CN209067641U - A kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition - Google Patents
A kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition Download PDFInfo
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- CN209067641U CN209067641U CN201821914273.7U CN201821914273U CN209067641U CN 209067641 U CN209067641 U CN 209067641U CN 201821914273 U CN201821914273 U CN 201821914273U CN 209067641 U CN209067641 U CN 209067641U
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- nut
- annular groove
- elastic bumps
- frictional force
- screw thread
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- Bolts, Nuts, And Washers (AREA)
Abstract
A kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition, it is interacted using the upstanding elastomeric protrusion of raised nut and the wedge-shaped groove face of annular groove nut, when screw thread pair pre-tightens, other than axial pre tightening force, it increases a radial forces more, forms pressure and frictional force bigger between screw thread pair.Simultaneously also as elastic bumps and wedge-shaped groove face interact, an additional rubbing action point is increased again, increase additional pressure and frictional force, improve total frictional force limiting value, total frictional force limiting value is much larger than frictional force limiting value caused by common pretension bolt, its anti-loosing effect is more preferable, can prevent screw thread pair from relatively rotating.Reliability, practicability are good, can be used in severe impact, vibration, alternating load or the big occasion of temperature change, effectively reduce maintenance, maintenance to thread connection, improve safety, the utilization rate of equipment utilization.
Description
Technical field
The utility model belongs to mechanical engineering threaded connection locking field, be related to one kind can make full use of friction it is locking,
It prevents thread connection from loosening, improves connection effect, reduce a kind of band elastic bumps nut and ring of the maintenance of thread connection, maintenance
The pairs of anti-loose nut bolt group of slot nut composition.
Background technique
Various machines and component be unable to do without connector in being linked and packed.The quantity of connector accounts about machine components sum
The 60% of amount, wherein thread connection is in mechanical attachment using the most common form, has that structure is simple, connection is reliable, assembly and disassembly
The advantages that facilitating brings conveniently to mechanical industry.But it has an inevitable weakness, severe impact, vibration or
Under varying load effect, or when temperature change is big, thread connection is possible to loosen or even completely disengaged.In real life because
The product failure generated, machine failure, disintegration are loosened for thread connection, or even causes the example of fatal crass commonplace.Cause
How this guarantees the reliability of thread connection, prevents thread connection from loosening, and is that product quality is effectively ensured, and improves product reliability
Importance, locking thread problem has become the actual techniques problem of urgent need to resolve.
To solve the problems, such as loosening for connector, since thread connector be born, in the world the scientist of many countries with
Engineer has made a large amount of test and research.
There are many locking method, and by the difference of working principle, anti-loose method is divided into friction is locking, machinery is locking etc..Furthermore
There are also some special anti-loose methods, for example, between screw thread rivet welding, punching point is locking, coating adhesive is locking etc. screw thread pair.
Rubbing locking is a kind of most widely used locking mode, and this mode generates one between screw thread pair and do not become with external force
The normal pressure of change, to generate the frictional force that screw thread pair can be prevented to relatively rotate.This normal pressure can be by axial or simultaneously two
It is realized to collet threaded pair.Such as use elastic washer, double nut, self-locking nut and nylon anti-loose nut.It is this anti-
Loose measure formula is more convenient for the disassembly of nut, but the shock and vibration and varying load the case where, and bolt can be led because of relaxation at the beginning
Pretightning force decline is caused, with the increase of vibration number, pretightning force is gradually reduced, and nut will eventually be caused to loosen, thread connection
Failure.
The second way is mechanical locking.It is the relative rotation that appliance directly limits screw thread pair.Such as using split pin, series winding
Steel wire and washer etc..This mode causes disassembly inconvenient.
Summary of the invention
The locking root problem of bolt-connection is to prevent the relative rotation of screw thread pair.Rubbing locking will prevent screw thread pair
It relatively rotates, just must try to increase the pressure and frictional force between screw thread pair, or increase rubbing action point simultaneously, increase additional
Frictional force, improve total frictional force limiting value, can just prevent screw thread pair from relatively rotating.
After material is certain, coefficient of friction can not just change again, only raising screw thread pair between interaction force or
Increase rubbing action point quantity.
After threaded pre-tightening, usually only by the effect of single axial pre tightening force, pretightning force is usually material yield strength σ s
50~70%, it is maximum no more than 80%, limit by improving pretightning force and improve the frictional force between screw thread pair.If I
As soon as can laterally add external force, the resultant force of the lateral external forces and axial pre tightening force is much larger than single axial pretightening
Power, the pressure and frictional force between the screw thread pair of formation are also just bigger, so that it may prevent screw thread pair from relatively rotating.
The utility model is exactly to make threaded pre-tightening using a kind of double nut with elastic bumps nut and annular groove nut composition
When, it is not only acted on, while the effect also by a lateral external forces, is formed bigger between screw thread pair by normal axial pre tightening force
Pressure and frictional force.An additional rubbing action point is also added simultaneously, increases additional frictional force, improves total friction
Power limiting value, prevents screw thread pair from relatively rotating.
The utility model solves technical solution used by its technical problem:
A kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition, it is characterized in that: including band bullet
Property protrusion nut, annular groove nut, bolt；The elastic bumps with elastic bumps nut are in arc-shaped, semi-cylindrical or circle
Column is made of elastic material, uprightly, vertical with nut end face on an end face of nut；The end of the annular groove nut
Face one end is burnishing surface, and circumferentially there is a circle wedge shape annular groove in other end；Cambridge ring slot cross-section is right-angled trapezium, inner straight outer oblique,
Outer well surface is wedge shaped to be restrained to slot bottom axle center；Groove depth is greater than elastic bumps height, and elastic bumps position is located at the axial direction of outer well surface
In view field.
A kind of operating method of the pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition, feature
It is: in use, annular groove nut is screwed in screw rod, makes flat end face and work mounting s face contact, shank of bolt is directed toward in annular groove end face
Nut screw terminal pre-tightens work connection；Again by the elastic bumps of raised nut screw-in opposite with the groove face end of annular groove nut, directly
To raised nut by annular groove nut tightening, stop screwing until reaching regulation maximum pretightning force.
The utility model has the beneficial effects that utilizing the upstanding elastomeric protrusion of raised nut and the wedge-shaped groove face of annular groove nut
Interaction other than axial pre tightening force, increases a radial forces more, is formed between screw thread pair when screw thread pair is pre-tightened
Bigger pressure and frictional force.Simultaneously also as elastic bumps and wedge-shaped groove face interact, and increases one and additional rub
Position is wiped, additional pressure and frictional force are increased, improves total frictional force limiting value, total frictional force limiting value is much larger than general
Frictional force limiting value caused by logical pretension bolt, anti-loosing effect is more preferable, can prevent screw thread pair from relatively rotating.Reliability,
Practicability is good, can be used in severe impact, vibration, alternating load or the big occasion of temperature change, effectively reduce to thread connection
Maintenance, maintenance, improve safety, the utilization rate of equipment utilization.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the connection assembly axial cross-sectional views of the utility model.
Fig. 2 is annular groove nut axial section.
Fig. 3 is annular groove nut annular groove end elevation view.
Fig. 4 is elastic bumps nut axial section.
Fig. 5 is elastic bumps nut protrusion end elevation view.
In figure: the wedge-shaped annular groove 3. of 1. annular groove nut 2. is with elastic bumps nut
4. raised 6. washers of 5. upstanding elastomeric of bolt
7. the coupled workpiece 2. of coupled workpiece 1 8.
Specific embodiment
In Fig. 1 embodiment, a kind of pairs of anti-loose nut bolt of band elastic bumps nut (3) and annular groove nut (1) composition
Group, including annular groove nut (1), band elastic bumps nut (3), bolt (4).The upstanding elastomeric of the band elastic bumps nut (3)
Raised (5) are arc-shaped, are made of elastic material, are located on an end face of raised nut (3), uprightly, with raised nut (3)
End face is vertical.End face one end of the annular groove nut (1) is burnishing surface, and circumferentially there are a circle wedge shape annular groove (2), wedge in other end
Shape annular groove (2) section is right-angled trapezium, and inner straight outer oblique, outer well surface is wedge shaped to be restrained to slot bottom axle center；It is convex that slot (2) is greater than elasticity deeply
(5) height is played, elastic bumps (5) position is located in the view field of outer well surface, and the projection size of elastic bumps (5) is again smaller than outer
The projected area radial dimension of groove face.
In use, annular groove nut (1) is screwed in screw rod (4), contact flat end face with work mounting s face (7), annular groove end
The nut screw terminal of shank of bolt (4) is directed toward in face, and workpiece (7,8) are coupled and are pre-tightened；Again by the elastic bumps (5) of raised nut (3)
It is opposite with the groove face end of annular groove nut (1), it screws in screw rod (4).Raised nut (3) constantly rotate, elastic bumps (5) gradually under
It moves, upstanding elastomeric protrusion (5) gradually screws in annular groove (2), gradually interacts with wedge groove face contact.Because of wedge-shaped groove face
It is restrained to slot bottom axle center, converging channel face pressure compels upstanding elastomeric raised (5) and generates flexible deformation inward slant, upstanding elastomeric protrusion
(5) reaction gives annular groove nut (1) cross force.More toward backspin, the elasticity of upstanding elastomeric protrusion (5) becomes raised nut (3)
Shape is bigger, and upstanding elastomeric protrusion (5) and the interaction force of annular groove nut (1) are also bigger.When raised nut (3) is by annular groove nut
(1) it screwing, when reaching regulation maximum pretightning force, it is maximum not only act upon the contact surfaces of two nuts, the axial force on screw thread pair,
And the mutually transverse active force of two nuts is also maximum.Horizontal force suffered by raised nut (3) is directed toward axle center, annular groove nut
(1) horizontal force suffered by refers to the off-axis heart.
Other than the axial pre tightening force suffered by the common pairs of anti-loose nut of screw thread pair at this time, and a more radial effect
Power forms bigger pressure and frictional force between screw thread pair.Simultaneously also as elasticity interacts with wedge-shaped groove face, and increase one
A additional rubbing action point, increases additional frictional force, improves total frictional force limiting value, total frictional force limiting value is long-range
The frictional force limiting value caused by common double nut, anti-loosing effect are also just more preferable, so that it may prevent screw thread pair from relatively rotating.
Annular groove nut (1) improves the stress of nut (1), screw rod (4) screw thread, nut because of the presence of annular groove (2)
(1) deformation with bolt (4) reaches unanimity, and the thread deflection of nut (1) is consistent with the deflection of bolt (4), uniform force,
The fatigue strength 40% of bolt (4) can be improved.
Claims (1)
1. a kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition, it is characterized in that: including band elasticity
Raised nut, annular groove nut, bolt；The elastic bumps with elastic bumps nut are in arc-shaped, semi-cylindrical or cylinder
Shape is made of elastic material, uprightly, vertical with nut end face on an end face of nut；The end face of the annular groove nut
One end is burnishing surface, and circumferentially there is a circle wedge shape annular groove in other end；Cambridge ring slot cross-section is right-angled trapezium, inner straight outer oblique, outside
Groove face is wedge shaped to restrain to slot bottom axle center；Groove depth is greater than elastic bumps height, and elastic bumps position is located at the axial of outer well surface and throws
In the domain of shadow zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821914273.7U CN209067641U (en) | 2018-11-20 | 2018-11-20 | A kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821914273.7U CN209067641U (en) | 2018-11-20 | 2018-11-20 | A kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209067641U true CN209067641U (en) | 2019-07-05 |
Family
ID=67099979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821914273.7U Expired - Fee Related CN209067641U (en) | 2018-11-20 | 2018-11-20 | A kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209067641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185321A (en) * | 2018-11-20 | 2019-01-11 | 韦志锋 | A kind of pairs of anti-loose nut bolt group and its operating method with elastic bumps nut and annular groove nut composition |
-
2018
- 2018-11-20 CN CN201821914273.7U patent/CN209067641U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185321A (en) * | 2018-11-20 | 2019-01-11 | 韦志锋 | A kind of pairs of anti-loose nut bolt group and its operating method with elastic bumps nut and annular groove nut composition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190725 Address after: 401313 No. 20 East Road, University Town, Shapingba District, Chongqing Patentee after: Chongqing University of Science & Technology Address before: 400042 No. 1 Petroleum Road, Yuzhong District, Chongqing Patentee before: Wei Zhifeng |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190705 Termination date: 20191120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |