CN106351936B - Axial compression formula anti-loose fastening device - Google Patents
Axial compression formula anti-loose fastening device Download PDFInfo
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- CN106351936B CN106351936B CN201611049286.8A CN201611049286A CN106351936B CN 106351936 B CN106351936 B CN 106351936B CN 201611049286 A CN201611049286 A CN 201611049286A CN 106351936 B CN106351936 B CN 106351936B
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- main nut
- axial compression
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- 230000006835 compression Effects 0.000 title claims abstract description 21
- 238000007906 compression Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims description 5
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000004677 Nylon Substances 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
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 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
- F16B39/02—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
- F16B39/126—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts causing radial forces on the bolt-shaft
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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
- F16B37/00—Nuts or like thread-engaging members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention discloses a kind of axial compression formula anti-loose fastening devices, to improve product anti-loosening property, adapt to high standard high safety and the needs of other complex environment operating conditions.Axial compression formula anti-loose fastening device of the invention includes bolt, main nut, locking nut, main nut is made of preceding g. slice header, mid-section threads interconnecting piece and endpiece variant part, the endpiece variant part of main nut is combined equipped with groove, groove combination includes upper groove and lower groove, and upper groove includes straightway groove, spherical groove and arc groove；Lower groove includes straightway groove and hemispherical groove；The internal screw thread of locking nut is set as deformation fine thread, and tail end end face is equipped with the seal face to fit with the endpiece variant part of main nut.Technical solution of the present invention can bring reliable shock-proof check performance, significant the service life for improving nut and bolt, it is reusable, convenient for loading and unloading the advantages that, it is applied widely.
Description
Technical field
The present invention relates to a kind of locknuts, belong to locking fastening workpiece technical field.
Background technique
In production and living, the process that is linked and packed usually be unable to do without fastener, and fastener is brought conveniently to mechanical industry.
In attachment fitting, bolt and nut connection type is a kind of most common fastening structure.Using the machine of bolt and nut fastener
Tool in actual use, due to the influence of complex working condition, bolt and nut in the environment of frequent vibration and alternating load not
Avoidable ground can voluntarily fall off, to cause using danger.
To solve the problems, such as that clamp device loosens, the scientists and engineers of many countries have done a large amount of test and have ground in the world
To study carefully, anti-loose fastening device generallys use the methods of locking plate, pin, nylon insertion, deformation screw thread, chemical gluing originating from foreign countries,
The time for having delayed fastener voluntarily to loosen to a certain extent, but do not tackle the problem at its root.It is domestic existing
There are many anti-loose method, and one of which is non-removable anti-loose method, use weld, bond or rush a little riveting etc. modes can
Disassembly is threadedly coupled and changes into non-dismountable threaded connection, belongs to more reliable traditional anti-loose method, but its disadvantage it is also obvious that
I.e. threaded fastener cannot be reused, and operate when installation and removal very troublesome.Another way is to use to be mechanically fixed
Part progress is locking, and principle is to make to consolidate between screw element and connected piece or between screw element and screw element using mechanical fixed part
Determine and lock, is loosened with preventing, the disadvantage is that increase the weight being fastenedly connected, thus the trouble for also resulting in manufacture and installing,
Motor-driven installation, higher cost are not can be carried out.There are also a kind of increasing friction force locking mode, be using increase screw thread between or spiral shell
The frictional force of silk nut end face or the method for the frictional force both increased simultaneously are locking to achieve the purpose that, this anti-loose method can
It is poor by property, also do not tackle the problem at its root, still have maltilevel security hidden danger, it is difficult adapt to high standard high safety and other
The needs of complex environment operating condition.
Authorization Notice No. is the utility model of CN205298218U, entitled " a kind of elastic uniform pressure type locknut "
Patent provides a kind of stop nut solution, and the endpiece of main nut is designed to the elastic pressing part that there is groove to combine, is made
Screw thread and screw flight binding face in the endpiece elastic pressing part of main nut generate equally distributed frictional force in whole circumference direction,
Eliminate the stress raisers between screw thread, enable main nut apply material mechanical performance allow lock torsion when guarantee by
It is not loosened under the various adverse circumstances operating conditions such as vibration and alternating load frequently, while effective guarantee stress maximum position is led
The service life of nut endpiece elastic pressing part internal whorl realizes the reuse of screw rod, main nut and locking nut.But the master of the program
The design of nut endpiece elastic pressing part and locking nut also has room for promotion, main nut to be locked at spiral shell strongerly
On bolt.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies of the prior art and provide a kind of axial compression formula anti-loose fastening device, pass through
The helicitic texture of main nut deformation position and locking nut is improved, more excellent reliable locking purpose is reached.
The present invention specifically uses the following technical solution:
Axial compression formula anti-loose fastening device, including bolt, main nut, locking nut；Main nut and bolt, locking nut
It is connected through a screw thread respectively with main nut, specifically, the inner ring of main nut is provided with internal screw thread I, internal screw thread I and bolt
External screw thread I matches, so that main nut can be sheathed on bolt；The outer ring of main nut is provided with external screw thread II, the external screw thread
II matches with the internal screw thread II of locking nut inner ring, so that locking nut can be sheathed on main nut.
The inner ring of locking nut is equipped with internal screw thread II, and internal screw thread II matches with the external screw thread II of main nut；The locking
The outside of nut is six side of standard；The internal screw thread II of locking nut is preferably arranged to deformation fine thread, the i.e. tooth of internal screw thread II
Type angle is deformation；The tail end end face of locking nut is equipped with seal face, and the seal face is axial perpendicular to bolt, and seal face
Center is equipped with through-hole, and when locking nut is sheathed on main nut, the seal face of locking nut can become with the endpiece of main nut
Shape portion fits.
Main nut is made of preceding g. slice header, mid-section threads interconnecting piece and endpiece variant part；Preceding g. slice header is six side of standard；In
Section threaded joints are equipped with main nut external screw thread II；Endpiece variant part is combined equipped with groove, and groove combination includes upper groove under
The fluting direction of groove, the upper groove and lower groove is each perpendicular to the axial direction of bolt；Entire upper groove is deformed along main nut endpiece
The circumference in portion is distributed comprising straightway groove, spherical groove and arc groove, wherein spherical groove is set on entire
The groove both ends of groove, arc groove are set between two spherical grooves, and arc groove may be configured as one or two, spherical female
It is connected between slot and arc groove by straightway groove, when arc groove is set as two, arc groove and arc groove
Between also by straightway groove connect；Entire lower groove is distributed along the circumference of main nut endpiece variant part comprising straight
Line segment groove and hemispherical groove, wherein hemispherical groove is set to the groove both ends of entire lower groove, two hemispherical grooves it
Between connected by straightway groove.
Further, the specific structure of the internal screw thread II of locking nut is that internal screw thread II is screw thread pair tooth form angular deformation screw thread,
Its tooth bottom is equipped with tapered ramp, and the angle of the tapered ramp is preferably 30 degree；When mutually being tightened between locking nut and main nut
When, the cusp of main nut external screw thread II can tightly be withstood on the tapered ramp of internal screw thread II of locking nut, to generate
Larger coupling mechanism force.Due to the angulation change of thread form, make to be applied to contact between screw thread caused by normal force and bolt axis at 60
Angle is spent, rather than as 30 degree of angles of regular screw threads, therefore the deformation internal screw thread II normal pressure of locking nut is far longer than fastening
Pressure, generated locking frictional force also just greatly increase.Meanwhile the thread crest of main nut external screw thread II with locking nut
Deformation internal screw thread II occlusion when, be distributed in making uniform load in the helix overall length of contact, avoid regular screw threads occlusion
When 80% or more full payload concentration act on the flank of the first and second teeth so that deformation spiral marking connection pair not only
It overcomes common standard and is coupled the disadvantage that pair is easy to pine certainly under vibration, but also can prolong the service life.
Further, straightway groove, spherical groove and the arc groove of upper groove are set in approximately the same plane, lower groove
Straightway groove and hemispherical groove be set to approximately the same plane on；Preferably, when the arc groove of upper groove is two, under
The position of two hemispherical grooves of groove is preferably separately positioned on the underface of two arc grooves of upper groove.
Further, the upper groove of main nut and lower groove are centrosymmetric arrangement, and the groove depth of upper groove and lower groove is (i.e. whole
Overall circumference of a groove on main nut endpiece variant part) it is all larger than the radius of main nut endpiece variant part inner hole, specific slot
Depth is preferably arranged to main nut endpiece variant part internal bore radius plus 1.5mm to 2.5mm.
Further, upper groove and lower groove are recessed at the Major Diam of main nut internal screw thread I.
Further, lower groove is set at the root of the close mid-section threads interconnecting piece of endpiece variant part.
Further, the arc apex direction of the arc groove of upper groove is the direction far from lower groove, the hemisphere of lower groove
The protrusion direction of connected in star is close to the direction of upper groove.
Further, the aperture of the through-hole of locking nut seal face is not less than the aperture of the through-hole of main nut, so as to bolt energy
It is passed through from the through-hole.
Further, bolt, locking nut are by OCr18Ni9, and A2-70 grades of (304) austenitic stainless steel body materials are made, main spiral shell
Mother is made of Cr17Ni14Mo2, A4-80 grades of (316) austenitic stainless steel body materials.
The working principle of the invention is, after locking nut is sheathed on main nut, by screwing locking nut, so that locking
The endpiece variant part of main nut is close to and is squeezed to the seal face of nut, so that endpiece variant part is to the direction of g. slice header before main nut
Make power；Due to endpiece variant part be equipped with groove group, under the action of the seal face of locking nut, main nut endpiece variant part it is recessed
Deformation occurs for slot, and the internal screw thread of the deformation groove can snap tight against the screw thread of bolt, to reach that bolt and nut is tight
Solid effect.Since lower notches are equipped with straightway groove, spherical groove/hemispherical groove and arc groove, to generate
Structural flexible deformation modulus, is finally reached reusable purpose.Wherein, the setting of straightway groove can guarantee
The position of fluting is in the major diameter of screw thread；The setting of spherical groove/hemispherical groove can guarantee that in mechanical movement, elasticity becomes
The control of shape modulus is in normal reciprocating motion and will not be deformed and follow the string；It is not set again since screw thread has inclination angle
Arc groove will be easily destroyed the thread form angle of screw thread, and the setting of arc groove can guarantee the slotting position of groove combination in spiral shell
In the major diameter of line.
Under preferred embodiment, since the internal screw thread II of locking nut is deformation fine thread, locking nut is set in main spiral shell
When on female external screw thread II, deformation fine thread can hold main nut external screw thread II tightly, enable the seal face of locking nut
It is fixed, to realize that locking nut can axially suppress main nut for a long time, is also reached while locking main nut securely
Self-locking purpose is arrived, the more one-step optimization locking functions of nut.
By using above-mentioned technical proposal, the present invention can be realized following technical effect:
1. reliable shock-proof check performance: the present invention can be realized double locking, i.e., on the one hand by recessed on main nut
Slot locks the large-diameter thread of bolt, and the deformation screw thread of another aspect locking nut locks main nut, makes winner
Nut reaches self-locking when realizing clamping screw, and the performance of shock-proof check has been better achieved.
2. principle according to the present invention is it is found that the present invention can lock bolt in the case where not destroying screw thread auxiliary structure
Tightly, therefore with can dramatically the service life of nut and bolt is improved.
3. reusable: the groove group of main nut plays the role of flexible deformation, therefore weight may be implemented in the present invention
It is multiple to use.
4. being not necessarily to any auxiliary locking element, such as spring washer, locked spacer.This clamp device does not need extraneous appoint
What auxiliary element can achieve completely self-locking purpose, i.e. main nut clamping screw, and locking nut locks main nut, reaches complete
Self-locking effect.
5. convenient for loading and unloading: the invention belongs to rotate freely type, need to just apply torque when finally tightening.
6. specifications and models use standard size the invention belongs to the clamp device of type under unified central planning, match with standard external.
7. the present invention is not influenced by high temperature variation, can be widely applied to require on the components of self-locking function, such as
On the demanding self-locking part such as high-speed railway, space flight, ship, automobile, dimensions is set according to actual needs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is main nut structural schematic diagram in the embodiment of the present invention.
Fig. 3 is the part I partial enlarged view in Fig. 2.
