CN115111250A - Double-nut anti-loose threaded connection method - Google Patents
Double-nut anti-loose threaded connection method Download PDFInfo
- Publication number
- CN115111250A CN115111250A CN202210561975.6A CN202210561975A CN115111250A CN 115111250 A CN115111250 A CN 115111250A CN 202210561975 A CN202210561975 A CN 202210561975A CN 115111250 A CN115111250 A CN 115111250A
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- Prior art keywords
- nut
- concave
- internal thread
- convex
- bolt
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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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000011295 pitch Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Images
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
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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
- F16B39/22—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
- F16B39/30—Locking exclusively by special shape of the screw-thread
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention relates to a double-nut anti-loose thread connection method, which comprises a convex nut, a concave nut and a bolt, wherein the convex nut is screwed on the bolt and then is screwed, and the convex nut and the concave nut are coupled and fastened together. The beneficial effects are as follows: the device adopts a mode of fastening connection of concave-convex double nuts, can solve the problem that the existing double nuts are easy to loosen during connection, improves the effect of threaded connection, and has the advantages of simple structure, convenient and practical installation and reusable fasteners.
Description
Technical Field
The invention relates to the technical field of fastener connection, in particular to a double-nut anti-loose thread connection method.
Background
The bolt and the nut are common connecting fasteners and are widely applied to the chemical metallurgical machinery industry. In the use process, the threaded connection is loosened due to equipment vibration and other reasons, so that the machine breaks down or medium leaks, and even major production safety accidents are caused, so that the anti-loosening measure is very important. At present, the existing anti-loosening measures mainly comprise friction anti-loosening, mechanical anti-loosening, thread pair anti-loosening damage and the like, and have advantages and disadvantages, some of the measures are too complex, some fasteners can only be used once and can not be used repeatedly, and some of the measures have unsatisfactory anti-loosening effect. The double-nut fastening is the simplest and practical anti-loosening mounting method which is often adopted in the mounting process of chemical metallurgical mechanical equipment, but the loosening condition often exists, and the using effect is not ideal.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the double-nut anti-loosening threaded connection method, the concave-convex double-nut fastening connection mode is adopted, the problem that the existing double nuts are easy to loosen during connection can be solved, the threaded connection effect is improved, the structure is simple, the installation is convenient and practical, and the fastener can be repeatedly utilized.
In order to achieve the purpose, the invention adopts the following technical scheme:
a double-nut anti-loosening threaded connection method is characterized in that a convex nut and a concave nut are fastened firstly with a bolt, and then the convex nut is screwed, the convex nut and the concave nut are coupled and fastened together, and the effect of preventing the concave nut from loosening is achieved, namely the problem that threaded connection is easy to loosen is solved.
A double-nut anti-loose thread connection method relates to a device comprising a convex nut, a concave nut and a bolt, and is characterized in that the outer circle of the concave nut is hexagonal, the inner circle is two sections of stepped internal threads, wherein the internal thread with small diameter is matched with the bolt, and the internal thread with large diameter is a cylindrical internal thread; the inner circle of the convex nut is an internal thread matched with the bolt, one end of the outer circle is hexagonal, and the other end of the outer circle is a conical external thread with the same number of heads and thread pitches as the cylindrical internal thread of the concave nut; the concave nut is screwed on the bolt through the small-diameter internal thread and fastened, and the convex nut is screwed on the bolt through the internal thread and screwed on the cylindrical internal thread of the concave nut through the conical external thread and fastened.
The length of the conical external thread of the convex nut is 0.5-1.5mm greater than that of the cylindrical internal thread of the concave nut.
The bolt is a standard bolt.
Compared with the prior art, the invention has the beneficial effects that:
1) the concave-convex double-nut fastening connection mode is adopted, so that the problem that the existing double-nut connection is easy to loosen is solved, and the threaded connection effect is improved;
2) simple structure, simple to operate, practicality, but and fastener reuse.
Drawings
FIG. 1 is a schematic front view of the structural principle of the present invention;
FIG. 2 is a schematic left side view of the structural principles of the present invention;
FIG. 3 is a schematic front view of the male nut of the present invention;
FIG. 4 is a schematic left side view of the male nut of the present invention;
FIG. 5 is a schematic front view of the structure of the female nut of the present invention;
fig. 6 is a schematic left side view of the structural principle of the female nut of the present invention.
In the figure: 1-convex nut 11-conical external thread 2-concave nut 21-cylindrical internal thread 3-bolt
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1-6, the double-nut anti-loose threaded connection method of the invention adopts a connection mode of coupling the convex nut 1 and the concave nut 2 to prevent the threaded connection from loosening, firstly, the concave nut 2 is fastened and connected with the bolt 3, then the convex nut 1 is screwed, and the convex nut 1 and the concave nut 2 are coupled and fastened together to play a role in preventing the concave nut 2 from loosening, namely, the problem that the threaded connection is easy to loosen is solved.
A double-nut anti-loose thread connection method relates to a device comprising a convex nut 1, a concave nut 2 and a bolt 3, wherein the outer circle of the concave nut 2 is hexagonal (convenient to install), the inner circle is a stepped two-section internal thread, the internal thread with small diameter is designed to be matched with the bolt 3, and the internal thread with large diameter is a cylindrical internal thread 21; the inner circle of the convex nut 1 is an internal thread matched with the bolt 3, one end of the outer circle is hexagonal (convenient to install), and the other end of the outer circle is a conical external thread 11 with the same number and pitch as the number of the cylindrical internal threads 21 of the concave nut 2; the concave nut 2 is screwed on the bolt 3 through the small-diameter internal thread to play a role in connection and fastening, and the convex nut 1 is screwed on the bolt 3 through the internal thread and is screwed on the cylindrical internal thread 21 of the concave nut 2 through the conical external thread 11 to be fastened, so that the concave nut 2 is prevented from loosening.
