CN105041829B - A kind of stop nut and application method - Google Patents
A kind of stop nut and application method Download PDFInfo
- Publication number
- CN105041829B CN105041829B CN201510525285.5A CN201510525285A CN105041829B CN 105041829 B CN105041829 B CN 105041829B CN 201510525285 A CN201510525285 A CN 201510525285A CN 105041829 B CN105041829 B CN 105041829B
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- China
- Prior art keywords
- nut
- internal thread
- bolt
- inner nut
- external screw
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- 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.)
- Expired - Fee Related
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- 238000000034 method Methods 0.000 title claims description 21
- 210000000481 breast Anatomy 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007257 malfunction Effects 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
-
- 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
- F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Dowels (AREA)
Abstract
A kind of stop nut, including outer nut and inner nut, the first internal thread are offered inside inner nut, inner nut outer wall lower end offers external screw thread；Outer nut bosom offers the second internal thread, and outer nut inner bottom offers the 3rd internal thread；Inner nut is arranged in outer nut；External screw thread is consistent with the rotation direction of the second internal thread, external screw thread and the first internal thread, the 3rd internal thread it is oppositely oriented, the distance between the first plane of inner nut bottom and second plane below the second internal thread in outer nut are not less than 1 times of pitch.The beneficial effects of the present invention are：1st, the present invention is engaged after tightening by hand bolt by suitable minus thread, bolt can not be produced loosening, anti-loosing effect is good；2nd, it is simple in construction, it can be achieved by the fastening of simple nut bolt locking；3rd, it is easy for installation；4th, optional bolt scope is wide；5th, when bolt is tightened, the bottom surface of bolt head does not contact with the top surface of inner nut, thus the pretightning force needed is more much smaller than prior art.
Description
Technical field
The present invention relates to a kind of nut, particularly a kind of stop nut and application method.
Background technology
Bolt and nut is widely deployed in the every field of society as the most frequently used removable fastenings.But
It is that the phenomenon released occurs in bolt and nut in the case of by strong vibrations or irregular active force, so as to cause
The major accident of equipment malfunction, even casualties, therefore, there is the invention of many stop nuts, check bolt.
The A of CN 103195786 disclose a kind of stop nut for preventing from voluntarily loosening on bolt, by mother nut with
The assembling of secondary nut, realizes locking, but the secondary nut internal and external threads rotation direction in this method is consistent, larger in bolt presses power
When, secondary nut can be tightly locked so as to be integrally formed with bolt, locking so as to realize；
The A of CN 104074854 disclose a kind of stop nut, locking to realize by inserting bayonet lock in the side of nut,
But because bayonet lock does not have a pretightning force, when nut wants the pine to fall back on stop position, bayonet lock can just play a role, therefore this method
It is actually not locking but avoid coming off；
CN 102606606A disclose a kind of check bolt, by left-hand thread nut and standard nut to bolt double locking,
Locking so as to realize, this method is locking to bolt progress by the frictional force between left-hand thread nut and standard nut, works as bolt
When the shearing force being subject to is more than the frictional force, bolt can still drive left-hand thread nut to move and can not be locking, and this method
The bolt used must be customization, and criteria of right and wrong part can not be general；
The A of CN 104405752 disclose a kind of check bolt, are bored by interior spiral shell and are combined with outer nut, using internal and external threads
Oppositely oriented mode, realize locking；But the inner nut form that this method uses is taper, and the processing of the nut of taper will
Ask very high, difficulty of processing is big, more difficult production, and the check bolt described in the A of CN 104405752, complicated, installation
Difficulty is larger.
At present, the fastening between bolt and nut on the market, the typically bottom surface by nut and the bottom surface of bolt head it
Between frictional force realize tighten, it is desirable to screwing force it is bigger, very arduously.
The content of the invention
The purpose of the present invention be overcome prior art it is above-mentioned deficiency and provide a kind of anti-loosing effect it is good, it is simple in construction, peace
Dress is convenient, the stop nut that optional bolt scope is wide, screwing force is small.
The technical scheme is that：A kind of stop nut, including outer nut and inner nut, is offered inside inner nut
One internal thread, inner nut outer wall lower end offer external screw thread；Outer nut bosom offers the second internal thread, inside outer nut
Bottom offers the 3rd internal thread；Inner nut is arranged in outer nut.
