CN203114845U - Symmetrical prepressing type anti-loosing screw nut assembly - Google Patents
Symmetrical prepressing type anti-loosing screw nut assembly Download PDFInfo
- Publication number
- CN203114845U CN203114845U CN 201220691906 CN201220691906U CN203114845U CN 203114845 U CN203114845 U CN 203114845U CN 201220691906 CN201220691906 CN 201220691906 CN 201220691906 U CN201220691906 U CN 201220691906U CN 203114845 U CN203114845 U CN 203114845U
- Authority
- CN
- China
- Prior art keywords
- nut
- screw nut
- work
- prepressing
- symmetrical
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
The utility model relates to a symmetrical prepressing type anti-loosing screw nut assembly, which consists of a work screw nut (1), a prepressing screw nut (2) and self-alignment screw bolts (3), and is characterized in that firstly, the work screw nut (1) is tightly screwed on a shaft type part (4) with screw threads, and in addition, the required work requirement is enabled to be met; the prepressing screw nut (2) is screwed in, and in addition, a 3mm-8mm gap is enabled to be formed between the prepressing screw nut (2) and the work screw nut (1) in the axial direction; and the work screw nut (1) and the prepressing screw nut (2) are connected together by two self-alignment screw bolts (3), and a certain pretightening force is enabled to be realized between the work screw nut (1) and the prepressing screw nut (2). The mass and the stress of the anti-loosing screw nut assembly in the radial direction are respectively and symmetrically distributed, and the stable and reliable connection can be realized. The symmetrical prepressing type anti-loosing screw nut assembly has the advantages that structure is simple, connection is reliable, use is convenient, and the anti-loosing screw nut assembly can be widely applied to the anti-loosing of various shaft type parts.
Description
Technical field
It is locking that the utility model relates to axial workpiece, particularly a kind of symmetrical prepressing type anti-loosen screw nut component.
Background technique:On the axial workpiece of strenuous vibration and rotation at a high speed, owing to part does not have locking measure or locking improper measures to cause whole parts to get loose to cause various accidents to happen occasionally, therefore, how effectively reliably locking is that Machine Design reliability aspect needs the problem considered emphatically.At present, in the locking measure of axial workpiece, common method is to adopt hatch lock jack panel, screw precompression screw, double nut, closing in nut etc., but these methods are in the axial workpiece existence defective in various degree of rotation at a high speed, for example the hatch lock jack panel is owing to cut an asymmetrical deep trouth at nut, pretension bolt is only in a side, and this can cause violent vibrations because of quality and stressed skewness when rotating at a high speed; The method of employing screw precompression screw can cause the nonvolatil damage of outside thread on the component of rod category; The locking reliability of double nut and closing in nut is not high.Based on above analysis, press for and propose reliable locking measure, be beneficial to improve its functional reliability in the occasion of high speed rotation and high vibration, reduce unnecessary accident and take place.
Summary of the invention:The purpose of this utility model be to the base part of rotation and high vibration at a high speed provide a kind of reliably, anti-loosen screw nut component efficiently, this anti-loosen screw nut component can reduce effectively that part gets loose and the inefficacy that causes.
Formation of the present utility model: a kind of symmetrical prepressing type anti-loosen screw nut component, formed by work nut, precompressed nut and self-alignment bolt, it is characterized in that: work nut and precompressed nut successively are tightened on the screwed axial workpiece, and guarantee that precompressed nut and work nut have the gap of 3mm-8mm in the axial direction; To work nut and precompressed nut of two self-alignment bolts links together and guarantees and have certain pretightening force between them.
Work nut profile is six rib square toes A structures, and interior pore area internal thread A has tapped hole on the end face of work nut.
Precompressed nut profile is six rib square toes B structures, and interior pore area internal thread B, precompressed nut end face have step conical surface transition formula through hole.
Self-alignment bolt neck has Gewindefreistiche, and screw rod and nut joint are the tapering transitional surfaces, and the nut top has interior hexagonal hole.
Compared with prior art, the utlity model has following characteristics: quality diametrically and stressedly all be symmetrically distributed, pretightening force is bigger, can realize reliable and stable locking; Especially when the machine tool chief axis of rotation at a high speed uses, can guarantee reliably that the work nut does not get loose, avoid stressed or the unstable and inefficacy of the uneven operating mode that causes of mass distribution because of anti-loosen screw nut component.
Description of drawings:
Fig. 1 is anti-loosen screw nut component head erection drawing;
Fig. 2 is work nut structure figure;
Fig. 3 is precompressed nut structure figure;
Fig. 4 is self-alignment bolt arrangement figure.
Among the figure 1, the work nut, 2, the precompressed nut, 3, the self-alignment bolt, 4, axial workpiece, 5, six rib square toes A, 6, internal thread A, 7, tapped hole, 8, six rib square toes B, 9, internal thread B, 10, step conical surface transition formula through hole, 11, Gewindefreistiche, 12, tapering transitional surface, 13, interior hexagonal hole.
Embodiment:
Shown in Fig. 1-4, a kind of symmetrical prepressing type anti-loosen screw nut component, formed by work nut 1, precompressed nut 2 and self-alignment bolt 3, it is characterized in that: work nut 1 and precompressed nut 2 successively are tightened on the screwed axial workpiece 4, and guarantee that precompressed nut 2 and work nut 1 have the gap of 3mm-8mm in the axial direction; To work nut 1 and precompressed nut 2 of two self-alignment bolts 3 links together and guarantees and have certain pretightening force between them.
Self-alignment bolt 3 necks have Gewindefreistiche 11, and screw rod and nut joint are tapering transitional surfaces 12, and the nut top has interior hexagonal hole 13.
Claims (4)
1. symmetrical prepressing type anti-loosen screw nut component, it is characterized in that: formed by work nut (1), precompressed nut (2) and self-alignment bolt (3), work nut (1) and precompressed nut (2) successively are tightened on the screwed axial workpiece (4), and guarantee that precompressed nut (2) and work nut (1) have the gap of 3mm-8mm in the axial direction; To work nut (1) and precompressed nut (2) of two self-alignment bolts (3) links together and guarantees and have certain pretightening force between them.
2. a kind of symmetrical prepressing type anti-loosen screw nut component according to claim 1 is characterized in that: work nut (1) profile is six rib square toes A(5) structure, interior pore area internal thread A(6), have tapped hole (7) on the end face of work nut (1).
3. a kind of symmetrical prepressing type anti-loosen screw nut component according to claim 1, it is characterized in that: precompressed nut (2) profile is six rib square toes B(8) structure, interior pore area internal thread B(9), the precompressed nut end face has step conical surface transition formula through hole (10).
4. a kind of symmetrical prepressing type anti-loosen screw nut component according to claim 1, it is characterized in that: self-alignment bolt (3) neck has Gewindefreistiche (11), screw rod and nut joint are tapering transitional surface (12), and the nut top has interior hexagonal hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691906 CN203114845U (en) | 2012-12-14 | 2012-12-14 | Symmetrical prepressing type anti-loosing screw nut assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691906 CN203114845U (en) | 2012-12-14 | 2012-12-14 | Symmetrical prepressing type anti-loosing screw nut assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114845U true CN203114845U (en) | 2013-08-07 |
Family
ID=48895195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220691906 Expired - Fee Related CN203114845U (en) | 2012-12-14 | 2012-12-14 | Symmetrical prepressing type anti-loosing screw nut assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114845U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644208A (en) * | 2013-11-18 | 2014-03-19 | 苏州蓝王机床工具科技有限公司 | Mechanism for connecting gear and drive shaft |
| CN104533924A (en) * | 2015-01-15 | 2015-04-22 | 中国核动力研究设计院 | Fastening structure suitable for movable floating nuclear power plant platforms |
-
2012
- 2012-12-14 CN CN 201220691906 patent/CN203114845U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644208A (en) * | 2013-11-18 | 2014-03-19 | 苏州蓝王机床工具科技有限公司 | Mechanism for connecting gear and drive shaft |
| CN104533924A (en) * | 2015-01-15 | 2015-04-22 | 中国核动力研究设计院 | Fastening structure suitable for movable floating nuclear power plant platforms |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10907677B2 (en) | Asymmetric fastener recess and key | |
| CN203114845U (en) | Symmetrical prepressing type anti-loosing screw nut assembly | |
| CN106351936A (en) | Axially compressed looseproof fastening device | |
| CN111577744A (en) | Never-loosening self-tightening bolt and nut sleeve system | |
| CN204477001U (en) | External thread fastener with pre-grooved tail end capable of realizing riveting assembly | |
| US7341414B2 (en) | Fastener and method for reducing stress failure in an engine component | |
| CN202914197U (en) | Combined steel-top aluminum-skirt piston | |
| CN202732635U (en) | Bolt capable of being prevented from loosening after being locked | |
| CN205996866U (en) | A kind of interior Hexagonal jacket joint of tiltable angle | |
| CN201810634U (en) | Fastening threaded device | |
| CN214364129U (en) | Slotless high-strength bolt connecting joint for space grid structure | |
| CN216519124U (en) | Self-changing type lock nut | |
| CN201963710U (en) | Connecting rod with toothed Huff surface | |
| CN211820309U (en) | Anti-loosening bolt | |
| CN104595329A (en) | External thread fastener with pre-grooved tail end and capable of realizing riveting assembly and using method thereof | |
| CN212838902U (en) | Self-tightening bolt and nut sleeve system | |
| CN209557462U (en) | A kind of backstop lock nut, vehicle, generating equipment and track | |
| CN204284167U (en) | Prevent loose type bolt | |
| CN211924722U (en) | Rubber joint of locking installation | |
| CN210218365U (en) | Fast-assembling nut | |
| CN108071652A (en) | Nut fastener | |
| CN213598358U (en) | High-strength hexagon bolt | |
| CN210830089U (en) | Anti-loosening and dustproof nut | |
| CN202117789U (en) | Piston structure of steel head iron skirt | |
| CN213711543U (en) | Rivet made of left-tooth screw through back locking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20151214 |
|
| EXPY | Termination of patent right or utility model |