw thread is identical with the rotation direction of the internal thread of locking nut；
The inner side end of locking nut is wanted to contact with connector or connected body surface.
The circumscribed diameter of a circle of the end of the nut for being provided with hexagon or quadrangle is less than nut outer circumference surface
Diameter.
A kind of check bolt nut structure assembly, including connector and connected body, connector is provided with threaded hole, is connected
Junctor is provided with through hole, and through-hole diameter is more than screw thread bore dia；
Connector is connected with connected body by bolt；
Bolt end passes through connected body, is connected with connector internal thread；
The head exterior surface of the bolt is periphery；
The outer circumference surface of bolt head is provided with external screw thread；The externally threaded rotation direction of bolt head and the rotation direction of bolt thread
On the contrary；
The outer surface of the end in the outside of bolt head is hexagon or quadrangle；
The external screw thread of bolt head is connected with the internal thread of locking nut；
The external screw thread of bolt head is identical with the rotation direction of the internal thread of locking nut；
The inner side end of locking nut is wanted to contact with connector or connected body surface.
The circumscribed diameter of a circle of the end of the bolt head for being provided with hexagon or quadrangle is less than bolt head
The diameter of outer circumference surface.
A kind of check bolt nut structure assembly, including connector and connected body, connector and connected body are set respectively
Through hole is equipped with, connector is connected with connected body by screw bolt and nut,
The head exterior surface of the bolt is periphery；
The outer circumference surface of bolt head is provided with external screw thread；The externally threaded rotation direction of bolt head and the rotation direction of bolt thread
On the contrary；
The outer surface of the end in the outside of bolt head is hexagon or quadrangle；
The external screw thread of bolt head is connected with the internal thread of locking nut；
The external screw thread of bolt head is identical with the rotation direction of the internal thread of locking nut；
The inner side end of locking nut is wanted to contact with connector or connected body surface.
The circumscribed diameter of a circle of the end in the outside of the bolt head for being provided with hexagon or quadrangle is less than bolt
The diameter of the outer circumference surface on head.
The advantageous effect of the utility model compared with the prior art：
The utility model check bolt nut structure assembly, simple in structure, easy for assemble or unload, manufacture is at low cost, application
Extensively, nut loosening is effectively prevented.
Description of the drawings
Fig. 1 is the structure diagram of the first embodiment of the utility model check bolt nut structure assembly；
Fig. 2 is the structure diagram of the second embodiment of the utility model check bolt nut structure assembly；
Fig. 3 is the dimensional structure diagram of the first embodiment of the utility model check bolt nut structure assembly；
Fig. 4 is the dimensional structure diagram of the second embodiment of the utility model check bolt nut structure assembly；
Fig. 5 is the dimensional structure diagram of the 3rd embodiment of the utility model check bolt nut structure assembly；
Fig. 6 is the dimensional structure diagram of the fourth embodiment of the utility model check bolt nut structure assembly.
In figure：
11st, connector 12, connected body
13rd, through hole 14, nut
15th, locking nut 16, bolt
17th, gasket
21st, connector 22, connected body
23rd, threaded hole 24, through hole
25th, bolt 26, locking nut
27th, gasket.
31st, connector 32, connected body
33rd, bolt 34, nut
35th, locking nut 36, gasket.
Specific embodiment
Referring to the drawings and the utility model is described in detail in embodiment：
Knowable to attached drawing 1 and 3, the first embodiment of the utility model, a kind of check bolt nut structure assembly, including connection
Body 11 and connected body 12, connector 11 and connected body are respectively arranged with through hole 13, and connector and connected body pass through bolt
16 are connected with nut 14,
The outer surface of the nut 14 is periphery；
The outer circumference surface of nut is provided with external screw thread；Externally threaded rotation direction and nut inner thread it is oppositely oriented；
The outer surface of the end of one end of nut is hexagon or quadrangle；
Nut external screw thread is connected with the internal thread of locking nut 15；
Nut external screw thread is identical with the rotation direction of the internal thread of locking nut；
The inner side end of locking nut is wanted to contact with connector or connected body surface.
The circumscribed diameter of a circle of the end of the nut for being provided with hexagon or quadrangle is less than nut outer circumference surface
Diameter.
Gasket 17 is provided between bolt and connected body.
Knowable to attached drawing 2 and 4, the second embodiment of the utility model, a kind of check bolt nut structure assembly, including connection
Body 21 and connected body 22, connector 21 are provided with threaded hole 23, and connected body 22 is provided with through hole 24, and 24 diameter of through hole is more than
23 diameter of threaded hole；
Connector 21 is connected with connected body 22 by bolt 25；
25 end of bolt passes through connected body 22, is connected with 21 internal thread of connector；
The head exterior surface of the bolt 25 is periphery；
The outer circumference surface on 25 head of bolt is provided with external screw thread；The externally threaded rotation direction of bolt head and the rotation of bolt thread
To opposite；
The outer surface of the end in the outside on 25 head of bolt is hexagon or quadrangle；
The external screw thread on 25 head of bolt is connected with the internal thread of locking nut 26；
The external screw thread of bolt head is identical with the rotation direction of the internal thread of locking nut 26；
The inner side end of locking nut is wanted to contact with connector or connected body surface.
