CN106763088A - Synchronous mode double thread is connected and locking technical method - Google Patents
Synchronous mode double thread is connected and locking technical method Download PDFInfo
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- CN106763088A CN106763088A CN201611206279.4A CN201611206279A CN106763088A CN 106763088 A CN106763088 A CN 106763088A CN 201611206279 A CN201611206279 A CN 201611206279A CN 106763088 A CN106763088 A CN 106763088A
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- screw thread
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 31
- 238000010168 coupling process Methods 0.000 claims abstract description 31
- 238000005859 coupling reaction Methods 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Spark Plugs (AREA)
Abstract
The present invention is a kind of new threaded connection and prevents the technical method for loosening；It is both a kind of novel technical method that lock ability is provided for screw thread pair, is also a kind of novel technical method of the threaded connection createed for the purpose of lock ability is provided.Technical characteristic：Two nuts, each nut are used in threaded connection pair has two kinds of screw threads that are oppositely oriented, being located at different surfaces respectively, and two nuts are by a kind of screw thread interconnection of rotation direction, by the screw thread and bolt connection of another rotation direction；The characteristic of the two kinds of thread synchronous effect on nut interferes the active force on screw thread, so that two nuts cannot loosen each other and coupling mechanism force prevents two nuts from synchronously loosening.
Description
Technical field
The threaded connection pair that is made up of screw bolt and nut and require that it has anti-loosening property.
Background technology
When use environment has the mal-condition such as vibration and impact, to ensure the reliability of threaded connection, it is necessary to prevent spiral shell
The secondary loosening of line must provide for the secondary ability of locking screw.
It is existing（Locking）Loosing Prevention Technology method includes：To improve the frictional force of thread surface as know-why, for example
HARD LOCK stop nuts realize locking to increase a nut for simulation chock；Change the property of screw thread, such as Tang thread connects
The method of connecing is that the method being connected with two nuts respectively with the oppositely oriented two kind screw thread on bolt realizes locking；Change screw thread
Structural parameters, for example Spiralock nuts increase nut on screw thread flank angle with increase the frictional force of screw thread so as to realize lock
Tightly；Mechanical locking, such as binding nut and the nut with locking cotter way.
The content of the invention
The present invention is a kind of new threaded connection and prevents the technical method for loosening；Be both one kind for screw thread pair provides lock
The novel technical method of tight ability, is also a kind of new technology side of the threaded connection createed for the purpose of providing lock ability
Method.
Technical characteristic：In threaded connection pair use two nuts, each nut have it is oppositely oriented, respectively be located at difference
Two kinds of screw threads on surface, two nuts are by a kind of screw thread interconnection of rotation direction, by the screw thread and bolt of another rotation direction
Connection；The characteristic of the two kinds of thread synchronous effect on nut interferes the active force on screw thread, so that two nuts
Cannot loosen each other and coupling mechanism force prevents two nuts from synchronously loosening.
Below for technical scheme is illustrated.
As shown in figure 1, screw thread pair is by bolt（1）, clamp nut（2）And locking nut（3）Constitute；Bolt（1）On spiral shell
Line（4）It is A type screw threads；Clamp nut（2）On internal thread（5）Insertion nut is by end face A（9）To end face D（12）, be A types
Screw thread, clamp nut（2）On external screw thread（6）By end face C（11）To end face D（12）, be Type B screw thread；Locking nut（3）On
, by end face E（13）To inner face F（14）Internal thread（7）It is Type B screw thread, locking nut（3）On, by section G（15）Extremely
End face H（16）Internal thread（8）It is A type screw threads；A types screw thread is opposite with Type B thread rotary orientation.
Generally, A types screw thread is equal with Type B thread pitch, interact when screw thread on uniform force, rationally.
Clamp nut（2）And locking nut（3）All the time be only by Type B screw thread be connected with each other and not（Such as existing pair
Nut check method is such）Two nuts are made to tighten each other and be mutually tightened on the end face of nut, such as Fig. 2 to Fig. 4 institutes
Show, end face C（11）With end face E（13）All the time do not contact.
As shown in Fig. 2 making clamp nut first（2）And locking nut（3）It is connected by Type B screw thread, then makes the two
By A types screw thread and bolt（1）Connection, two nuts of synchronous axial system make clamp nut（2）Tighten and be fastened onto bearing-surface
（17）, now locking nut（3）Do not stress.
It is have external disturbance axially and radially the reason for nut loosening in regular screw threads pair, reduces bolt pretightening
While the active force of the bearing-surface i.e. suffered by reduction nut, there is provided make nut to the torque for releasing direction rotation；The present invention
Technical scheme be increase a locking nut（3）To provide coupling mechanism force, make locking nut by unique structure design（3）With
Clamp nut（2）Between be only capable of transmitting coupling mechanism force by the screw thread set up, it is oppositely oriented due to nut（A types and Type B）
Active force on screw thread is interfered can be made coupling mechanism force not fail because of disturbance and make the coupling mechanism force can be with synchronous effect in this
Two nuts, so as to increase the moment of resistance with locking screw pair, locking nut（3）Screw direction the difference process and effect then locked
Fruit also can be different, are described below.
As shown in figure 3, immediately after step shown in Fig. 2 and according to the independent rotation lock nut of its rotation direction（3）, due to rotation direction
Two kinds of opposite screw threads are acted on and screwed simultaneously（The method is referred to as positive locking method）；Clamp nut（2）On screw thread and locking
Nut（3）On internal thread（8）Carrying tooth side Impact direction and relative size as shown, due to locking nut（3）After screwing
So that bolt（1）Continue stretch thus coupling mechanism force F’ 0With original pretightning force F0Direction is identical, therefore, bearing-surface（17）Act on
Clamp nut（2）Axial force be equal to F’ 0+（Caused by the deformation of connector and connected piece after partial loss, by relatively firm
Degree coefficient is determined）F0, and because its external diameter is naturally larger than the functional diameter (FD) of the A type screw threads then moment of resistance（The static moment of resistance is
Disturb to make clamp nut（2）Produce rotation trend and the moment of resistance that must overcome first）Must increase；If what disturbance was produced turns
Kinetic moment is more than clamp nut（2）On the moment of resistance, due to clamp nut（2）Connected simultaneously by two oppositely oriented screw threads
Locking nut（3）And bolt（1）, along the direction of A type thread looseness exactly along the direction of Type B screw threads for fastening, therefore fastening
Nut（2）Cannot be relative to locking nut（3）Individually loosen and locking nut can only driven（3）Could pine after synchronous axial system
It is dynamic, it means that disturbance must continue to overcome locking nut（3）With bolt（1）Between（Dynamic is additional）The moment of resistance,
Therefore the moment of resistance of whole screw thread pair increases due to coupling mechanism force；Due to being only threadedly coupled by Type B between two nuts（And hold
Face does not contact）If, clamp nut（2）Do not loosen, Radial Perturbation will not be passed to locking nut（3）, and clamp nut（2）
To locking nut（3）It is any（Including bias）Axially disturbance（Such as increase of any point stress or change on Type B screw thread
It is small）All always can only can be to offset edge along the frictional force increase and decrease amount in the normal direction transmitting forces of helix thus thread surface
The increase and decrease amount of the component of the tangential direction of helix, and due to locking nut（3）A type screw threads between active force it is mutually dry
Relate to, this disturbance can be offset thus cannot be formed along the tangential rotating torque of helix, therefore locking nut（3）Will not be relative
In clamp nut（2）Individually loosen, i.e. disturbance cannot change clamp nut（2）And locking nut（3）It is locked because of coupling mechanism force
Effect together；Locking nut（3）Will not be relative to clamp nut（2）Loosen then coupling mechanism force always effective thus remaining
Pretightning force and coupling mechanism force the moment of resistance of disturbance cancelling can be provided；Produce screw thread pair by above-mentioned 4 links such
Locking effect：Disturbance cannot make clamp nut（2）And locking nut（3）Each individually loosen, coupling mechanism force provide not only prevention
The two nuts synchronously loosen the moment of resistance, also increase clamp nut（2）Tightening state under moment of friction.
As shown in figure 4, immediately after step shown in Fig. 2 and according to the independent rotation lock nut of opposite direction that it rotates（3）,
Screwed because two kinds of oppositely oriented screw threads are acted on simultaneously（The method is referred to as reverse locking method）；Clamp nut（2）On spiral shell
Line and locking nut（3）On internal thread（8）Carrying tooth side Impact direction and relative size as shown, due to locking nut
（3）By with clamp nut（2）Collective effect and make bolt（1）The coupling mechanism force for being acted in opposite directions, i.e., by internal thread（5）With
Internal thread（8）Different bearer tooth side it is common to bolt（1）Apply pressure, then clamp nut（2）On there will necessarily be one it is virtual
End face X（18）, thus end face is to bearing-surface（17）Part be supported face（17）Axial force（With F0In the opposite direction）
And bolt（1）Axial force（With F0Direction is identical）And amount of force is equal, thus end face is to end face D（12）Part
Then it is subject to locking nut（3）Axial force（With F0In the opposite direction）And bolt（1）Axial force（With F0Direction is identical）
And amount of force is equal, then virtual end face X（18）Upper axial force is zero, therefore any axially disturbance all cannot be from fastening
Nut（2）Pass to locking nut（3）, it is that coupling mechanism force size is constant all the time that coupling mechanism force is completely irrelevant with disturbance, therefore, even if disturbing
The rotating torque of movable property life is more than clamp nut（2）On the moment of resistance coupling mechanism force that also must continue to overcome size constant provided
's（Dynamically）The moment of resistance can just make clamp nut（2）With locking nut（3）Produce loosening trend, it means that according to using ring
Border sets suitable coupling mechanism force just can be with disturbance cancelling；Due to locking nut（3）Type B screw thread internal thread（7）Diameter it is big
In the internal thread of A type screw threads（8）Diameter and active force thereon（Because interfering and）It is equal, rubbing on the former screw thread
Wipe torque and be more than the latter, when disturbance overcomes clamp nut（2）On the moment of resistance after must first overcome locking nut（3）A types
The moment of resistance on screw thread（It is only possible to loosen）, it means that clamp nut（2）Can not be relative to locking nut（3）Individually loosen and
Locking nut can only driven（3）Could be loosened after synchronous axial system, that is to say, that clamp nut（2）And locking nut（3）Always
Be be locked in together, the increase of the moment of resistance of whole screw thread pair；With the 6th point in identical be, disturbance can not equally pass through（It is not loose
Dynamic）Clamp nut（2）Make locking nut（3）Produce along the tangential turning moment and locking nut of helix（3）All the time receive
Coupling mechanism force is acted on, therefore locking nut（3）Will not be relative to clamp nut（2）Loosen；Screw thread pair is made by above-mentioned 3 links
Produce such locking effect：Disturbance cannot make clamp nut（2）And locking nut（3）Each individually loosen, and size is all the time
Constant coupling mechanism force provides the moment of resistance for preventing the two nuts from synchronously loosening.
6th point with the 7th point as two parts in technical scheme, be respectively adapted to different locking
Performance requirement, the former can provide larger static resisting torque and extra dynamic torque, and the latter can provide larger and steady
Fixed dynamic torque；The two all avoids this failure mode in existing locking technical method：For lock nut first
Loosening loses the nut loosening that coupling mechanism force is then used to fasten；Compared with prior art, two nut connecting bolts are synchronous turning
It is dynamic and non-sequential tighten, two kinds of screw threads on nut are synchronous axial systems rather than rotate respectively, therefore the present invention is " the double spiral shells of synchronous mode
Line is connected and locking technical method ".
Advantages of the present invention：Compared to other technical schemes with increasing friction force as principle, the technology of the present invention principle is more
Plus it is advanced, there is provided the technical method stable performance of the moment of resistance and will not fail；Compared to other technical schemes for changing structure, this
Inventive technique requirement is simpler（Pertain only to common screw thread process）, cost is lower, is also more easy to standardization；It is existing to use double spiral shells
Female technical method is required to provide an initial coupling mechanism force for the limit, and only needing to basis according to technical method of the invention makes
Function that can be to realize preventing from loosening with the initial coupling mechanism force of environment set appropriate level, thus security it is higher, to material
Performance requirement is lower；Screw thread reasonable stress, will not destroy structure, beneficial to Reusability.
Brief description of the drawings
Fig. 1：It is structural representation of the invention.
Fig. 2：It is the force analysis figure of the screw thread pair under tightening state of the invention.
Fig. 3：It is the force analysis figure of the screw thread pair of positive locking method of the invention.
Fig. 4：It is the force analysis figure of the screw thread pair of reverse locking method of the invention.
Specific embodiment
One, forward direction locking methods.
As shown in figure 3, clamp nut（2）And locking nut（3）After assembling again jointly and bolt（1）Assembling, it is synchronous to turn
Dynamic clamp nut（2）And locking nut（3）Make clamp nut（2）Screw and be anchored on bearing-surface（17）；Afterwards, by this rotation side
To independent rotation lock nut（3）And screw, it is passed to the internal thread of A type screw threads（8）With the internal thread of Type B screw thread（7）'s
Simultaneously effect, relative to bolt（1）And clamp nut（2）Complete locking（Note two end faces of nut not in contact with）；Pass through
The two steps, make screw thread pair constitute connection, fastening workpiece, lock and prevent it from loosening；The numerical value of pretightning force should be according to country
Standard is implemented, and the numerical value of coupling mechanism force should be determined according to use environment, by experiment and experience；This kind of implementation method is suitable for outer
To disturb relative mitigation or Radial Perturbation more than the occasion for axially disturbing, paying the utmost attention to the moment of resistance for increasing static.
Bolt（1）Specifications parameter（Nominal diameter, pitch and pretightning force etc.）It is specified criteria, clamp nut（2）And lock
Tight nut（3）On A type screw threads parameter it is thus determined that, set Type B screw thread pitch it is equal with A type screw threads, with bolt（1）'s
Pretightning force with estimate the coupling mechanism force sum that will apply in advance and be set to clamp nut（2）End face A（9）To end face B（10）Portion
Point guarantee load and determine its external diameter, Type B screw thread and locking nut are set to coupling mechanism force（3）On A type screw threads guarantee carry
Lotus thus determines clamp nut（2）End face C（11）To end face D（12）Partial outside dimension and locking nut（3）It is interior
Footpath and outside dimension, it is thus determined that the nominal diameter of Type B screw thread, clamp nut（2）On the screwing length of A type screw threads should be according to
National standard determines, and Type B screw thread and locking nut（3）On A type screw threads screwing length can according to coupling mechanism force size and
Experience determines, thus, clamp nut（2）And locking nut（3）Specifications parameter all determine.
Two, reverse locking methods.
As shown in figure 4, clamp nut（2）And locking nut（3）After assembling again jointly and bolt（1）Assembling, it is synchronous to turn
Dynamic clamp nut（2）And locking nut（3）Make clamp nut（2）Screw and be anchored on bearing-surface（17）；Afterwards, by this rotation side
To opposite direction, independent rotation lock nut（3）And screw, it is passed to the internal thread of A type screw threads（8）In Type B screw thread
Screw thread（7）On active force simultaneously act on, relative to bolt（1）And clamp nut（2）Complete locking（Note two ends of nut
Face not in contact with）；By the two steps, make whole screw thread pair connection, fastening workpiece, lock and prevent it from loosening；Pretightning force
Numerical value should implement according to national standard, the numerical value of coupling mechanism force should be determined according to use environment, by experiment and experience；It is this kind of
Implementation method is suitable for external disturbance fierceness relatively or axially disturbs more than Radial Perturbation, pays the utmost attention to increase dynamic resistance
The occasion of square.
Bolt（1）Specifications parameter（Nominal diameter, pitch and pretightning force etc.）It is specified criteria, clamp nut（2）And lock
Tight nut（3）On A type screw threads parameter it is thus determined that, set Type B screw thread pitch it is equal with A type screw threads, with bolt（1）'s
Pretightning force and the size of the coupling mechanism force that will apply is estimated in advance be set to two parts end i.e. as shown in Figure 1 of clamp nut
Face A（9）To end face B（10）And end face C（11）To end face D（12）It is respective guarantee load thus determine clamp nut（2）'s
Outside dimension, it may thus be appreciated that the nominal diameter of Type B screw thread, locking nut is set to coupling mechanism force（3）Guarantee load so that it is determined that
Its internal diameter and outside dimension, clamp nut（2）On the screwing length of A type screw threads should determine according to national standard, and Type B screw thread
And locking nut（3）On the screwing length of A type screw threads can be determined according to coupling mechanism force size and experience, thus, nut
Specifications parameter all determines.
Claims (1)
1. the present invention is a kind of new threaded connection and prevents the technical method for loosening；Technical characteristic：Make in threaded connection pair
With two nuts, each nut have it is oppositely oriented, respectively positioned at two kinds of screw threads of different surfaces, two nuts are by one kind
The screw thread of rotation direction is connected with each other, by the screw thread and bolt connection of another rotation direction；What two kinds of thread synchronous on nut were acted on
Characteristic interferes the active force on screw thread, so that two nuts cannot loosen each other and coupling mechanism force prevents two
Individual nut synchronously loosens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611206279.4A CN106763088A (en) | 2016-12-23 | 2016-12-23 | Synchronous mode double thread is connected and locking technical method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611206279.4A CN106763088A (en) | 2016-12-23 | 2016-12-23 | Synchronous mode double thread is connected and locking technical method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763088A true CN106763088A (en) | 2017-05-31 |
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ID=58920019
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611206279.4A Pending CN106763088A (en) | 2016-12-23 | 2016-12-23 | Synchronous mode double thread is connected and locking technical method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106763088A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB177334A (en) * | 1921-02-07 | 1922-03-30 | Walter Clay Peters | Improvements in lock nuts |
| CN201908932U (en) * | 2011-02-28 | 2011-07-27 | 杨清立 | Self-locking locknut assembly |
| CN202149125U (en) * | 2011-08-04 | 2012-02-22 | 杨清立 | Self-locking locknut assembly |
| CN202991790U (en) * | 2012-12-20 | 2013-06-12 | 温州信德电力配件有限公司 | Interlocking locking nut |
| JP2014119000A (en) * | 2012-12-14 | 2014-06-30 | Yoshiaki Yokota | Double lock nut |
| CN204739070U (en) * | 2015-05-14 | 2015-11-04 | 诸暨市先见工业设计有限公司 | Automatic locking locknut |
| CN205478813U (en) * | 2016-01-08 | 2016-08-17 | 上海底特精密紧固件股份有限公司 | Locking combination nut of pretension formula |
-
2016
- 2016-12-23 CN CN201611206279.4A patent/CN106763088A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB177334A (en) * | 1921-02-07 | 1922-03-30 | Walter Clay Peters | Improvements in lock nuts |
| CN201908932U (en) * | 2011-02-28 | 2011-07-27 | 杨清立 | Self-locking locknut assembly |
| CN202149125U (en) * | 2011-08-04 | 2012-02-22 | 杨清立 | Self-locking locknut assembly |
| JP2014119000A (en) * | 2012-12-14 | 2014-06-30 | Yoshiaki Yokota | Double lock nut |
| CN202991790U (en) * | 2012-12-20 | 2013-06-12 | 温州信德电力配件有限公司 | Interlocking locking nut |
| CN204739070U (en) * | 2015-05-14 | 2015-11-04 | 诸暨市先见工业设计有限公司 | Automatic locking locknut |
| CN205478813U (en) * | 2016-01-08 | 2016-08-17 | 上海底特精密紧固件股份有限公司 | Locking combination nut of pretension formula |
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Application publication date: 20170531 |