CN201202723Y - Anti-theft fastening device - Google Patents
Anti-theft fastening device Download PDFInfo
- Publication number
- CN201202723Y CN201202723Y CNU2008201201417U CN200820120141U CN201202723Y CN 201202723 Y CN201202723 Y CN 201202723Y CN U2008201201417 U CNU2008201201417 U CN U2008201201417U CN 200820120141 U CN200820120141 U CN 200820120141U CN 201202723 Y CN201202723 Y CN 201202723Y
- Authority
- CN
- China
- Prior art keywords
- nut
- protecting cover
- securing means
- theft
- screw rod
- 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
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 8
- 230000002265 prevention Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 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
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Landscapes
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
Disclosed is an anti-theft fastening device which comprises a threaded rod with a semicircular head, and a nut matching with the threaded rod. The nut is arranged inside a protecting sleeve and is fixedly matched with the threaded rod. The inner wall of the protective sleeve is tapered and a tapered protective block is disposed into the protective sleeve from the mouth and is fixed therein; and a non-standard screw hole matching with the head of a dismantling tool is arranged in the protective block. The tapered protective block is arranged in the protective sleeve and the protective block can prevent the nut from being screwed out, so the anti-theft fastening device has the function of guarding against theft. Since the protective block is provided with the non-standard screw hole which matches with the head of the dismantling tool, and the aperture or the screw thread of the non-standard screw hole are non-standard, so the anti-theft fastening device can only be dismantled by a special dismantling tool, which is good for maintenance and theft prevention of a transformer.
Description
Technical field:
The utility model relates to a kind of antitheft securing means.
Background technique:
At present, various antitheft securing means structures are numerous.As Chinese patent a kind of " thread type transformer anti-theft bolt " just proposed for No. 92222957.0.This technological scheme thread type transformer anti-theft bolt is made up of screw rod, anti-theft nut, coupling nut, anti-theft nut and screw rod have adopted the material of unlike material, the fixed end of screw rod is that the screw thread shear strength of spherical cap shape anti-theft nut is greater than the screw flight shear strength, when moment of torsion is excessive, whole screw threads on the screw rod that the screw thread top is local with anti-theft nut contacts on the anti-theft nut will destroy, recessed ditch appears on the screw rod, anti-theft nut can only can not be dismantled in the original position rotation, can only be sawed-off during dismounting, it has certain anti-theft effect.But this anti-theft bolt can only be sawed-off during dismounting after the robber tears open, makes the power department people personnel that work all can't dismantle, and brought inconvenience for the maintenance of transformer.
Summary of the invention:
The purpose of this utility model is: a kind of theftproof performance ideal is provided, uses the dismountable antitheft securing means of special tool.
The utility model is achieved through the following technical solutions:
A kind of antitheft securing means, comprise: the screw rod of band cup head end, the nut that matches with screw rod, it is characterized in that: described nut is located in the protecting cover and is cooperated fixing with screw rod, the protecting cover inwall has tapering, the band tapering protects piece and inserts and be fixed in the protecting cover from the protecting cover oral area, protects and is provided with the nonstandard screw that matches with the extracting tool head in the piece.
Advantage of the present utility model is: protect piece owing to be provided with the band tapering in the protecting cover, protect piece and can stop nut to be screwed out, make to the utlity model has anti-theft feature.Because protect being provided with the nonstandard screw that matches with the extracting tool head in the piece, the aperture of nonstandard screw or screw thread adopt nonstandard specification, the utility model can only adopt removal tool special to dismantle.Make theftproof performance ideal of the present utility model, use special tool detachable, be beneficial to the antitheft of transformer and safeguard.
In the utility model, described nut is an abnormity nut.Make and the utlity model has the double anti-theft function.
In the utility model, described antitheft securing means is provided with spring washer.It can further improve the antitheft performance of tearing open.
In the utility model, described screw rod tail periphery is provided with teeth groove.When mounted, impact bolt, the teeth groove deformable closely contacts with the fixed hole of transformer bracket.
In the utility model, described abnormity nut is a pentagon nut.Certainly, the utility model also can adopt the abnormity nut of other shape.
In the utility model, described protecting cover outer side surface is provided with breach.This breach is beneficial to spanner and clamps protecting cover, and when preventing to dismantle, protecting cover rotates, and makes that to protect the piece dismounting more convenient.
Description of drawings:
Fig. 1 is the utility model embodiment 1 parts decomposition texture schematic representation (because the dismantling device of abnormity nut is a prior art, no longer illustrating among the figure).
Generalized section when Fig. 2 is the utility model embodiment 1 locking.
Embodiment:
In conjunction with Fig. 1, shown in Figure 2: the antitheft securing means of present embodiment comprises: the screw rod 1 of band cup head end, the nut 2 that matches with screw rod.Nut is an abnormity nut, abnormity nut is located in the protecting cover 3 and is cooperated fixing with screw rod 1, protecting cover 3 inwalls have tapering, and the band tapering protects piece 4 and inserts and be fixed in the protecting cover 3 from the protecting cover oral area, protects and is provided with the nonstandard screw 5 that matches with the extracting tool head in the piece.Extracting tool 6 heads can stretch into and protect in the piece screw, and the extracting tool head is provided with and protects the screw thread 7 that the piece screw matches.Antitheft securing means is provided with spring washer 8.The screw rod tail periphery is provided with teeth groove 9.The abnormity nut 2 of present embodiment is a pentagon nut.The protecting cover outer side surface is provided with breach 12.This breach is beneficial to spanner and clamps protecting cover, and when preventing to dismantle, protecting cover rotates, and makes that to protect the piece dismounting more convenient.