The external screw thread is consistent with the rotation direction of the second internal thread, external screw thread and the first internal thread, the rotation direction of the 3rd internal thread
Conversely；Inner nut is connected by the second internal thread of external screw thread and outer nut, the first internal thread, the outer nut of bolt and inner nut
The 3rd internal thread connection, if bolt be given a shock or the effect of irregular force and have loosening be inclined to, have in drive
The tendency of nut rotation, but due to external screw thread and the first internal thread, the 3rd internal thread it is oppositely oriented, so as to be formed along inverse spiral shell
Line engages, and now, inner nut can rotate to the direction of fastening, thus whole bolt and nut fastener can be increasingly tighter, reaches anti-
The effect of pine.
Further, the second plane in the first plane of the inner nut bottom and outer nut below the second internal thread it
Between distance be not less than 1 times of pitch；
Its reason is：If the second plane in the first plane of inner nut bottom and outer nut below the second internal thread it
Between distance be h, pitch p, the second internal thread depth of thread is L;First, h have to be larger than 0, because if h=0, inner nut
The plane of bottom can be touched with the flat face below the second internal thread, certain rub now, between inner nut and outer nut be present
Power f is wiped, and this frictional force f is directly proportional to the thrust N of inner nut to bolt, if bolt is larger to the thrust N of inner nut,
So corresponding frictional force f also can be larger, when f is more than the pretightning force F being threadedly coupled between inner nut and outer nut, outer nut
With inner nut be integrated, be no different with the function of single nut, it is locking so as to lead to not；
Secondly, during fabrication, its height can have a tolerance σ 1 to inner nut, likewise, outer nut level can have
There is a tolerance σ 2, its limit tolerance is σ 1+ σ 2, if h is not more than σ 1+ σ 2, is also possible to the first plane and the occur
The tactile situation of two flat faces, so as to cause locking failure, by the grasp to machining accuracy, it is specified that h is not less than p, then can be protected
Demonstrate,prove the first plane not with the second plane contact；
Therefore, by described above, the scope for determining h is：p≤h.
Further, the external screw thread in the inner nut engages with the second internal thread in outer nut, external screw thread and second
The length of action of internal thread is not less than the reach of the 3rd internal thread；
Its reason is：The length of action of external screw thread and the second internal thread must is fulfilled for certain requirement, if too small,
Engage insecure, the easy phenomenon that screw thread stripped thread occurs；Bolt can be by the shearing force f1 and outer nut of inner nut in vibrations
Shearing force f2, and in the opposite direction, when the length of action of external screw thread and the second internal thread and the reach one of the 3rd internal thread
During cause, f1=f2, then it can reach a poised state;When the length of action of external screw thread and the second internal thread is more than spiral shell in the 3rd
During line length, f1 ＞ f2, and f1 offsets the rear i.e. f1-f2 of remaining power with f2 can become pretightning force, and fastening is played to bolt
Effect；Therefore, when the length of action of external screw thread and the second internal thread be not less than the 3rd internal thread reach when, outer nut and
Inner nut can reach a stress equalization for balancing and can guarantee that bolt to the active force of bolt, screw bolt and nut is being played tightly
Admittedly the service life of bolt is also improved while effect.
Further, the inner nut upper end offers the handle being easily installed, and handle can be steering-wheel type or card
Disc type, but it is not limited to steering-wheel type and chuck mode.
Further, the outer middle side part of the inner nut offers the first positioning hole；The outer upper end of outer nut offers
Second positioning hole；When inner nut and outer nut intermeshing after the completion of, the first positioning hole and the second positioning hole on the same axis,
Now, the first positioning hole and the second positioning hole play a part of positioning.
Further, inner nut is tightened together with outer nut by fixing bolt.
Further, when bolt is tightened, the bottom surface of bolt head does not contact with the top surface of inner nut can also realize fastening
With it is locking.
Technical scheme is used by the technical problem that the present invention further solves：A kind of stop nut application method, is adopted
With above-mentioned stop nut, it is characterised in that comprise the following steps：
First, by rotating handles, inner nut is installed in outer nut, make inner nut external screw thread and outer nut
Two internal threads engage；
Secondly, when the external screw thread of inner nut and at a fully engaged the second internal thread of outer nut, the first positioning of inner nut
Second positioning hole of hole and outer nut on the same axis, then passes through the first positioning hole and the second positioning hole will with fixing bolt
Inner nut is fixed with outer nut；
Finally, the inner nut fixed and outer nut are transported to erecting bed, the first assembly method：By bolt from interior
The upper end of nut is tightened through the 3rd internal thread on the first internal thread and outer nut on inner nut, then unclamps fixed spiral shell
Bolt, bolt is now tightened again,（When bolt is tightened, the bottom surface of bolt head does not contact with the top surface of inner nut）Complete assembling；
Second of assembly method：By bolt from the bottom of outer nut through the 3rd internal thread on outer nut, and tighten, then unclamp fixation
Bolt, bolt is now tightened again,（When bolt is tightened, the bottom surface of bolt head does not contact with the top surface of inner nut）Completion group
Dress；The first assembly method is assembled to be positive, is advantageous in that：1st, can realize it is locking, 2, convenient disassembly（Pass through rotating handles
Inner nut is taken apart）, second of assembly method is reverse-fitting, is advantageous in that：1st, can realize it is locking, 2, also have it is antitheft
Function（After bolt is installed, the handle end of inner nut is hidden, now, stranger can not be opened by normal means
Apparatus of the present invention, it is thus possible to antitheft）.
The present invention has following features compared with prior art：1st, anti-loosing effect is good, by being engaged along minus thread, realizes anti-
Pine；2nd, it is simple in construction, it can be achieved by the fastening of simple nut bolt locking；3rd, it is easy for installation, the instant dress of the present invention, account for
It is small with area, and adaptation design can be carried out according to the size of installed part；4th, optional bolt scope is wide, and the bolt that the present invention selects can
Think standard component, or non-standard component, do not limit；5th, when bolt is tightened, the bottom surface of bolt head and the top of inner nut
Face does not contact, thus the pretightning force needed is more much smaller than prior art.
The detailed construction of the present invention is further described below in conjunction with the drawings and specific embodiments.
Brief description of the drawings
Fig. 1-it is structural representation of the invention；
Fig. 2-it is inner nut schematic diagram of the invention；
Fig. 3-it is inner nut A-A sectional views of the invention；
Fig. 4-it is outer nut schematic diagram of the invention；
Fig. 5-it is fixing bolt schematic diagram of the invention.
In figure：1-outer nut, 2-inner nut, 3-fixing bolt, 4-bolt, the 11-the second internal thread, 12-the three
Internal thread, the 13-the second plane, the 14-the second positioning hole, the 21-the first internal thread, 22-external screw thread, the 23-the first plane,
24-handle, the 25-the first positioning hole.
Embodiment
Embodiment 1
As shown in drawings：A kind of stop nut, including outer nut 1 and inner nut 2, offer in first inside inner nut 2
Screw thread 21, the outer wall lower end of inner nut 2 offer external screw thread 22；The bosom of outer nut 1 offers the second internal thread 11, outer nut
1 inner bottom offers the 3rd internal thread 12；Inner nut 2 is arranged in outer nut 1.
The external screw thread 1 is consistent with the rotation direction of the second internal thread 11, the internal thread 21 of external screw thread 22 and first, the 3rd internal thread
12 it is oppositely oriented；Inner nut 2 is connected by external screw thread 22 with the second internal thread 11 of outer nut 1, bolt 4 and inner nut 2
First internal thread 21, the 3rd internal thread 12 of outer nut 1 connect.
Preferably, the first plane 23 of the bottom of inner nut 2 and the lower section of the second internal thread in outer nut 1 11 in the present embodiment
The distance between the second plane 13 be 1 times of pitch.
External screw thread 22 in the inner nut 2 engages with the second internal thread 11 in outer nut 1, preferably, this implementation
The length of action of the internal thread 11 of external screw thread 22 and second is equal to the reach of the 3rd internal thread 12 in example.
The upper end of inner nut 2 offers the handle 24 being easily installed, preferably, handle 24 is direction in the present embodiment
Disc type.
The outer middle side part of the inner nut 2 offers the first positioning hole 25；It is fixed that the outer upper end of outer nut 1 offers second
Position hole 14；After the completion of inner nut 2 and outer nut 1 are intermeshed, the first positioning hole 25 and the second positioning hole 14 are in same axis
On, now, the first positioning hole 25 and the second positioning hole 14 play a part of positioning.