Fig. 4 is the part J partial enlarged view in Fig. 2.
Fig. 5 is lock nut structure diagram in the embodiment of the present invention.
Fig. 6 is locking nut fine thread structural schematic diagram in the embodiment of the present invention.
It marks and represents in figure: 1. bolts；2. main nut；3. locking nut；4. washer；11. bolt external screw thread I；21. leading portion
Head；22. mid-section threads interconnecting piece；23. endpiece variant part；24. main nut internal screw thread I；25. main nut external screw thread II；31. lock
Tight nut inner thread II；32. locking nut seal face；231. upper groove；232. lower groove；2311. straightway groove；2312.
Spherical groove；2313. arc groove；2321. straightway groove；2322. hemispherical groove.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and examples.
The structure of present pre-ferred embodiments is as shown in Figure 1.The axial compression formula anti-loose fastening device of the present embodiment includes
Bolt 1, main nut 2, locking nut 3；Wherein, the inner ring of main nut 2 is provided with internal screw thread I24, internal screw thread I24 and bolt 1
External screw thread I11 match, main nut 2 by thread bush be set to bolt 1 on；The outer ring of main nut 2 is provided with external screw thread II25,
The inner ring of locking nut 3 is provided with internal screw thread II31, and main nut external screw thread II25 matches with locking nut internal screw thread II31, lock
Tight nut 3 is set on main nut 2 by thread bush.The present embodiment is also additionally arranged washer 4, is set between main nut 2 and bolt head.
Main nut structure is as shown in Figure 2.Main nut 2 is by preceding g. slice header 21, mid-section threads interconnecting piece 22 and endpiece variant part
23 compositions；The preceding g. slice header 21 of main nut 2 is positive six side of standard；The outer surface of mid-section threads interconnecting piece 22 is equipped with outside main nut
Screw thread II25；Endpiece variant part 23 is combined equipped with groove, and groove combination specifically includes a upper groove 231 and a lower groove
232, two groove be centrosymmetric arrangement and it is parallel to each other, the fluting direction of two grooves is each perpendicular to the axial direction of bolt 1, slot
Position is at the Major Diam of main nut internal screw thread I24；Considered based on anti-loosing effect, the groove depth setting of upper groove and lower groove
1.5 to 2.5mm are added for 23 internal bore radius of main nut endpiece variant part；Lower groove 232 is set to close on endpiece variant part 23
The boundary position of mid-section threads interconnecting piece 22.
The specific structure of groove combination is referring to Fig. 3, Fig. 4.The both ends of upper groove 231 are spherical groove 2312, spherical groove
It is set between 2312 there are two arc groove 2313, between 2313, two arc grooves 2313 of spherical groove 2312 and arc groove
It is connected respectively by straightway groove 2311, the arc apex of arc groove 2313 is directed away from the direction of lower groove 232；It is recessed
The both ends of slot 232 are hemispherical groove 2322, are connected between two halves spherical groove 2322 by straightway groove 2321, hemispherical
The protrusion direction of groove 2322 is close to the direction of upper groove 231.
The structure of locking nut 3 is as shown in Figure 5.The inner ring of locking nut 3 be equipped with internal screw thread II31, internal screw thread II31 with
The external screw thread II25 of main nut matches；The outside of the locking nut is six side of standard；31 internal screw thread II of locking nut is using change
Shape fine thread；The tail end end face of locking nut 3 is equipped with seal face 32, and the seal face 32 is axial perpendicular to bolt 1, and presses
Tight 32 center of face is equipped with through-hole, and the aperture of the through-hole should be not less than the aperture of the through-hole of main nut 2.When locking nut 3 is sheathed on
When on main nut 2, the seal face 32 of locking nut 3 fits with the endpiece variant part 23 of main nut 2.
The deformation fine thread structure of locking nut 31 is as shown in Figure 6.The screw thread pair tooth form angular deformation screw thread (yin in Fig. 6
Shadow part) to be equipped with angle be 30 degree of tapered ramp for tooth bottom, when so that mutually being tightened between locking nut 3 and main nut 2, lead
The cusp of nut external screw thread II25 can tightly be withstood on the tapered ramp of internal screw thread II31 of locking nut, to generate one
Fixed coupling mechanism force realizes that main nut 2 is self-locking.
The specification for the axial compression formula anti-loose fastening device that above-described embodiment is recommended can be set by such as the following table 1
It sets: (note: " L " is bolt length)
Table 1
According to the specification of table 1, corresponding installation process is shown in table 2 using Tightening moment:
Table 2
The Tightening moment that table 2 provides is the artificial controllable strength of consideration, while being also to facilitate to install the important of reuse
Foundation.
In order to better implement the present embodiment, following requirement: axial compression formula anti-loose fastening device pair preferably is done to technology
The release moment values that part generates after the nut fastening of clamping force effect should be greater than or be equal to its Tightening moment value；Axial compression formula
After anti-loose fastening device carries out vibration test to clamp device, the Tightening moment value for generating the nut of clamping force effect to part is answered
More than or equal to 95 ﹪ of Tightening moment value before its vibration test；Axial compression formula anti-loose fastening device different preventing loose measure formula regulation
Test Tightening moment and lubrication under conditions of, to clamp device carry out amplitude be 0.1d, frequency 10Hz, vibration number are
After 1200 oscillation crosswise tests, the ratio between bolt remnants axle power and initial axle power should be greater than or are equal to 80 ﹪.
The present invention is not limited to the above embodiments, all are belonged to using the technical solution that equivalent replacement or equivalence replacement are formed
The scope of protection of present invention.
Claims (10)
1. a kind of axial compression formula anti-loose fastening device, including bolt, main nut, locking nut, the main nut and bolt, lock
Tight nut is connected through a screw thread respectively with main nut, it is characterised in that:
The outside of the locking nut is six side of standard, and the inner ring of the locking nut is equipped with internal screw thread, and the internal screw thread is to become
Shape fine thread, the tail end end face of the locking nut are equipped with seal face, and the seal face is axial perpendicular to the bolt, institute
Seal face center is stated equipped with through-hole；
The main nut is made of preceding g. slice header, mid-section threads interconnecting piece and endpiece variant part, and the preceding g. slice header is standard six
Side；The mid-section threads interconnecting piece is equipped with main nut external screw thread, and the main nut external screw thread is interior with the locking nut inner ring
Screw thread matches；The endpiece variant part is combined equipped with groove, and the groove combination includes upper groove and lower groove, the fovea superior
The fluting direction of slot and lower groove is each perpendicular to the axial direction of the bolt；The upper groove includes straightway groove, spherical groove
And arc groove, the spherical groove are set to the groove both ends of the entire upper groove, the arc groove is set to two balls
Between connected in star, connected between the spherical groove and arc groove by the straightway groove；The lower groove includes straight
Line segment groove and hemispherical groove, the hemispherical groove are set to the groove both ends of the entire lower groove, and two hemisphericals are recessed
It is connected between slot by the straightway groove.
2. axial compression formula anti-loose fastening device according to claim 1, it is characterised in that: the interior spiral shell of the locking nut
Line is screw thread pair tooth form angular deformation screw thread, and tooth bottom is equipped with tapered ramp.
3. axial compression formula anti-loose fastening device according to claim 2, it is characterised in that: the angle of the tapered ramp
It is 30 degree.
4. according to claim 1 to axial compression formula anti-loose fastening device described in 3 any one, it is characterised in that: on described
Straightway groove, spherical groove and the arc groove of groove are set in approximately the same plane, the straightway groove of the lower groove
It is set in approximately the same plane with hemispherical groove；When the arc groove of the upper groove be two when, two arc grooves it
Between connected by the straightway groove of the upper groove, two hemispherical grooves of the lower groove are separately positioned on described
The underface of two arc grooves of upper groove.
5. according to claim 1 to axial compression formula anti-loose fastening device described in 3 any one, it is characterised in that: the master
The upper groove and lower groove of nut are centrosymmetric arrangement, and the groove depth of the upper groove and lower groove is all larger than the main nut
The radius of endpiece variant part inner hole.
6. axial compression formula anti-loose fastening device according to claim 5, it is characterised in that: the upper groove and lower groove
It is recessed at the Major Diam of internal screw thread I of the main nut.
7. axial compression formula anti-loose fastening device according to claim 6, it is characterised in that: the lower groove is set to described
At the root of the close mid-section threads interconnecting piece of endpiece variant part.
8. axial compression formula anti-loose fastening device according to claim 7, it is characterised in that: the arc of the upper groove is recessed
The arc apex direction of slot is the direction far from the lower groove, and the protrusion direction of the hemispherical groove of the lower groove is close
The direction of the upper groove.
9. axial compression formula anti-loose fastening device according to claim 8, it is characterised in that: the locking nut seal face
Through-hole aperture not less than the main nut through-hole aperture.
10. axial compression formula anti-loose fastening device according to claim 8, it is characterised in that: the bolt and the lock
Tight nut is by OCr18Ni9, and 304 austenitic stainless steel body material of A2-70 grade is made, and the main nut is by Cr17Ni 14Mo2, A4-
80 grade of 316 austenitic stainless steel body material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611049286.8A CN106351936B (en) | 2016-11-25 | 2016-11-25 | Axial compression formula anti-loose fastening device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611049286.8A CN106351936B (en) | 2016-11-25 | 2016-11-25 | Axial compression formula anti-loose fastening device |
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| CN106351936A CN106351936A (en) | 2017-01-25 |
| CN106351936B true CN106351936B (en) | 2019-10-08 |
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|---|---|---|---|---|
| CN110319103A (en) * | 2018-03-29 | 2019-10-11 | 罗章平 | Automatic anti-loosing screw nut and dedicated dismantling device |
| CN109139643A (en) * | 2018-11-09 | 2019-01-04 | 浙江天开实业有限公司 | A kind of tapered expansion pipe |
| CN110185691A (en) * | 2019-06-26 | 2019-08-30 | 朴得宝 | Prevent loose bolts nut assembly |
| CN110439912B (en) * | 2019-07-15 | 2024-07-19 | 东风商用车有限公司 | Locking flange face bolt |
| CN113172100B (en) * | 2021-04-27 | 2022-06-17 | 四川易尚天交实业有限公司 | Adjustable rolling guide and guard device for three-roller star-shaped precision rolling mill |
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| GB561453A (en) * | 1942-12-15 | 1944-05-19 | R K Dundas Ltd | Improvements in or relating to self-locking or "stiff" nuts |
| CN2718303Y (en) * | 2004-08-04 | 2005-08-17 | 王起征 | Full-thread locknut |
| CN201184352Y (en) * | 2008-04-16 | 2009-01-21 | 宁波永灵铁路配件有限公司 | Heterodont locking type anti-loose and anti-drop nut |
| CN202946514U (en) * | 2012-08-10 | 2013-05-22 | 青岛德才装饰安装工程有限公司 | Anti-loose self-locking nut and bolt |
| CN105465143A (en) * | 2016-01-17 | 2016-04-06 | 江苏金鼎钢结构有限公司 | Elastic pressure uniformizing type locking nut device |
| CN206290562U (en) * | 2016-11-25 | 2017-06-30 | 江苏金鼎钢结构有限公司 | The locking fastener of axial compression formula |
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- 2016-11-25 CN CN201611049286.8A patent/CN106351936B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB561453A (en) * | 1942-12-15 | 1944-05-19 | R K Dundas Ltd | Improvements in or relating to self-locking or "stiff" nuts |
| CN2718303Y (en) * | 2004-08-04 | 2005-08-17 | 王起征 | Full-thread locknut |
| CN201184352Y (en) * | 2008-04-16 | 2009-01-21 | 宁波永灵铁路配件有限公司 | Heterodont locking type anti-loose and anti-drop nut |
| CN202946514U (en) * | 2012-08-10 | 2013-05-22 | 青岛德才装饰安装工程有限公司 | Anti-loose self-locking nut and bolt |
| CN105465143A (en) * | 2016-01-17 | 2016-04-06 | 江苏金鼎钢结构有限公司 | Elastic pressure uniformizing type locking nut device |
| CN206290562U (en) * | 2016-11-25 | 2017-06-30 | 江苏金鼎钢结构有限公司 | The locking fastener of axial compression formula |
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|---|---|
| CN106351936A (en) | 2017-01-25 |
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