The disassembly process of present embodiment is as follows: during installation, bolt is inserted in the fixed hole 11 of transformer bracket 10, the other end puts protecting cover, after screwing abnormity nut, after will protecting piece and inserting in the protecting cover, knock and protect piece, protect piece and protecting cover is combined closely, just finish installation.During dismounting, the extracting tool head stretched into protect in the piece screw, the turn extracting tool, the extracting tool head enters and protects the piece screw, continues the turn extracting tool, makes the extracting tool head squeeze the top mutually with screw rod, just can from protecting cover, take out protecting piece, re-use the socket wrench that matches with abnormity nut, just abnormity nut can be screwed out, finish dismounting.
The band tapering protects piece and nut is an abnormity nut owing to be provided with in the protecting cover, makes to the utlity model has the double anti-theft function.All to adopt nonstandard screw and nut be abnormity nut owing to protect the aperture of piece screw and screw thread, and the utility model can only adopt two cover removal tool specials to dismantle.Thereby make theftproof performance ideal of the present utility model, use special tool to pull down.
Claims (6)
1, a kind of antitheft securing means, comprise: the screw rod of band cup head end, the nut that matches with screw rod, it is characterized in that: described nut is located in the protecting cover and is cooperated fixing with screw rod, the protecting cover inwall has tapering, the band tapering protects piece and inserts and be fixed in the protecting cover from the protecting cover oral area, protects and is provided with the nonstandard screw that matches with the extracting tool head in the piece.
2, antitheft securing means according to claim 1; It is characterized in that: described nut is an abnormity nut.
3, antitheft securing means according to claim 1; It is characterized in that: described antitheft securing means is provided with spring washer.
4, antitheft securing means according to claim 1; It is characterized in that: described screw rod tail periphery is provided with teeth groove.
5, antitheft securing means according to claim 2; It is characterized in that: described abnormity nut is a pentagon nut.
6, antitheft securing means according to claim 1; It is characterized in that: described protecting cover outer side surface is provided with breach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201201417U CN201202723Y (en) | 2008-06-20 | 2008-06-20 | Anti-theft fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201201417U CN201202723Y (en) | 2008-06-20 | 2008-06-20 | Anti-theft fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201202723Y true CN201202723Y (en) | 2009-03-04 |
Family
ID=40425037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201201417U Expired - Fee Related CN201202723Y (en) | 2008-06-20 | 2008-06-20 | Anti-theft fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201202723Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954956A (en) * | 2010-05-17 | 2011-01-26 | 南通中远川崎船舶工程有限公司 | Escape type anti-piracy device for weather tight door on ship |
| CN103671453A (en) * | 2012-09-18 | 2014-03-26 | 北汽福田汽车股份有限公司 | Disassembly protection mechanism for bolt connection |
-
2008
- 2008-06-20 CN CNU2008201201417U patent/CN201202723Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954956A (en) * | 2010-05-17 | 2011-01-26 | 南通中远川崎船舶工程有限公司 | Escape type anti-piracy device for weather tight door on ship |
| CN103671453A (en) * | 2012-09-18 | 2014-03-26 | 北汽福田汽车股份有限公司 | Disassembly protection mechanism for bolt connection |
| CN103671453B (en) * | 2012-09-18 | 2015-10-28 | 北汽福田汽车股份有限公司 | Bolt connects anti-detachment mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114165510B (en) | Antitheft self-locking integrated combined bolt fastener | |
| CN201202723Y (en) | Anti-theft fastening device | |
| CN201763780U (en) | Conicity antitheft screw bolt and special sleeve barrel matched with same | |
| ITTO20130509A1 (en) | ANTI-THEFT LOCKING DEVICE FOR VEHICLE WHEELS | |
| CN201027777Y (en) | Anti-theft lock mechanism of railway signal electric cable box | |
| CN201874962U (en) | Antitheft nut and special hollow socket thereof | |
| CN218953790U (en) | Antitheft nut with adhesive for blocking | |
| CN102108999A (en) | License plate bolt | |
| CN201723562U (en) | Conical anti-theft bolt and special socket matched therewith | |
| CN201763781U (en) | Conical antitheft bolt and special sleeve matched with the same | |
| CN219062211U (en) | Antitheft nut for iron tower | |
| CN201231466Y (en) | Hollow socket wrench special for mounting or dismounting inner heptangular anti-theft screw nut | |
| CN201884432U (en) | Conicity theftproof bolt and matched special sleeve thereof | |
| CN201730943U (en) | Anti-theft nut and special hollow sleeve barrel thereof | |
| CN201730938U (en) | Antitheft screw nut and special hollow sleeve barrel thereof | |
| CN201696437U (en) | Conicity burglarproof screw bolt and special sleeve matched therewith | |
| CN214118670U (en) | Power bolt convenient to cut | |
| CN212250768U (en) | Anti-theft screw capable of preventing screw from being randomly detached by others | |
| CN201090588Y (en) | Anti-theft bolt and disassembly work head thereof | |
| CN201884433U (en) | Conical antitheft bolt and special sleeve matched with same | |
| CN211231224U (en) | Anti-theft bolt | |
| CN201730942U (en) | Anti-theft screw nut and dedicated hollow sleeve therefor | |
| CN210484322U (en) | Fastening shaft pin convenient to disassemble and assemble and preventing loosening | |
| CN201253817Y (en) | Special-purpose box spanner | |
| CN201687841U (en) | Conical theftproof bolt and matched special sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20110620 |