CN1058829A - safety nut - Google Patents
safety nut Download PDFInfo
- Publication number
- CN1058829A CN1058829A CN 90105524 CN90105524A CN1058829A CN 1058829 A CN1058829 A CN 1058829A CN 90105524 CN90105524 CN 90105524 CN 90105524 A CN90105524 A CN 90105524A CN 1058829 A CN1058829 A CN 1058829A
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- eccentric
- taper hole
- centering
- 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
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 208000004141 microcephaly Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Clamps And Clips (AREA)
Abstract
A safety nut has an axial eccentric conic hole with big external part and small internal part, an elastic eccentric conic sleeve with axial notch matched with said eccentric conic hole, and a bolt with a diameter less than external diameter. The nut locking device has the advantages of simple structure, convenience in manufacturing and mounting, capability of permanently preventing the nut from loosening, capability of reducing accidents of connecting and fastening components to the maximum extent, benefit for safe production, wide application range, more required quantity and the like.
Description
The invention belongs to the nut loosening that prevents to be fastened on the bolt and come off, avoid the jam nut that has an accident.
Existing high voltage overhead lines iron tower, Structural Hardware buildings such as television tower, railroad bridge mostly are to make the connection fastening piece with the plain bolt nut, coupling together in layer.This metalloid construction is subjected to the erosion of wind and rain and the vibration of blast in the open air throughout the year, connect the just slowly corrosion and loosening of bolt and nut of fastening piece, if not maintenance in time, time has been grown, the nut screw mandrel just can come off, the serious accident that causes the Structural Hardware building collapsing jeopardizes the safety of nation-building and people's lives and properties.Also have some Structural Hardware facilities to have an accident because of bolt is stolen, as: the electric power line pole tower anchor clamp, owing to use plain nut to make fastening piece, no anti-theft measure and often by some shortage security knowledges or the lawless person steal, cause the accident of falling the rod disconnection.So adopting anti-loose anti-theft safety helmet mother is the important measures that guarantee safe power supply.
The object of the present invention is to provide a kind of nut loosening that practical measures prevent fastening piece or stolen that has, the jam nut of avoiding accident to take place, promptly utilize the mutual extrusion effect of the taper hole in tapered sleeve and the nut, prevent that nut forever can loose or dislocation under various mal-conditions.
Method Of Accomplishment of the present invention is the axial centering taper hole that certain depth is arranged of end processing at nut, and outer imperial palace is little, and microcephaly's circle each several part of centering taper hole is greater than the internal diameter of nut thread, otherwise supporting bolt just can not pass through.With the endoporus zero draft diameter of bore of the elasticity eccentric taper sleeve of centering taper hole adapted bolt external diameter less than adapted, after the identical nut with the nut centering taper hole of the outside dimensions of eccentric taper sleeve is fastened on the bolt, the centering taper hole major part of nut is outside, eccentric taper sleeve microcephaly's endoporus is aimed at bolt head, use special tool in the centering taper hole of eccentric taper sleeve pressed-in nut.Eccentric taper sleeve endoporus and bolt interlock are very tight, can stop nut loosening.
Advantage of the present invention is, and is simple in structure, and fabrication and installation are convenient, can the nonvolatil nut loosening that prevents, and can reduce the accident that connects fastening piece to greatest extent useful safety in production takes place; The connection that is applicable to hardware is fastening, and is widely applicable, and requirement is many.
Overall structure figure when accompanying drawing 1 is installed and used for the present invention, Fig. 2 is the eccentric taper sleeve schematic representation.
Most preferred embodiment of the present invention is and one of the outer end processing of the matching used nut of bolt (1) (4) the axial centering taper hole (3) with the nut decentraction, the outer imperial palace of centering taper hole is little, microcephaly's circle each several part is greater than the internal diameter of nut thread, after nut is fastened on workpiece (5) on the bolt, microcephaly's endoporus (8) of the elasticity eccentric taper sleeve (2) that has axial gap (7) is aimed at the bolt top, use special tool in the centering taper hole of eccentric taper sleeve pressed-in nut outer end then, eccentric taper sleeve equates substantially with the tapering size of centering taper hole.And the endoporus zero draft of eccentric taper sleeve, diameter of bore is less than the bolt external diameter of adapted, combines very tightly with bolt, can stop the nut left rotation and right rotation, can not become flexible.
Several axial tooth bars of uniform processing around the endoporus of the zero draft of eccentric taper sleeve, endoporus and bolt get tighter with regard to interlock, all tapered sleeves that is pressed into centering taper hole, the outward turning of prevention nut, the anti-loose anti-theft effect is more remarkable.
According to above-mentioned installation method, on the outer terminal bolt of fastening plain nut, add in addition an overcoat that has only centering taper hole and with the eccentric taper sleeve of centering taper hole adapted, enter the eccentric taper sleeve in the overcoat centering taper hole, its endoporus is stung tightly on bolt, the mutual extrusion effect of the centering taper hole that lags and eccentric taper sleeve two conical surfaces, tapered sleeve and bolt interlock are tighter, can prevent that equally nut loosening from coming off.
Claims (3)
1, a kind of jam nut, comprise bolt (1), an end that it is characterized in that nut (4) has an axial centering taper hole (3) that outer imperial palace is little, the small end circle each several part of centering taper hole is greater than the internal diameter of nut thread, elasticity eccentric taper sleeve (2) and centering taper hole adapted that axial gap (7) is arranged, the endoporus of elasticity eccentric taper sleeve (8) zero draft, diameter is less than the bolt external diameter of adapted.
2, nut according to claim 1 is characterized in that the endoporus of elastic conical drogue has several axial tooth bars (6) on every side.
3, nut according to claim 1 is characterized in that having only the overcoat of centering taper hole and elasticity eccentric taper sleeve adapted on the bolt of plain nut outer end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105524 CN1058829A (en) | 1990-08-07 | 1990-08-07 | safety nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105524 CN1058829A (en) | 1990-08-07 | 1990-08-07 | safety nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1058829A true CN1058829A (en) | 1992-02-19 |
Family
ID=4879338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90105524 Pending CN1058829A (en) | 1990-08-07 | 1990-08-07 | safety nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1058829A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104339173A (en) * | 2013-08-09 | 2015-02-11 | 维特恩斯坦股份公司 | Fastening system with eccentric |
| CN108223541A (en) * | 2017-12-26 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | A kind of eccentric self-locking plate nut |
-
1990
- 1990-08-07 CN CN 90105524 patent/CN1058829A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104339173A (en) * | 2013-08-09 | 2015-02-11 | 维特恩斯坦股份公司 | Fastening system with eccentric |
| CN104339173B (en) * | 2013-08-09 | 2018-04-10 | 维特恩斯坦欧洲股份公司 | Fastening system with eccentric part |
| CN108223541A (en) * | 2017-12-26 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | A kind of eccentric self-locking plate nut |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |