CN109296622A - A kind of anti-loosening structure for thread connection under space constraint - Google Patents
A kind of anti-loosening structure for thread connection under space constraint Download PDFInfo
- Publication number
- CN109296622A CN109296622A CN201811496443.9A CN201811496443A CN109296622A CN 109296622 A CN109296622 A CN 109296622A CN 201811496443 A CN201811496443 A CN 201811496443A CN 109296622 A CN109296622 A CN 109296622A
- Authority
- CN
- China
- Prior art keywords
- nut
- locking
- loosening
- spanner
- thread connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000003199 nucleic acid amplification method 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/06—Spanners; Wrenches with rigid jaws of socket type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/16—Handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25G—HANDLES FOR HAND IMPLEMENTS
- B25G1/00—Handle constructions
- B25G1/04—Handle constructions telescopic; extensible; sectional
- B25G1/043—Handle constructions telescopic; extensible; sectional for screwdrivers, wrenches or spanners
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Plates (AREA)
Abstract
A kind of anti-loosening structure for thread connection the present invention relates to anti-loosening structure for thread connection, under especially a kind of manipulation space constraint.A kind of anti-loosening structure for thread connection under space constraint, including anti-loosening screw, nut, locking nut, it further include spanner, described spanner one end is provided with the interior type groove I with nut, locking nut form fit, the depth of interior type groove I is consistent with the depth that anti-loosening screw is screwed into, the other end is hand-held part, for fastening nut, locking nut and anti-loosening screw；The nut, locking nut are spirally connected with anti-loosening screw.The present invention has the advantages that 1, ensure that thread connection anti-loose；It is locked simultaneously by non-screw flight, but epitaxial apparatus, screw flight is not damaged, ensure that the reliability of system.2, the double-deck locking insurance, effect are good.3, space requirement is low, can be implemented in the reachable range of straight line.4, low manufacture cost simplifies locking insurance process, to improve plant maintenance.
Description
Technical field
A kind of thread connection anti-loose the present invention relates to anti-loosening structure for thread connection, under especially a kind of manipulation space constraint
Structure.
Background technique
It is that guarantee section system such as landing gear mechanism, engine are installed, in airframe structure docking in modern aircraft design
The reliability of threaded connection usually carries out locking insurance to threaded connection.Traditional thread connection anti-loose mode include split pin,
Rush point, locking plate, washer, locking nut, fuse etc..It is locking in addition to partially not dismantling connection in above-mentioned locking mode
Outside, split pin is limited its application because open slot position is non-adjustable；Nut, locking plate, washer, locking nut are in important load spiral shell
Exist in line connection and loosen risk, therefore is led in aircraft takeoffs and landings frame mechanism, engine installation etc. by big overload, vibration environment
Frequently with the mode of fuse, but fuse is locking needs manipulation space, and the peace of support engine is especially in airplane design
In the thread connection anti-loose for filling fixed mechanism, bolt and nut is very inner with respect to body position, and manpower can not touch, conventional threads
Connection anti-loose mode is not applicable, to solve problems, needs to design the anti-loose method under a kind of space constraint, both can guarantee
Locking reliability, and maintain easily.
Summary of the invention
Present invention aim to address problems of the prior art, provide a kind of locking high reliablity, it is easy to maintain,
It can solve the anti-loosening structure for thread connection under the space constraint of space constraint.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of thread connection anti-loose under space constraint
Structure, including anti-loosening screw, nut, locking nut, further include spanner, and described spanner one end is provided with and nut, locking nut
The depth of the interior type groove I of form fit, interior type groove I is consistent with the depth that anti-loosening screw is screwed into, and the other end is hand-held part, and being used for will
Nut, locking nut and anti-loosening screw fasten；The nut, locking nut are spirally connected with anti-loosening screw.
Preferably, its axial direction is provided with extended segment in the rod end of the anti-loosening screw, is arranged on the extended segment
There is locking portion；One end of locking nut is provided with tight lock part, and locking portion forms locking with tight lock part.
Preferably, the locking portion is the annular knurl process layer of extended segment outer surface, and the outer diameter of extended segment is less than or equal to anti-
The outer diameter of the loose screw rod body of rod.
Preferably, the tight lock part is several auricles being laid on the circumference of locking nut one end, and auricle is along locking nut
It is axially extending and gradually drawn close to axle center.
Preferably, the locking nut is integrally formed.
Preferably, the spanner includes box spanner and extends spanner, and interior type groove I is set to one end of box spanner, separately
One end is provided with and extends the matched interior type groove II of spanner, extend spanner as hand-held part with box spanner is self-locking docks.
Preferably, the part for extending type groove II in spanner insertion is polyhedron.
Preferably, the interior type groove I is connected to interior type groove II.
Principle: anti-loosening screw passes through the screw hole for needing connected components, and nut connects the extension spanner of box spanner by top
Tighten, according still further to the screwing force being pre-designed by locking nut screwing on anti-loosening screw, disassembly process is opposite with assembling process.
Wherein, for anti-loosening screw compared with classic screw, extension increases one section of locking extended segment, carries out on increased locking extended segment
Annular knurl processing, locking nut and anti-loosening screw form " self-locking nut " locking insurance, form " double nut " locking insurance with nut.
Box spanner presses nut and locking nut state determines I form of interior type groove, and guarantee can individually tighten nut and locking nut, the two
It is independent of each other.
The present invention has the advantages that
1, " double nut is self-locking " and " self-locking nut " double insurance is utilized, ensure that thread connection anti-loose；Pass through non-screw rod simultaneously
Screw-threaded coupling, but epitaxial apparatus, do not damage screw flight, ensure that the reliability of system.
2, the double-deck locking insurance, effect are good.
3, space requirement is low, can be implemented in the reachable range of straight line.
4, low manufacture cost simplifies locking insurance process, to improve plant maintenance.
Detailed description of the invention
Fig. 1 is explosive view of the embodiment of the present invention；
Fig. 2 is anti-loosening screw structural schematic diagram in Fig. 1；
Fig. 3 is lock nut structure diagram in Fig. 1；
Fig. 4 is Fig. 1 middle sleeve spanner structure schematic diagram；
Fig. 5 is nut of the embodiment of the present invention and anti-loosening screw screwing structure schematic diagram；
Fig. 6 is locking nut of the embodiment of the present invention, nut and anti-loosening screw screwing structure schematic diagram；
In figure, 1, anti-loosening screw；2, nut；3, locking nut；4, box spanner；5, extend spanner.
Specific embodiment
1-6 is further described the present invention with reference to the accompanying drawing: as shown in Figure 1, the screw thread under a kind of space constraint connects
Loose structure is taken over control, is made of anti-loosening screw 1, nut 2, locking nut 3, box spanner 4 and extension spanner 5.
As shown in Fig. 2, the screw thread tightened for nut 2 and locking nut 3 is processed on anti-loosening screw 1, in locking spiral shell
1 end of the bar setting extended segment locking for locking nut 3, the processing of extended segment surface knurling, the outer diameter of extended segment are less than locking
The outer diameter of the screw rod body of rod.1 specification of anti-loosening screw, screw thread distribution and locking extended segment size are arranged by bindiny mechanism's coupling mechanism force
It is required that, nut 2 and 3 size of locking nut determine.
As shown in figure 3, locking nut 3 is integrated design, one end is the tightening portion tightened with anti-loosening screw 1, and the other end is
Tight lock part, tight lock part be it is uniformly distributed in several auricles on locking nut screwing portion side circumference, auricle is along locking screw mother's axle
It gradually draws close to extension and to axle center.Locking nut 3 is tightened on 1 screw thread of anti-loosening screw, and it is locking to form " double nut " with nut 2
Form；Knurled surface on 3 tight lock part of locking nut and 1 extended segment of anti-loosening screw squeezes to form 3 anti-back power of locking nut, locks
Tight nut and anti-loosening screw form " self-locking nut " locking dual fail-safe, and locking functions are reliable.
As shown in figure 4, box spanner 4 is for tightening nut 2 and locking nut 3, according to the outer of nut 2 and locking nut 3
Interior type groove is arranged in wide size, and the extension of anti-loosening screw 1 fragment position determines 3 depth of box spanner, box spanner when being tightened according to nut 2
4 other ends are provided with and extend the matched interior type groove II of spanner 5, routinely self-locking between box spanner 4 and extension spanner 5 to dock
Bindiny mechanism is set.
In order to keep structure simpler, interior type groove is connected to interior type groove II.
As shown in Figure 1, extending spanner 5 to be inserted into the end of type groove II in box spanner 4 is hexahedron, it is used for and box spanner
Type groove II is formed self-locking in 4, prevents to relatively rotate, and the other end is hand-held part, is held for staff；Extend spanner 5
For the reachable operation under space constraint, is determined by locking target depth and extend 5 size of spanner.
As seen in figs. 5-6, when locking thread connects, anti-loosening screw 1, which passes through, tightens interlayer, and connection extends spanner 5 and sleeve
Nut 2 is placed in box spanner 4 by spanner 4, is tightened along 1 screw thread of anti-loosening screw, and screw-down torque is determined according to interlayer intensity；Again will
Locking nut 3 is placed in box spanner 4, tightens along 1 screw thread of anti-loosening screw and contacts until with nut 2,3 tight lock part auricle of locking nut
It is formed with 1 knurling layer of anti-loosening screw locking.
It is opposite with locking thread connection procedure that screw thread unscrews process.
Present invention utilizes " double nut " of nut and locking nut locking and " the self-locking spiral shell of locking nut and anti-loosening screw
The mode of the locking combination of mother " establishes reliable locking form；Using box spanner and extend key length variation, realizes certain
Threaded connection under a little space constraints.It is simple with structure, reliable, the high feature of maintainability.
Above-described embodiment is only the preferred embodiment of the present invention, is not construed as limiting the invention.Locking nut with
The anti-loose structure of anti-loosening screw can also be the protrusion being mutually matched and groove etc..Those of ordinary skill in the art are of the invention
On the basis of done any amplification, deformation be within the scope of the invention.
Claims (8)
1. the anti-loosening structure for thread connection under a kind of space constraint, it is characterised in that: including anti-loosening screw, nut, locking nut,
Further include spanner, described spanner one end be provided with nut, locking nut form fit interior type groove I, the depth of interior type groove I with
The depth that anti-loosening screw is screwed into nut is consistent, and the other end is hand-held part, for fastening nut, locking nut and anti-loosening screw；
The nut, locking nut are spirally connected with anti-loosening screw.
2. the anti-loosening structure for thread connection under space constraint according to claim 1, it is characterised in that: in the locking spiral shell
The rod end of bar is provided with extended segment along its axial direction, and locking portion is provided on the extended segment；One end of locking nut is arranged
There is tight lock part, locking portion forms locking with tight lock part.
3. the anti-loosening structure for thread connection under space constraint according to claim 2, it is characterised in that: the locking portion is
The annular knurl process layer of extended segment outer surface, the outer diameter of extended segment are less than or equal to the outer diameter of the anti-loosening screw body of rod.
4. the anti-loosening structure for thread connection under space constraint according to claim 3, it is characterised in that: the tight lock part is
Several auricles being laid on the circumference of locking nut one end, auricle is axially extending along locking nut and gradually draws close to axle center.
5. the anti-loosening structure for thread connection under space constraint according to claim 1, it is characterised in that: the locking nut
It is integrally formed.
6. the anti-loosening structure for thread connection under space constraint according to claim 1, it is characterised in that: the spanner includes
Box spanner and extension spanner, interior type groove I are set to one end of box spanner, and the other end is provided with matched interior with extension spanner
Type groove II, extend spanner as hand-held part with box spanner is self-locking docks.
7. the anti-loosening structure for thread connection under space constraint according to claim 6, it is characterised in that: the extension spanner
The part of type groove II is polyhedron in being inserted into.
8. the anti-loosening structure for thread connection under space constraint according to claim 6 or 7, it is characterised in that: the inner mold
Slot I is connected to interior type groove II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811496443.9A CN109296622A (en) | 2018-12-07 | 2018-12-07 | A kind of anti-loosening structure for thread connection under space constraint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811496443.9A CN109296622A (en) | 2018-12-07 | 2018-12-07 | A kind of anti-loosening structure for thread connection under space constraint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109296622A true CN109296622A (en) | 2019-02-01 |
Family
ID=65142765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811496443.9A Pending CN109296622A (en) | 2018-12-07 | 2018-12-07 | A kind of anti-loosening structure for thread connection under space constraint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109296622A (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0001935A1 (en) * | 1977-11-09 | 1979-05-16 | V.S.I. Corporation | Threaded fasteners, threaded fastener elements and fastening processes using same |
| GB8514937D0 (en) * | 1985-06-13 | 1985-07-17 | Wallace S D C | Lock fastener |
| US5145300A (en) * | 1990-02-15 | 1992-09-08 | Air Industries, Inc. | Deformable locking fastener and method of use |
| CN2421442Y (en) * | 2000-06-05 | 2001-02-28 | 石家庄车辆厂 | Anti-theft locknut and special fastening sleeve |
| JP2001082433A (en) * | 1999-09-08 | 2001-03-27 | Nippon Petrochem Co Ltd | Rust prevention container fittings for bolted joints |
| CN2474785Y (en) * | 2000-05-18 | 2002-01-30 | 孙运国 | Antitheft bolt device and its special spanner |
| CN1349056A (en) * | 2000-10-18 | 2002-05-15 | 哈德洛克工业株式会社 | Anti-loosen screw nut component |
| CN1839266A (en) * | 2003-08-22 | 2006-09-27 | 共创有限会社 | Lock nut |
| CN1987134A (en) * | 2006-12-14 | 2007-06-27 | 江苏江成冶金设备制造有限公司 | Threaded connection anti-loose fastener |
| CN2924134Y (en) * | 2006-03-15 | 2007-07-18 | 张维玉 | Conical self-locking stepless stopping nut |
| CN202188000U (en) * | 2011-08-04 | 2012-04-11 | 德阳电业局 | Double-nut connecting bolt |
| CN203254352U (en) * | 2013-03-29 | 2013-10-30 | 国家电网公司 | Anti-loosening torque wrench |
| CN203560260U (en) * | 2013-06-28 | 2014-04-23 | 眉山南车紧固件科技有限公司 | Threaded extrusion anti-loosing fastening connection system |
| CN104196864A (en) * | 2014-08-22 | 2014-12-10 | 无锡市第二标准件制造有限公司 | Double-nut check bolt |
| CN204327712U (en) * | 2014-11-28 | 2015-05-13 | 长城汽车股份有限公司 | Self-locking nut and self-locking device |
| CN205207391U (en) * | 2015-10-21 | 2016-05-04 | 芜湖伯拉电子商贸有限公司 | Bush anti loosening structure |
| CN206206371U (en) * | 2016-09-30 | 2017-05-31 | 中国南方航空工业(集团)有限公司 | For the anti-loosing connecting structure of aircraft engine parts assembly connection |
| CN206918008U (en) * | 2017-06-13 | 2018-01-23 | 宁波群力紧固件制造有限公司 | A kind of check bolt |
-
2018
- 2018-12-07 CN CN201811496443.9A patent/CN109296622A/en active Pending
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0001935A1 (en) * | 1977-11-09 | 1979-05-16 | V.S.I. Corporation | Threaded fasteners, threaded fastener elements and fastening processes using same |
| GB8514937D0 (en) * | 1985-06-13 | 1985-07-17 | Wallace S D C | Lock fastener |
| US5145300A (en) * | 1990-02-15 | 1992-09-08 | Air Industries, Inc. | Deformable locking fastener and method of use |
| JP2001082433A (en) * | 1999-09-08 | 2001-03-27 | Nippon Petrochem Co Ltd | Rust prevention container fittings for bolted joints |
| CN2474785Y (en) * | 2000-05-18 | 2002-01-30 | 孙运国 | Antitheft bolt device and its special spanner |
| CN2421442Y (en) * | 2000-06-05 | 2001-02-28 | 石家庄车辆厂 | Anti-theft locknut and special fastening sleeve |
| CN1349056A (en) * | 2000-10-18 | 2002-05-15 | 哈德洛克工业株式会社 | Anti-loosen screw nut component |
| CN1839266A (en) * | 2003-08-22 | 2006-09-27 | 共创有限会社 | Lock nut |
| CN2924134Y (en) * | 2006-03-15 | 2007-07-18 | 张维玉 | Conical self-locking stepless stopping nut |
| CN1987134A (en) * | 2006-12-14 | 2007-06-27 | 江苏江成冶金设备制造有限公司 | Threaded connection anti-loose fastener |
| CN202188000U (en) * | 2011-08-04 | 2012-04-11 | 德阳电业局 | Double-nut connecting bolt |
| CN203254352U (en) * | 2013-03-29 | 2013-10-30 | 国家电网公司 | Anti-loosening torque wrench |
| CN203560260U (en) * | 2013-06-28 | 2014-04-23 | 眉山南车紧固件科技有限公司 | Threaded extrusion anti-loosing fastening connection system |
| CN104196864A (en) * | 2014-08-22 | 2014-12-10 | 无锡市第二标准件制造有限公司 | Double-nut check bolt |
| CN204327712U (en) * | 2014-11-28 | 2015-05-13 | 长城汽车股份有限公司 | Self-locking nut and self-locking device |
| CN205207391U (en) * | 2015-10-21 | 2016-05-04 | 芜湖伯拉电子商贸有限公司 | Bush anti loosening structure |
| CN206206371U (en) * | 2016-09-30 | 2017-05-31 | 中国南方航空工业(集团)有限公司 | For the anti-loosing connecting structure of aircraft engine parts assembly connection |
| CN206918008U (en) * | 2017-06-13 | 2018-01-23 | 宁波群力紧固件制造有限公司 | A kind of check bolt |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190201 |
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| RJ01 | Rejection of invention patent application after publication |