CN109185312A - A kind of the check bolt group and its operating method of stop washer and annular groove nut composition - Google Patents
A kind of the check bolt group and its operating method of stop washer and annular groove nut composition Download PDFInfo
- Publication number
- CN109185312A CN109185312A CN201811381648.2A CN201811381648A CN109185312A CN 109185312 A CN109185312 A CN 109185312A CN 201811381648 A CN201811381648 A CN 201811381648A CN 109185312 A CN109185312 A CN 109185312A
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- China
- Prior art keywords
- stop washer
- annular groove
- nut
- tooth
- frictional force
- 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.)
- Pending
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- 239000000203 mixture Substances 0.000 title claims abstract description 9
- 238000011017 operating method Methods 0.000 title claims abstract description 6
- 210000003456 pulmonary alveoli Anatomy 0.000 claims description 8
- 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
- 238000009434 installation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 6
- 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
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000007689 inspection Methods 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
- 230000008439 repair process Effects 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
-
- 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
- F16B37/00—Nuts or like thread-engaging members
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
A kind of the check bolt group and its operating method of stop washer and annular groove nut composition, it is interacted using the upright outer tooth of stop washer 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 outer tooth 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 stop washer and annular groove nut composition of the maintenance of thread connection, maintenance
Check bolt group and its operating method.
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 screw thread pair is directly limited with retainer.Such as using split pin,
Series winding steel wire and stop 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.
It is not only pre- by normal axial direction when the present invention exactly makes threaded pre-tightening using a kind of stop washer and annular groove nut
Clamp force acts on, while the effect also by a lateral external forces, bigger pressure and frictional force between formation screw thread pair.Also increase simultaneously
An additional rubbing action point is added, has increased additional frictional force, improve total frictional force limiting value, prevent screw thread pair opposite
Rotation.
The technical solution adopted by the present invention to solve the technical problems:
A kind of check bolt group of stop washer and annular groove nut composition, it is characterized in that: including stop washer, annular groove nut, spiral shell
Bolt；The stop washer is made of plate elastic material, there is an interior tooth, at least one outer tooth；Interior tooth boss radially inward
It rises, stud bolt bar alveolus when installation；Outer tooth is located at washer outer rim, uprightly, vertical with washer face, arc-shaped, each outer tooth
Central angle corresponding to arc length is less than 30 °；End face one end of the annular groove nut is burnishing surface, and circumferentially there is a circle in other end
Wedge-shaped annular groove；Cambridge ring slot cross-section is right-angled trapezium, and inner straight outer oblique, wedge-shaped outer well surface is wedge shaped to be restrained to slot bottom axle center；Groove depth
High greater than the outer tooth of stop washer, the outer tooth position of stop washer is located in the axis projection region of outer well surface.
A kind of operating method of stop washer and the check bolt group of annular groove nut composition, it is characterized in that: in use, will be only
Washer puts on screw rod, and interior tooth is embedded in shank of bolt alveolus, and outer tooth is directed toward the nut screw terminal of shank of bolt；Again by the groove face of nut
, screw-in screw rod opposite with stop washer is held, until nut screws stop washer, stopping is revolved until reaching regulation maximum pretightning force
Tightly.
The invention has the advantages that mutually being made using the wedge-shaped groove face of the upright outer tooth and annular groove nut of stop washer
With when screw thread pair pre-tightens, other than axial pre tightening force, increasing a radial forces more, formed bigger between screw thread pair
Pressure and frictional force.Simultaneously also as outer tooth and wedge-shaped groove face interact, and an additional rubbing action point is increased, increased
Add additional pressure and frictional force, improve total frictional force limiting value, total frictional force limiting value is much larger than common pretension bolt
Generated frictional force limiting value, anti-loosing effect is more preferable, can prevent screw thread pair from relatively rotating.Reliability, practicability are good, can
To be used in severe impact, vibration, alternating load or the big occasion of temperature change, maintenance, the inspection to thread connection are effectively reduced
It repairs, improves 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 the top view of stop washer.
Fig. 3 is the A-A sectional view of stop washer top view.
Fig. 4 is annular groove nut axial section.
Fig. 5 be annular groove nut inclined-plane be corrugated when annular groove end elevation view.
Fig. 6 is the top view of the stop washer with 3 upright outer teeth.
In figure: upright outer 3. interior tooth of tooth of 1. stop washer 2.
4. 5. shank of bolt alveolus of bolt, 6. annular groove nut
7. wedge-shaped annular groove 8. is coupled the coupled workpiece 2 of workpiece 1 9.
10. cambridge ring slot corrugated inclined-plane.
Specific embodiment
In Fig. 1 embodiment, a kind of check bolt group of stop washer and annular groove nut composition, including stop washer (1),
Annular groove nut (6), bolt (4).The stop washer (1) is made of thin plate elastic material, there is an interior tooth (3), an outer tooth
(2), central angle corresponding to outer tooth arc length is less than 20 °；Boss rises interior tooth (3) radially inward；Outer tooth position (2) is in washer (1)
Outer rim, it is uprightly, vertical with washer (1) end face；It is provided on shank of bolt (4) alveolus (5), the interior tooth (3) of stop washer (1) is embedded in tooth
In slot (5), guarantee that stop washer (1) does not produce relative rotation with shank of bolt (4).End face one end of the annular groove nut (6) is
Circumferentially there are a circle wedge shape annular groove (7) in burnishing surface, other end, and wedge-shaped annular groove (7) section is right-angled trapezium, inner straight outer oblique, slot
The deep outer tooth (2) for being greater than stop washer (1) is high, and outer tooth (2) position of stop washer is located in the view field of outer well surface.Bolt
Alveolus (5) are provided on threaded rod (4).
In use, in interior tooth (3) stud bolt bar alveolus (5), outer tooth (2) refers to by screw rod (4) on stop pad snare (1)
To the nut screw terminal of shank of bolt (4)；Again relatively by the groove face end of nut (6) and stop washer (1), screw rod (4) are screwed in.Nut
(6) constantly rotation, wedge-shaped groove face (7) also gradually move down, and the upright outer tooth (2) of stop washer gradually screws in annular groove (7), gradually
It interacts with wedge groove face contact.Because wedge groove is restrained towards axle center, converging channel face pressure is compeled upright outer tooth (2) and is generated
Flexible deformation slopes inwardly, and upright outer tooth (2) reaction gives nut one cross force.Nut (6) is more toward backspin, upright outer tooth
(2) flexible deformation is bigger, and outer tooth (2) and the interaction force of nut (6) are also bigger.When nut (6) revolves stop washer (1)
Tightly, when reaching regulation maximum pretightning force, cross force is also maximum.
Screw thread pair at this time is other than axial pre tightening force, and more radial forces, is formed bigger between screw thread pair
Pressure and frictional force.Simultaneously also as outer tooth and wedge-shaped groove face interact, and an additional rubbing action point is increased, increased
Add additional frictional force, improve total frictional force limiting value, total frictional force limiting value is much larger than produced by common pretension bolt
Frictional force limiting value, anti-loosing effect is also just more preferable, so that it may prevent screw thread pair from relatively rotating.
The inclined-plane of annular groove nut (6) can be made the corrugated shape being made of continuous cambered surface, and advantageous nut (6) is straight after screwing
It is vertical that outer tooth (2) is chimeric with ripple cambered surface (10) is engaged.The chimeric edge rib for being engaged effect and adjacent circular arc concave surface is to upright outer tooth (2)
Sliding have very strong mechanical inhibition, more locked screw thread pair, screw thread pair avoided to relatively rotate.
Annular groove nut (6) improves the stress of nut (6), screw rod (4) screw thread, nut because annular groove (7) have presence
(6) deformation with bolt (4) reaches unanimity, and the thread deflection of nut (6) 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 stop washer and annular groove nut composition check bolt group, it is characterized in that: include stop washer, annular groove nut,
Bolt；The stop washer is made of plate elastic material, there is an interior tooth, at least one outer tooth；Interior tooth is justified radially inward
Protrusion, stud bolt bar alveolus when installation；Outer tooth is located at washer outer rim, and uprightly, vertical with washer face, arc-shaped is each outer
Central angle corresponding to tooth arc length is less than 30 °；End face one end of the annular groove nut is burnishing surface, and other end circumferentially has one
Enclose wedge-shaped annular groove；Cambridge ring slot cross-section is right-angled trapezium, and inner straight outer oblique, wedge-shaped outer well surface is wedge shaped to be restrained to slot bottom axle center；Slot
The deep outer tooth for being greater than stop washer is high, and the outer tooth position of stop washer is located in the axis projection region of outer well surface.
2. the operating method of the check bolt group of a kind of stop washer and annular groove nut composition, it is characterized in that: in use, by stop
Washer puts on screw rod, and interior tooth is embedded in shank of bolt alveolus, and outer tooth is directed toward the nut screw terminal of shank of bolt；Again by the groove face end of nut
It is opposite with stop washer, screw rod is screwed in, until nut screws stop washer, stopping is revolved until reaching regulation maximum pretightning force
Tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811381648.2A CN109185312A (en) | 2018-11-20 | 2018-11-20 | A kind of the check bolt group and its operating method of stop washer and annular groove nut composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811381648.2A CN109185312A (en) | 2018-11-20 | 2018-11-20 | A kind of the check bolt group and its operating method of stop washer and annular groove nut composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109185312A true CN109185312A (en) | 2019-01-11 |
Family
ID=64940136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811381648.2A Pending CN109185312A (en) | 2018-11-20 | 2018-11-20 | A kind of the check bolt group and its operating method of stop washer and annular groove nut composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109185312A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206810A (en) * | 2019-07-02 | 2019-09-06 | 杨富云 | The locking means and its lock washer of nut and bolt |
| CN110206809A (en) * | 2019-06-24 | 2019-09-06 | 杨富云 | The locking means and its lock washer of nuts and bolt |
| CN110206808A (en) * | 2019-06-21 | 2019-09-06 | 杨富云 | The locking means and its lock washer of bolts and nuts |
| CN111306175A (en) * | 2020-04-08 | 2020-06-19 | 海盐永捷科技股份有限公司 | Locking anti-vibration screw subassembly |
| CN111997983A (en) * | 2020-05-15 | 2020-11-27 | 申秀云 | Locking device for stop groove nut |
| CN112431843A (en) * | 2020-12-24 | 2021-03-02 | 申秀云 | Screw locking device |
| CN114050442A (en) * | 2021-10-18 | 2022-02-15 | 合肥联宝信息技术有限公司 | Board card connecting mechanism and board card assembly |
| CN116480675A (en) * | 2023-06-21 | 2023-07-25 | 福建省华盖机械制造有限公司 | Shockproof bolt with limiting function |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206808A (en) * | 2019-06-21 | 2019-09-06 | 杨富云 | The locking means and its lock washer of bolts and nuts |
| CN110206809A (en) * | 2019-06-24 | 2019-09-06 | 杨富云 | The locking means and its lock washer of nuts and bolt |
| CN110206810A (en) * | 2019-07-02 | 2019-09-06 | 杨富云 | The locking means and its lock washer of nut and bolt |
| CN111306175A (en) * | 2020-04-08 | 2020-06-19 | 海盐永捷科技股份有限公司 | Locking anti-vibration screw subassembly |
| CN111997983A (en) * | 2020-05-15 | 2020-11-27 | 申秀云 | Locking device for stop groove nut |
| CN112431843A (en) * | 2020-12-24 | 2021-03-02 | 申秀云 | Screw locking device |
| CN114050442A (en) * | 2021-10-18 | 2022-02-15 | 合肥联宝信息技术有限公司 | Board card connecting mechanism and board card assembly |
| CN114050442B (en) * | 2021-10-18 | 2023-09-01 | 合肥联宝信息技术有限公司 | Board card connecting mechanism and board card assembly |
| CN116480675A (en) * | 2023-06-21 | 2023-07-25 | 福建省华盖机械制造有限公司 | Shockproof bolt with limiting function |
| CN116480675B (en) * | 2023-06-21 | 2023-09-26 | 福建省华盖机械制造有限公司 | Shockproof bolt with limiting function |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |
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