The operation principle of the present invention：Inner nut 2 is connected by external screw thread 22 with the second internal thread 11 of outer nut 1, bolt 4
3rd internal thread 12 of the first internal thread 21, outer nut 1 with inner nut 2 is connected, if bolt 4 is given a shock or irregularly
The effect of power and there is loosening to be inclined to, then the tendency for driving inner nut 2 to rotate is had, but due to the internal thread of external screw thread 22 and first
21st, the 3rd internal thread 12 is oppositely oriented, is engaged so as to be formed along minus thread, and now, inner nut 2 can turn to the direction of fastening
It is dynamic, thus whole bolt and nut fastener can be increasingly tighter, reaches locking effect.
The application method of the present invention：First, by rotating handles 24, inner nut 2 is installed in outer nut 1, makes interior spiral shell
Female 2 external screw thread 22 engages with the second internal thread 11 of outer nut 1；
Secondly, when the second internal thread 11 of external screw thread 22 and the outer nut 1 of inner nut 2 is at a fully engaged, the of inner nut 2
Second positioning hole 14 of a positioning hole 25 and outer nut 1 on the same axis, then passes through the first positioning hole 25 with fixing bolt 3
Inner nut 2 and outer nut 1 are fixed with the second positioning hole 14；
Finally, the inner nut 2 fixed and outer nut 1 are transported to erecting bed, the first assembly method：By bolt 4
The 3rd internal thread 12 on the first internal thread 21 and outer nut 1 on from the upper end of inner nut 2 through inner nut 2, and tighten, then
Fixing bolt 3 is unclamped, now tightens bolt 4 again, completes assembling；Second of assembly method：By bolt 4 from the bottom of outer nut 1
Portion is tightened through the 3rd internal thread 12 on outer nut 1, then unclamps fixing bolt 3, now tightens bolt 4, completion group again
Dress；The first assembly method is assembled to be positive, and second of assembly method is reverse-fitting.
Embodiment 2
The embodiment of embodiment 2 and embodiment 1 is unanimous on the whole, and difference is：In implementing 2, the first of the bottom of inner nut 2
The distance between second plane 13 of the lower section of second internal thread 11 is 2 times of pitch in plane 23 and outer nut 1, external screw thread 22 and the
The length of action of two internal threads 11 is 1.5 times of the reach of the 3rd internal thread 12.
By embodiment it can be found that the present invention has following features compared with prior art：1st, the present invention tightens by hand
By being engaged along minus thread after bolt, bolt can not be produced loosening, anti-loosing effect is good；2nd, it is simple in construction, pass through simple spiral shell
Female bolt fastening can be achieved locking；3rd, easy for installation, the instant dress of the present invention, area occupied is small, and can be according to installed part
Size carries out adaptation design；4th, optional bolt scope is wide, and the bolt that the present invention selects can be standard component, or non-standard
Part, do not limit；5th, when bolt is tightened, the bottom surface of bolt head does not contact with the top surface of inner nut, thus the pretightning force needed
It is more much smaller than prior art.
The invention is not limited in above-mentioned embodiment, if the various changes or deformation to the present invention do not depart from the present invention
Spirit and scope, if these changes and deformation belong within the scope of the claim and equivalent technologies of the present invention, then this hair
It is bright to be also intended to comprising these changes and deformation.
