CN108757706A - A kind of anti-loose connection bolt assembly - Google Patents
A kind of anti-loose connection bolt assembly Download PDFInfo
- Publication number
- CN108757706A CN108757706A CN201810931325.XA CN201810931325A CN108757706A CN 108757706 A CN108757706 A CN 108757706A CN 201810931325 A CN201810931325 A CN 201810931325A CN 108757706 A CN108757706 A CN 108757706A
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- bolt
- screw thread
- fastening nut
- screw
- loose
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- 230000002457 bidirectional effect Effects 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004993 binary fission Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 125000006850 spacer group Chemical group 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/36—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt with conical locking parts, which may be split, including use of separate rings co-operating therewith
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The present invention relates to machanical fastener fields, disclose a kind of anti-loose connection bolt assembly, including：First bolt, fastening nut and the second bolt, the first screw thread is equipped on the outside of the screw rod of first bolt, and it is internal through there is the first screw hole, second screw thread reversed with the first screw thread is equipped on the inside of first screw hole, the screw thread of first screw thread and fastening nut matches, the first end of fastening nut has the first pyramidal structure, the screw rod of second bolt is equipped with third screw thread, and third screw thread matches with the second screw thread, the head of second bolt is equipped with anti-loose structure, anti-loose structure is hollow structure, and the end edge of hollow structure is the second pyramidal structure, second pyramidal structure matches with the first pyramidal structure.While the present invention realizes bidirectional helical fastening, is contacted with the pyramidal structure of the second bolt using fastening nut, solve the problems, such as that fastening nut outward turning loosens, reasonable design of the present invention is simple in structure, and fastening performance is good, convenient for disassembly and assembly.
Description
Technical field
The present invention relates to machanical fastener technical fields, more particularly to a kind of anti-loose connection bolt assembly.
Background technology
The component that bolt or screw assembly are used for playing the role of fastening, if the object loosening fastened will produce it is serious after
Fruit, such as the bolt of aircraft, rail, lathe transmission mechanism connect, and serious accident can be caused to occur.So preventing from connecting
Component loosens the project of always people's research.The reason of nut bolt loosens has very much, such as in the case of sharp pounding, or
Due under alternating load or when temperature change is higher, since the body of bolt and fastener changes, leading to nut rubbing surface
On normal pressure reduce or disappear, cause to generate on rubbing surface and promote what nut rotated in terms of loosening to loosen torque, cause spiral shell
Mother loosens.The mode for preventing bolt looseness common at present has：Double nut compresses, bolt and nut inserts key, bolt and nut trepanning is inserted
Locking metallic rod, winding iron wire, the occlusion of bolt and nut latch or direct gluing or soldering etc. are connect, but the above method is due to that can not carry
For effectively preventing the opposing torque of bolt looseness, therefore effect is bad.The eccentric stop nut of country's Introduced from Japan at present, by
It is complicated higher technical using operation needs in processing, it promotes and bad.It is capable of providing the scheme of opposing torque at present, is to adopt
With the structure of positive and negative two kinds of screw threads, such as Chinese patent, a kind of check bolt (application number is disclosed：CN00202235.4)：Its structure is
It can be to needs when either spacer for bolt is combined due to locking reversed nut or bolt operation using the nut of ordinary construction
One torque reversely loosened of bolt of fastening, therefore loosening for work nut is had resulted in operation.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of anti-loose connection bolt assembly, solves screw bolt and nut in the prior art and loosen
The problem of.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of anti-loose connection bolt assemblies, including：First bolt,
The screw rod outside of fastening nut and the second bolt, first bolt is equipped with the first screw thread, and in the screw rod of first bolt
Portion is equipped with the first screw hole, and second screw thread reversed with first screw thread, first screw thread are equipped on the inside of first screw hole
Matching with the screw thread of the fastening nut, the first end of the fastening nut has the first pyramidal structure axially protruded,
First pyramidal structure is that the direction extended axially outwardly gradually tapers up, and the screw rod of second bolt is equipped with third spiral shell
Line, and the third screw thread matches with second screw thread, the one end in the head of second bolt direction axially inward
Equipped with anti-loose structure, the anti-loose structure is hollow structure, and the end edge of the hollow structure is the second pyramidal structure, institute
The second pyramidal structure is stated with first pyramidal structure to match.
Wherein, the second end of the fastening nut is flat construction.
Wherein, further include the first gasket and the second gasket, first gasket and second gasket are set to described first
Between the head of bolt and the second end of the fastening nut.
Wherein, the depth of first screw hole is through entire first bolt.
Wherein, the hollow structure of second bolt and the cross of first pyramidal structure and second pyramidal structure
Section is circle.
Wherein, second bolt is interior angle screw or exterior angle screw, and the cross section shape on the head of second bolt
Shape is regular polygon.
Wherein, the first pyramidal structure upper edge is radially provided with crack.
Wherein, the crack number is multiple.
Wherein, the anti-loose structure of second bolt covers the first pyramidal structure of the fastening nut completely.
Wherein, the anti-loose structure of the head of second bolt and second bolt is dismountable separate structure.
(3) advantageous effect
A kind of anti-loose connection bolt assembly provided by the invention is screwed in tight respectively using the bidirectional helical on the first bolt
Gu nut and the second bolt are realized bidirectional helical fastening, and are contacted with the pyramidal structure of the second bolt using fastening nut, when
When second bolt screws, the fastening nut that opposing torque is not enough to have fastened originally loosens, and solves due to the second bolt
The problem of reversely screwing in after touching fastening nut, causing fastening nut outward turning to loosen to fastening nut opposing torque, and
The anti-loose structure of second bolt is hollow structure, and the outer cover of hollow structure can also protect the port of fastening nut and the first bolt not
It can intake and be destroyed by external force.The anti-loose connection bolt assembly reasonable design of one kind provided by the invention, it is simple in structure, tightly
Solidity can be good, convenient for disassembly and assembly.
Description of the drawings
Fig. 1 is a kind of sectional view of anti-loose connection bolt assembly of the present invention；
Fig. 2 is a kind of side structure schematic diagram of anti-loose connection bolt assembly of the present invention；
Fig. 3 is the sectional view of the first bolt of the invention；
Fig. 4 is the side structure schematic diagram of the first bolt of the invention；
Fig. 5 is the sectional view of fastening nut of the present invention；
Fig. 6 is the side structure schematic diagram of fastening nut of the present invention；
Fig. 7 is the sectional view of the second bolt of the invention；
Fig. 8 is the side structure schematic diagram of the second bolt of the invention.
In figure, the 1, first bolt；111, the first screw thread；12, the first screw hole, the 121, second screw thread；2, the first gasket；30 Hes
31, fastening apparatus；4, the second gasket；5, fastening nut；512, the first pyramidal structure；513, crack；6, the second bolt；611,
The head of two bolts；612, anti-loose structure；613, the second pyramidal structure；621, third screw thread.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As Figure 1-Figure 8, the present invention discloses a kind of anti-loose connection bolt assembly, including：First bolt 1, fastening spiral shell
The screw rod outside of mother 5 and the second bolt 6, first bolt 1 is equipped with the first screw thread 111, and in the screw rod of first bolt 1
Portion is equipped with the first screw hole 12, and first screw hole, 12 inside is equipped with second screw thread 121 reversed with first screw thread 111, institute
The screw thread for stating the first screw thread 111 and the fastening nut 5 matches, and the first end of the fastening nut 5, which has, to be axially protruded
The first pyramidal structure 512, first pyramidal structure 512 is that the direction extended axially outwardly gradually tapers up, described second
The screw rod of bolt 6 is equipped with third screw thread 621, and the third screw thread 621 matches with second screw thread 121, and described second
The head 611 of bolt axially inward direction one end be equipped with anti-loose structure 612, the anti-loose structure 612 be hollow structure, and
The end edge of the hollow structure is the second pyramidal structure 613, second pyramidal structure 613 and first pyramidal structure
512 match.
Specifically, the thread parameters such as the first screw thread 111 and the rotation direction of the screw thread of fastening nut 5 and screw pitch are consistent, it can
Enough matchings screw in, and the thread parameters such as third screw thread 621 and the rotation direction of the second screw thread 121 and screw pitch are consistent, can match rotation
Enter.Fastening apparatus 30 and 31 is arranged between the head and fastening nut 5 of the first bolt 1, and the first bolt 1 passes through the first screw thread
111 are mutually matched screw-ins with the internal thread of fastening nut 5, and by third screw thread 621, (third screw thread 621 is outer spiral shell to the second bolt 6
Line) with the second screw thread 121 of the first screw hole 12 it is mutually matched screw-ins, reversely because of the first screw thread 111 and the second screw thread 121, utilization
The mode that bidirectional helical screws in, avoids loosening.Such as first screw thread 111 be left-handed, the second screw thread 121 is dextrorotation, can also the
One screw thread 111 is dextrorotation, and the second screw thread 121 is left-handed setting.Due to the second bolt 6 and fastening nut 5 screw-in direction on the contrary,
Therefore when screwing, the second bolt 6 can give fastening nut 5 one opposing torques, lead to loosening for bolt assembly, the present invention in order to
This problem is avoided, pyramidal structure is made into the contact position of fastening nut 5 and the second bolt 6, pyramidal structure, which suffers oppression, deforms locking
Fastening nut 5 and the first bolt 1, due to being in contact at the taper of fastening nut 5 at this time, opposing torque be not enough to by
The fastening nut 5 originally fastened loosens, and solves after touching fastening nut 5 due to 6 reversed screw-in of the second bolt, to tight
Gu 5 opposing torque of nut and the possibility for causing 5 outward turning of fastening nut to loosen.As shown in Figure 1, the first pyramidal structure 512 is by main view
Figure is viewed as protruding axially outward, and the second pyramidal structure 613 matches with the first pyramidal structure 512, the first pyramidal structure
512 is completely the same with the gradient and height equidimension of the second pyramidal structure 613, realizes matching, the long side of the first pyramidal structure 512
Far from the second bolt 6, short side is close to the second bolt 6, and the long side of the second hollow pyramidal structure 613 is close to fastening nut 5, short side
Far from fastening nut 5.After fastening nut 5 and the first bolt 1 are locked, the first spiral shell is reversely screwed in the continuation of the second bolt 6
Until being completely attached to fastening nut 5, the entire bolt fastening course of work terminates the screw rod of bolt 1.When fastening apparatus 30 and 31 is sent out
It, will be anti-to 6 one, the second bolt by the close contact of the two when giving birth to strenuous vibration and causing fastening nut 5 that loose moment occurs
To the Tightening moment screwed, the more big Tightening moment reversely screwed of torque of loosening is also bigger, and the second bolt 6 is caused completely can not
It loosens.Be in particular in that the gradient of the first pyramidal structure 512 is slightly less than the second pyramidal structure 613, the first pyramidal structure 512 by
To anti-loose structure pressure when, will produce small deflection, after compression, force the gradient and second of the first pyramidal structure 512
The gradient of pyramidal structure 613 is roughly the same.And since the anti-loose structure 612 of the second bolt 6 is hollow structure, hollow structure
Outer cover can also protect fastening nut 5 and the port of the first bolt 1 not to intake and be destroyed by external force.
A kind of anti-loose connection bolt assembly provided by the invention is screwed in tight respectively using the bidirectional helical on the first bolt
Gu nut and the second bolt are realized bidirectional helical fastening, and are contacted with the pyramidal structure of the second bolt using fastening nut, when
When second bolt screws, the fastening nut that opposing torque is not enough to have fastened originally loosens, and solves due to the second bolt
The problem of reversely screwing in after touching fastening nut, causing fastening nut outward turning to loosen to fastening nut opposing torque, and
The anti-loose structure of second bolt is hollow structure, and the outer cover of hollow structure can also protect the port of fastening nut and the first bolt not
It can intake and be destroyed by external force.The anti-loose connection bolt assembly reasonable design of one kind provided by the invention, it is simple in structure, tightly
Solidity can be good, convenient for disassembly and assembly.
As shown in figure 5, the second end of the fastening nut 5 is flat construction.Specifically, the second end of fastening nut 5 with
The end construction of plain nut is consistent, is screwed in towards the head of the first bolt 1, the head collective effect with the first bolt 1, folder
Tight fastening apparatus 30 and 31.
As shown in Figure 1, further including the first gasket 2 and the second gasket 4, first gasket 2 and second gasket 4 are set to
Between the head and the second end of the fastening nut 5 of first bolt 1.First gasket 2 is arranged in fastening apparatus 30,31 and
Between the head of first bolt 1, the second gasket 4 is arranged between fastening apparatus 30,31 and fastening nut 5, avoids wearing this spiral shell
Bolt assembly and fastening apparatus.According to actual needs, it can repeat to increase or decrease the quantity of gasket.