The circumscribed diameter of a circle of the end in the outside of the bolt head for being provided with hexagon or quadrangle is less than bolt
The diameter of the outer circumference surface on head.
Gasket 27 is provided between bolt and connected body.
Knowable to attached drawing 5, the 3rd embodiment of the utility model, a kind of check bolt nut structure assembly, including connector
31 and connected body 32, connector and connected body be respectively arranged with through hole, connector and connected body and pass through bolt 33 and spiral shell
Mother 34 is connected,
The head exterior surface of the bolt is periphery；
The outer circumference surface of bolt head is provided with external screw thread；The externally threaded rotation direction of bolt head and the rotation direction of bolt thread
On the contrary；
The outer surface of the end in the outside of bolt head is hexagon or quadrangle；
The external screw thread of bolt head is connected with the internal thread of locking nut 35；
The external screw thread of bolt head is identical with the rotation direction of the internal thread of locking nut；
The inner side end of locking nut is wanted to contact with connector or connected body surface.
The circumscribed diameter of a circle of the end in the outside of the bolt head for being provided with hexagon or quadrangle is less than bolt
The diameter of the outer circumference surface on head.
Gasket 36 is provided between bolt and connected body.
The utility model check bolt nut structure assembly, simple in structure, easy for assemble or unload, manufacture is at low cost, application
Extensively, nut loosening is effectively prevented.
The above descriptions are merely preferred embodiments of the present invention, not the structure of the utility model is made any
Formal limitation.Every any simple modification made according to the technical essence of the utility model to above example is equal
Variation and modification, belong in the range of the technical solution of the utility model.
Claims (6)
1. a kind of check bolt nut structure assembly, including connector and connected body, connector and connected body are set respectively
There is through hole, connector is connected with connected body by screw bolt and nut,
It is characterized in that：The outer surface of the nut is periphery；
The outer circumference surface of nut is provided with external screw thread；Externally threaded rotation direction and nut inner thread it is oppositely oriented；
The outer surface of the end of one end of nut is hexagon or quadrangle；
Nut external screw thread is connected with the internal thread of locking nut；
Nut external screw thread is identical with the rotation direction of the internal thread of locking nut；
The inner side end of locking nut is wanted to contact with connector or connected body surface.
2. check bolt nut structure assembly according to claim 1, it is characterised in that：It is described to be provided with hexagon or four sides
The circumscribed diameter of a circle of the end of the nut of shape is less than the diameter of nut outer circumference surface.
3. a kind of check bolt nut structure assembly, including connector and connected body, connector is provided with threaded hole, it is connected
Body is provided with through hole, and through-hole diameter is more than screw thread bore dia；
Connector is connected with connected body by bolt；
Bolt end passes through connected body, is connected with connector internal thread；
It is characterized in that：The head exterior surface of the bolt is periphery；
The outer circumference surface of bolt head is provided with external screw thread；The externally threaded rotation direction of bolt head and the rotation direction phase of bolt thread
Instead；
The outer surface of the end in the outside of bolt head is hexagon or quadrangle；
The external screw thread of bolt head is connected with the internal thread of locking nut；
The external screw thread of bolt head is identical with the rotation direction of the internal thread of locking nut；
The inner side end of locking nut is wanted to contact with connector or connected body surface.
4. check bolt nut structure assembly according to claim 3, it is characterised in that：It is described to be provided with hexagon or four sides
The circumscribed diameter of a circle of the end of the bolt head of shape is less than the diameter of the outer circumference surface of bolt head.
5. a kind of check bolt nut structure assembly, including connector and connected body, connector and connected body are set respectively
There is through hole, connector is connected with connected body by screw bolt and nut,
It is characterized in that：The head exterior surface of the bolt is periphery；
The outer circumference surface of bolt head is provided with external screw thread；The externally threaded rotation direction of bolt head and the rotation direction phase of bolt thread
Instead；
The outer surface of the end in the outside of bolt head is hexagon or quadrangle；
The external screw thread of bolt head is connected with the internal thread of locking nut；
The external screw thread of bolt head is identical with the rotation direction of the internal thread of locking nut；
The inner side end of locking nut is wanted to contact with connector or connected body surface.
6. check bolt nut structure assembly according to claim 5, it is characterised in that：It is described to be provided with hexagon or four sides
The circumscribed diameter of a circle of the end in the outside of the bolt head of shape is less than the diameter of the outer circumference surface of bolt head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721630908.6U CN207454501U (en) | 2017-11-30 | 2017-11-30 | Check bolt nut structure assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721630908.6U CN207454501U (en) | 2017-11-30 | 2017-11-30 | Check bolt nut structure assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207454501U true CN207454501U (en) | 2018-06-05 |
Family
ID=62275468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721630908.6U Active CN207454501U (en) | 2017-11-30 | 2017-11-30 | Check bolt nut structure assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207454501U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725566A (en) * | 2017-11-30 | 2018-02-23 | 张小龙 | Check bolt nut structure assembly |
-
2017
- 2017-11-30 CN CN201721630908.6U patent/CN207454501U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725566A (en) * | 2017-11-30 | 2018-02-23 | 张小龙 | Check bolt nut structure assembly |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |