CN109185321A - A kind of pairs of anti-loose nut bolt group and its operating method with elastic bumps nut and annular groove nut composition - Google Patents
A kind of pairs of anti-loose nut bolt group and its operating method with elastic bumps nut and annular groove nut composition Download PDFInfo
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- CN109185321A CN109185321A CN201811381667.5A CN201811381667A CN109185321A CN 109185321 A CN109185321 A CN 109185321A CN 201811381667 A CN201811381667 A CN 201811381667A CN 109185321 A CN109185321 A CN 109185321A
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- Prior art keywords
- nut
- annular groove
- elastic bumps
- face
- frictional force
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- 239000000203 mixture Substances 0.000 title claims abstract description 10
- 238000011017 operating method Methods 0.000 title claims abstract description 6
- 241000826860 Trapezium Species 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/284—Locking by means of elastic deformation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
A kind of pairs of anti-loose nut bolt group and its operating method 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 invention belongs to mechanical engineering threaded connection locking field, being related to one kind, to can make full use of friction locking, prevents
Thread connection loosens, and improves connection effect, reduces a kind of band elastic bumps nut and annular groove spiral shell of the maintenance of thread connection, maintenance
The pairs of anti-loose nut bolt group and its operating method of mother's 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 side
Just the advantages that, brings conveniently to mechanical industry.But it has an inevitable weakness, in severe impact, vibration or change
Under load effect, or when temperature change is big, thread connection is possible to loosen or even completely disengaged.In real life because
Thread connection loosens the product failure generated, machine failure, disintegration, or even causes the example of fatal crass commonplace.Therefore
The reliability for how guaranteeing thread connection, prevents thread connection from loosening, and is that product quality is effectively ensured, improves product reliability
Importance, locking thread problem have 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 we
As soon as external force laterally can added, the resultant force of the lateral external forces and axial pre tightening force is much larger than single axial pre tightening force,
Pressure and frictional force between the screw thread pair of formation is also just bigger, so that it may prevent screw thread pair from relatively rotating.
The present invention is exactly when making threaded pre-tightening using a kind of double nut with elastic bumps nut and annular groove nut composition, no
It is only acted on by normal axial pre tightening force, while the effect also by a lateral external forces, bigger pressure between formation screw thread pair
Power and frictional force.An additional rubbing action point is also added simultaneously, increases additional frictional force, improves total frictional force pole
Limit value prevents screw thread pair from relatively rotating.
The technical solution adopted by the present invention to solve the technical problems:
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 that band elasticity is convex
Play nut, annular groove nut, bolt；The elastic bumps with elastic bumps nut be in arc-shaped, semi-cylindrical or cylindric,
It is made of elastic material, it is uprightly, vertical with nut end face on an end face of nut；The end face one of the annular groove nut
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 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 axis projection of outer well surface
In region.
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 invention has the advantages that mutual using the upstanding elastomeric protrusion of raised nut and the wedge-shaped groove face of annular groove nut
Effect other than axial pre tightening force, increases a radial forces when screw thread pair is pre-tightened more, is formed bigger between screw thread pair
Pressure and frictional force.Simultaneously also as elastic bumps and wedge-shaped groove face interact, and increases an additional friction and make
With point, increase additional pressure and frictional force, improve total frictional force limiting value, total frictional force limiting value is pre- much larger than common
Frictional force limiting value caused by tight bolt, anti-loosing effect is more preferable, can prevent screw thread pair from relatively rotating.It is reliability, practical
Property it is good, severe impact, vibration, alternating load or the big occasion of temperature change can be used in, effectively reduce the dimension to thread connection
Shield, maintenance, improve safety, the utilization rate of equipment utilization.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is connection assembly axial cross-sectional views of the invention.
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 (2)
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.
2. a kind of operating method of the pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition, it is characterized in that:
In use, annular groove nut is screwed in screw rod, make flat end face and work mounting s face contact, the nut of shank of bolt is directed toward in annular groove end face
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, until convex
Nut is played by annular groove nut tightening, stops screwing until reaching regulation maximum pretightning force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811381667.5A CN109185321A (en) | 2018-11-20 | 2018-11-20 | A kind of pairs of anti-loose nut bolt group and its operating method with elastic bumps nut and annular groove nut composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811381667.5A CN109185321A (en) | 2018-11-20 | 2018-11-20 | A kind of pairs of anti-loose nut bolt group and its operating method with elastic bumps nut and annular groove nut composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109185321A true CN109185321A (en) | 2019-01-11 |
Family
ID=64940140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811381667.5A Pending CN109185321A (en) | 2018-11-20 | 2018-11-20 | A kind of pairs of anti-loose nut bolt group and its operating method with elastic bumps nut and annular groove nut composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109185321A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869403A (en) * | 2019-03-14 | 2019-06-11 | 尹苑苑 | A kind of stop nut pushing tow pretensioner systems |
| CN111173830A (en) * | 2020-02-28 | 2020-05-19 | 扬州工业职业技术学院 | Composite locknut |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201813237U (en) * | 2010-09-30 | 2011-04-27 | 刘文富 | Anti-loosing connecting structure for vibrating motor |
| CN104454909A (en) * | 2014-11-12 | 2015-03-25 | 常州市新西华亚工具有限公司 | Vibratory motor base connecting device |
| CN108757700A (en) * | 2018-08-03 | 2018-11-06 | 王平安 | Deformation type anti-loosen screw nut component |
| CN209067641U (en) * | 2018-11-20 | 2019-07-05 | 韦志锋 | A kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition |
-
2018
- 2018-11-20 CN CN201811381667.5A patent/CN109185321A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201813237U (en) * | 2010-09-30 | 2011-04-27 | 刘文富 | Anti-loosing connecting structure for vibrating motor |
| CN104454909A (en) * | 2014-11-12 | 2015-03-25 | 常州市新西华亚工具有限公司 | Vibratory motor base connecting device |
| CN108757700A (en) * | 2018-08-03 | 2018-11-06 | 王平安 | Deformation type anti-loosen screw nut component |
| CN209067641U (en) * | 2018-11-20 | 2019-07-05 | 韦志锋 | A kind of pairs of anti-loose nut bolt group with elastic bumps nut and annular groove nut composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869403A (en) * | 2019-03-14 | 2019-06-11 | 尹苑苑 | A kind of stop nut pushing tow pretensioner systems |
| CN111173830A (en) * | 2020-02-28 | 2020-05-19 | 扬州工业职业技术学院 | Composite locknut |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190111 |
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