Wherein, the depth of first screw hole 12 is through entire first bolt 1.According to actual conditions, the first spiral shell
The depth in hole 12 can also be shorter than entire first bolt 1, i.e. the first screw hole 12 is deep from the screw rod end of the first bolt 1 to head
Enter, as shown in figure 3, the first screw hole 12 is entire first bolt of non-through 1.
Wherein, the hollow structure of second bolt 6 and first pyramidal structure 512 and second pyramidal structure
613 cross section is circle.As shown in Fig. 3-Fig. 8, circle is processed into the cross section of above structure by the present embodiment, does not interfere
The normal screw-in of fastening nut 5 and the second bolt 6.
As shown in Figure 7 and Figure 8, the cross-sectional shape on the head 611 of second bolt is regular polygon.Specifically, the
The cross-sectional shape on the head 611 of two bolts can be quadrangle, hexagonal or other carry out tightening operation convenient for the tools such as spanner
Shape.
Wherein, 512 upper edge of the first pyramidal structure is radially provided with crack 513, and playing the first pyramidal structure 512 can fit
Spend the effect of deformation.Preferably, 513, crack number is multiple.Specifically, according to actual needs, such crack 513 to
It is two less, and forms the arbitrary split form more than or equal to binary fission.Preferably, as shown in Figure 5 and Figure 6, crack number is
Four, the first pyramidal structure 512 constitutes the split form of quadripartion.
As shown in Figure 1 and Figure 7, the anti-loose structure 612 of second bolt 6 is by the first taper knot of the fastening nut 5
Structure 512 covers completely, and fastening nut 5 and the port of the first bolt 1 can be protected not to intake and be destroyed by external force.
As shown in fig. 7, the head 611 of second bolt and the anti-loose structure 612 of second bolt 6 are dismountable
Separate structure.Specifically, the head 611 of the second bolt and the anti-loose structure 612 of second bolt 6 can utilize buckle etc. even
The mode of connecing is fixed and dismantles.
A kind of anti-loose connection bolt assembly provided by the invention is screwed in tight respectively using the bidirectional helical on the first bolt
Gu nut and the second bolt are realized bidirectional helical fastening, and are contacted with the pyramidal structure of the second bolt using fastening nut, when
When second bolt screws, the fastening nut that opposing torque is not enough to have fastened originally loosens, and solves due to the second bolt
The problem of reversely screwing in after touching fastening nut, causing fastening nut outward turning to loosen to fastening nut opposing torque, and
The anti-loose structure of second bolt is hollow structure, and the outer cover of hollow structure can also protect the port of fastening nut and the first bolt not
It can intake and be destroyed by external force.The anti-loose connection bolt assembly reasonable design of one kind provided by the invention, it is simple in structure, tightly
Solidity can be good, convenient for disassembly and assembly.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of anti-loose connection bolt assembly, which is characterized in that including：First bolt, fastening nut and the second bolt, it is described
It is equipped with the first screw thread on the outside of the screw rod of first bolt, and the inside screw of first bolt is equipped with the first screw hole, described first
Second screw thread reversed with first screw thread, the screw thread phase of first screw thread and the fastening nut are equipped on the inside of screw hole
Match, it is in an axial direction that the first end of the fastening nut, which has the first pyramidal structure axially protruded, first pyramidal structure,
Outwardly extending direction gradually tapers up, and the screw rod of second bolt is equipped with third screw thread, and the third screw thread and described the
Two screw threads match, and the one end in the head of second bolt direction axially inward is equipped with anti-loose structure, the anti-loose structure
For hollow structure, and the end edge of the hollow structure is the second pyramidal structure, second pyramidal structure and described first
Pyramidal structure matches.
2. anti-loose connection bolt assembly as described in claim 1, which is characterized in that the second end of the fastening nut is flat
Straight structure.
3. anti-loose connection bolt assembly as claimed in claim 2, which is characterized in that further include the first gasket and the second pad
Piece, first gasket and second gasket be set to head and the fastening nut of first bolt second end it
Between.
4. anti-loose connection bolt assembly as described in claim 1, which is characterized in that the depth of first screw hole be through
Entire first bolt.
5. anti-loose connection bolt assembly as described in claim 1, which is characterized in that the hollow structure of second bolt with
And the cross section of first pyramidal structure and second pyramidal structure is circle.
6. anti-loose connection bolt assembly as described in claim 1, which is characterized in that second bolt be interior angle screw or
Exterior angle screw, and the cross-sectional shape on the head of second bolt is regular polygon.
7. anti-loose connection bolt assembly as described in claim 1, which is characterized in that in first pyramidal structure radially
Equipped with crack.
8. anti-loose connection bolt assembly as claimed in claim 7, which is characterized in that the crack number is multiple.
9. anti-loose connection bolt assembly as described in claim 1, which is characterized in that the anti-loose structure of second bolt will
First pyramidal structure of the fastening nut covers completely.
10. the anti-loose connection bolt assembly as described in any one of claim 1-9, which is characterized in that second spiral shell
The anti-loose structure of the head of bolt and second bolt is dismountable separate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810931325.XA CN108757706A (en) | 2018-08-15 | 2018-08-15 | A kind of anti-loose connection bolt assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810931325.XA CN108757706A (en) | 2018-08-15 | 2018-08-15 | A kind of anti-loose connection bolt assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757706A true CN108757706A (en) | 2018-11-06 |
Family
ID=63970135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810931325.XA Pending CN108757706A (en) | 2018-08-15 | 2018-08-15 | A kind of anti-loose connection bolt assembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN108757706A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648364A (en) * | 2018-11-30 | 2019-04-19 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of dismountable complete location structure |
| CN109714924A (en) * | 2019-02-21 | 2019-05-03 | 山西全安新技术开发有限公司 | It is a kind of for fastening the method and device of electric apparatus for explosive atmospheres cavity |
| CN110454488A (en) * | 2019-07-23 | 2019-11-15 | 瑞通机械张家口有限公司 | A kind of compound nut that automatically lock is anti-loosening |
| CN111536131A (en) * | 2020-05-12 | 2020-08-14 | 三一重机有限公司 | Bolt locking structure |
| CN112576605A (en) * | 2020-12-28 | 2021-03-30 | 河南航天精工制造有限公司 | Nut anti-loosening assembly and anti-loosening bolt and nut assembly |
| CN112628268A (en) * | 2020-12-25 | 2021-04-09 | 航天精工股份有限公司 | Bolt and nut assembly capable of effectively preventing disassembly |
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| CN105114436A (en) * | 2015-08-18 | 2015-12-02 | 孟周强 | Interlocked stop nut assembly |
| CN105626660A (en) * | 2016-03-25 | 2016-06-01 | 罗灿 | Independent controllable elastic sleeve lock nut |
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| CN208778455U (en) * | 2018-08-15 | 2019-04-23 | 吴雁南 | A kind of anti-loose connection bolt assembly |
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| JP2003042128A (en) * | 2001-05-25 | 2003-02-13 | Shinya Uehara | Locking nut and locking fastening structure using the same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648364A (en) * | 2018-11-30 | 2019-04-19 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of dismountable complete location structure |
| CN109714924A (en) * | 2019-02-21 | 2019-05-03 | 山西全安新技术开发有限公司 | It is a kind of for fastening the method and device of electric apparatus for explosive atmospheres cavity |
| CN109714924B (en) * | 2019-02-21 | 2024-06-04 | 山西全安新技术开发有限公司 | Method and device for fastening explosion-proof electrical equipment cavity |
| CN110454488A (en) * | 2019-07-23 | 2019-11-15 | 瑞通机械张家口有限公司 | A kind of compound nut that automatically lock is anti-loosening |
| CN111536131A (en) * | 2020-05-12 | 2020-08-14 | 三一重机有限公司 | Bolt locking structure |
| CN112628268A (en) * | 2020-12-25 | 2021-04-09 | 航天精工股份有限公司 | Bolt and nut assembly capable of effectively preventing disassembly |
| CN112628268B (en) * | 2020-12-25 | 2023-02-24 | 航天精工股份有限公司 | Bolt and nut assembly capable of effectively preventing disassembly |
| CN112576605A (en) * | 2020-12-28 | 2021-03-30 | 河南航天精工制造有限公司 | Nut anti-loosening assembly and anti-loosening bolt and nut assembly |
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Application publication date: 20181106 |