Claims (1)
1. a kind of stop nut, including outer nut（1）And inner nut（2）, inner nut（2）Inside offers the first internal thread
（21）, inner nut（2）Outer wall lower end offers external screw thread（22）；Outer nut（1）Bosom offers the second internal thread（11）,
Outer nut（1）Inner bottom offers the 3rd internal thread（12）；Inner nut（2）Installed in outer nut（1）It is interior；It is characterized in that
：External screw thread（22）With the second internal thread（11）Rotation direction it is consistent, external screw thread（22）With the first internal thread（21）, the 3rd internal thread
（12）Oppositely oriented, inner nut（2）First plane of bottom（23）With outer nut（1）In the second internal thread（11）The of lower section
Two planes（13）The distance between be not less than 1 times of pitch；The inner nut（2）In external screw thread（22）With outer nut（1）In
The second internal thread（11）Engagement, external screw thread（22）With the second internal thread（11）Length of action be not less than the 3rd internal thread（12）
Reach；The inner nut（2）Upper end offers the handle being easily installed（24）；The inner nut（2）Outer middle side part
Offer the first positioning hole（25）；Outer nut（1）Outer upper end offer the second positioning hole（14）；The inner nut（2）With
Outer nut（1）Pass through fixing bolt（3）Tighten together；
The stop nut is assembled by the method comprised the following steps：
First, by tightening handle（24）, by inner nut（2）It is installed to outer nut（1）In, make inner nut（2）External screw thread
（22）With outer nut（1）The second internal thread（11）Engagement；
Secondly, inner nut is worked as（2）External screw thread（22）With outer nut（1）The second internal thread（11）When at a fully engaged, inner nut
（2）The first positioning hole（25）With outer nut（1）The second positioning hole（14）On the same axis, fixing bolt is then used（3）
Through the first positioning hole（25）With the second positioning hole（14）By inner nut（2）With outer nut（1）It is fixed；
Finally, the inner nut that will be fixed（2）With outer nut（1）Transport to erecting bed, the first assembly method：By bolt
（4）From inner nut（2）Upper end pass through inner nut（2）On the first internal thread（21）And outer nut（1）On the 3rd in spiral shell
Line（12）, and tighten, then unclamp fixing bolt（3）, bolt is now tightened again（4）, complete assembling；Second of assembling side
Formula：By bolt（4）From outer nut（1）Bottom pass through outer nut（1）On the 3rd internal thread（12）, and tighten, then unclamp solid
Determine bolt（3）, bolt is now tightened again（4）, complete assembling；The first assembly method is assembled to be positive, second of assembling
Mode is reverse-fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510525285.5A CN105041829B (en) | 2015-08-25 | 2015-08-25 | A kind of stop nut and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510525285.5A CN105041829B (en) | 2015-08-25 | 2015-08-25 | A kind of stop nut and application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105041829A CN105041829A (en) | 2015-11-11 |
| CN105041829B true CN105041829B (en) | 2018-01-02 |
Family
ID=54448680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510525285.5A Expired - Fee Related CN105041829B (en) | 2015-08-25 | 2015-08-25 | A kind of stop nut and application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105041829B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418527B (en) * | 2018-04-27 | 2021-04-20 | 南宁富桂精密工业有限公司 | Anti-dismantling structure and electronic device applying same |
| CN109737130A (en) * | 2019-02-27 | 2019-05-10 | 祝澎涛 | The asynchronous Anti-loosening nut of mariages |
| CN114810791B (en) * | 2022-05-31 | 2023-06-27 | 国网新疆电力有限公司超高压分公司 | Self-insertion type fastening structure with double threads for power transmission and transformation system and fastening method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201908932U (en) * | 2011-02-28 | 2011-07-27 | 杨清立 | Self-locking locknut assembly |
| CN102606606A (en) * | 2011-02-22 | 2012-07-25 | 汪砚秋 | Check bolt with left-handed threads |
| CN102808837A (en) * | 2012-08-21 | 2012-12-05 | 杨宇 | Never-dropping nut |
| CN202790003U (en) * | 2012-10-03 | 2013-03-13 | 石袖 | Anti-rotating locknut |
| CN202991790U (en) * | 2012-12-20 | 2013-06-12 | 温州信德电力配件有限公司 | Interlocking locking nut |
| CN204878255U (en) * | 2015-08-25 | 2015-12-16 | 钟跃荣 | Locknut |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608519A (en) * | 1983-06-27 | 1985-01-17 | 小松 実 | Double nut for preventing loosening |
-
2015
- 2015-08-25 CN CN201510525285.5A patent/CN105041829B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606606A (en) * | 2011-02-22 | 2012-07-25 | 汪砚秋 | Check bolt with left-handed threads |
| CN201908932U (en) * | 2011-02-28 | 2011-07-27 | 杨清立 | Self-locking locknut assembly |
| CN102808837A (en) * | 2012-08-21 | 2012-12-05 | 杨宇 | Never-dropping nut |
| CN202790003U (en) * | 2012-10-03 | 2013-03-13 | 石袖 | Anti-rotating locknut |
| CN202991790U (en) * | 2012-12-20 | 2013-06-12 | 温州信德电力配件有限公司 | Interlocking locking nut |
| CN204878255U (en) * | 2015-08-25 | 2015-12-16 | 钟跃荣 | Locknut |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105041829A (en) | 2015-11-11 |
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