The length of the conical external thread 11 of the convex nut 1 is 0.5-1.5mm larger than that of the cylindrical internal thread of the concave nut 2, so that the convex nut 1 and the concave nut 2 are ensured to be connected and fastened, and the looseness of the convex nut 1 and the concave nut 2 is prevented.
The bolt 3 is a standard bolt.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. A double-nut anti-loosening threaded connection method is characterized in that a convex nut and a concave nut are fastened firstly with a bolt, and then the convex nut is screwed, the convex nut and the concave nut are coupled and fastened together, and the effect of preventing the concave nut from loosening is achieved, namely the problem that threaded connection is easy to loosen is solved.
2. The double-nut anti-loose thread connection method is realized according to claim 1, and the related devices comprise a convex nut, a concave nut and a bolt, and the double-nut anti-loose thread connection method is characterized in that the outer circle of the concave nut is hexagonal, the inner circle of the concave nut is a stepped two-section internal thread, wherein the internal thread with the small diameter is matched with the bolt, and the internal thread with the large diameter is a cylindrical internal thread; the inner circle of the convex nut is an internal thread matched with the bolt, one end of the outer circle is hexagonal, and the other end of the outer circle is a conical external thread with the same number of heads and thread pitches as the cylindrical internal thread of the concave nut; the concave nut is screwed on the bolt through the small-diameter internal thread and fastened, and the convex nut is screwed on the bolt through the internal thread and screwed on the cylindrical internal thread of the concave nut through the conical external thread and fastened.
3. A double nut lock thread connecting method as claimed in claim 1 or 2, wherein the length of the conical external thread of said male nut is 0.5-1.5mm greater than the length of the cylindrical internal thread of said female nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210561975.6A CN115111250A (en) | 2022-05-23 | 2022-05-23 | Double-nut anti-loose threaded connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210561975.6A CN115111250A (en) | 2022-05-23 | 2022-05-23 | Double-nut anti-loose threaded connection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115111250A true CN115111250A (en) | 2022-09-27 |
Family
ID=83325510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210561975.6A Pending CN115111250A (en) | 2022-05-23 | 2022-05-23 | Double-nut anti-loose threaded connection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115111250A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007040347A (en) * | 2005-08-01 | 2007-02-15 | Nobuhiko Futagawa | Self-locking nut |
| WO2008152963A1 (en) * | 2007-06-12 | 2008-12-18 | Nobuhiko Futagawa | Loosening preventive nut |
| CN208595127U (en) * | 2018-08-07 | 2019-03-12 | 中运航标制造（四川）有限公司 | A kind of nut connecting component with high locking self-locking property |
| CN109737130A (en) * | 2019-02-27 | 2019-05-10 | 祝澎涛 | The asynchronous Anti-loosening nut of mariages |
| CN209705049U (en) * | 2018-12-31 | 2019-11-29 | 天津市盛立达机械设备有限公司 | Conical surface clamping screw |
| CN210686621U (en) * | 2019-09-04 | 2020-06-05 | 袁明 | Outer hoop concentric pressure-equalizing type locknut |
| CN213478900U (en) * | 2020-11-11 | 2021-06-18 | 山东久丰动力科技有限公司 | Anti-loose nut |
| CN213575094U (en) * | 2020-08-10 | 2021-06-29 | 宝钢钢构有限公司 | Double-nut self-locking check bolt |
| CN113684971A (en) * | 2020-05-18 | 2021-11-23 | 何文娟 | Assembly type structural steel bar straight thread connecting device and connecting method thereof |
| CN215762735U (en) * | 2021-04-16 | 2022-02-08 | 江苏莱尔曼电气科技有限公司 | Anti-loosening bolt |
-
2022
- 2022-05-23 CN CN202210561975.6A patent/CN115111250A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007040347A (en) * | 2005-08-01 | 2007-02-15 | Nobuhiko Futagawa | Self-locking nut |
| WO2008152963A1 (en) * | 2007-06-12 | 2008-12-18 | Nobuhiko Futagawa | Loosening preventive nut |
| CN208595127U (en) * | 2018-08-07 | 2019-03-12 | 中运航标制造（四川）有限公司 | A kind of nut connecting component with high locking self-locking property |
| CN209705049U (en) * | 2018-12-31 | 2019-11-29 | 天津市盛立达机械设备有限公司 | Conical surface clamping screw |
| CN109737130A (en) * | 2019-02-27 | 2019-05-10 | 祝澎涛 | The asynchronous Anti-loosening nut of mariages |
| CN210686621U (en) * | 2019-09-04 | 2020-06-05 | 袁明 | Outer hoop concentric pressure-equalizing type locknut |
| CN113684971A (en) * | 2020-05-18 | 2021-11-23 | 何文娟 | Assembly type structural steel bar straight thread connecting device and connecting method thereof |
| CN213575094U (en) * | 2020-08-10 | 2021-06-29 | 宝钢钢构有限公司 | Double-nut self-locking check bolt |
| CN213478900U (en) * | 2020-11-11 | 2021-06-18 | 山东久丰动力科技有限公司 | Anti-loose nut |
| CN215762735U (en) * | 2021-04-16 | 2022-02-08 | 江苏莱尔曼电气科技有限公司 | Anti-loosening bolt |
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