CN202082251U - Anti-loosening device of bolt - Google Patents
Anti-loosening device of bolt Download PDFInfo
- Publication number
- CN202082251U CN202082251U CN201120194283XU CN201120194283U CN202082251U CN 202082251 U CN202082251 U CN 202082251U CN 201120194283X U CN201120194283X U CN 201120194283XU CN 201120194283 U CN201120194283 U CN 201120194283U CN 202082251 U CN202082251 U CN 202082251U
- Authority
- CN
- China
- Prior art keywords
- bolt
- hole
- nut
- tapered pipe
- pipe threads
- 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
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to bolts, in particular to an anti-loosening device of a bolt. The anti-loosening device of the bolt comprises the bolt and a nut, and is characterized in that one end of the bolt matched with the nut is axially provided with a hole with tapered pipe threads, an elongated slot is axially arranged on the wall of the hole with the tapered pipe threads, a conical plug is fittingly mounted in the hole with the tapered pipe threads, and the axis of the hole with the tapered pipe threads is superposed with the axis of the bolt. Since the hole with the tapered pipe threads is arranged at the end of the bolt and the elongated slot is axially arranged on the wall of the hole with the tapered pipe threads, the hole with the tapered pipe threads is stretched by axial movement of the conical plug, friction force between the nut and threads of the bolt is increased, and loosening of the nut caused by high-frequency vibration of a to-be-connected piece is effectively avoided. The anti-loosening device of the bolt has the advantages of reasonable structure and fine anti-loosening effect and the like and is quite suitable for fastening connection of numerical control machines with high-frequency vibration.
Description
Technical field
The utility model relates to a kind of bolt, particularly a kind of screw retention device.
Background technique
At present, the locking measure of fastening piece mainly contains that frictional force is locking, machinery is locking etc., but these measures mainly are to take the mode of various transformations or increase auxiliary component to carry out locking to nut, and for high speed operation and with the numerical control machine tool of dither, above-mentioned locking measure just can not be satisfied the demand.
Summary of the invention
The purpose of this utility model provides a kind of easy to use, rational in infrastructure, reliable screw retention device of anti-loosing effect.
The utility model is realized by following skill scheme: a kind of screw retention device, comprise bolt, nut, it is characterized in that the hole that axially has the band taper pipe thread at the bolts and nuts match end, on the hole wall of band taper pipe thread, have axial elongated slot, matching in the hole of band taper pipe thread is equipped with the taper plug, the axis in the hole of band taper pipe thread and the dead in line of bolt.
Above-mentioned elongated slot is along uniform more than two on the annulus wall in hole of band taper pipe thread.
Above-mentioned taper plug is the taper plug of hexagonal in the band.
The utility model is owing to have the hole of band taper pipe thread in the bolt end, and on the hole wall of band taper pipe thread, have axial elongated slot, utilize moving axially of taper plug, the hole of band taper pipe thread is strutted, frictional force between the screw thread of nut and bolt is increased, effectively limited because by the generation of the nut loosening phenomenon that dither caused of chaining part.Characteristics such as that model utility has is rational in infrastructure, anti-loosing effect is good are suitable for being fastenedly connected in the numerical control machine tool of dither very much.
Description of drawings
Accompanying drawing 1 is the utility model user mode figure;
Accompanying drawing 2 is the structural representation of the utility model bolt;
Accompanying drawing 3 is the plan view of the utility model accompanying drawing 2.
Embodiment
As shown in Figure 1, 2, 3, in the hole 4 that axially have band taper pipe thread of bolt 1 with nut 2 match ends, have axial elongated slot 5 on the hole wall of band taper pipe thread, matching in the hole of band taper pipe thread is equipped with taper plug 3, the axis in the hole of band taper pipe thread and the dead in line of bolt.
During use, bolt is penetrated in the bolt hole in the connected piece 6, nut 2 screws at the helical thread portion of bolt 1 and afterburning pretension, then will with in the taper plug 3 of hexagonal screw in the hole 4 of taper pipe thread of bolt ends, since the taper plug along bolt axis to moving down, the hole wall of band taper pipe thread is radially strutted, frictional force between the screw thread between bolt, the nut is increased, the head that is to say bolt 1 because of with in the mechanical force of taper plug of hexagonal expand, described nut 2 is played anti-loosing effect by axial limiting.
Above-mentioned bolt, nut and taper plug all can adopt standard piece, and just bolt also need carry out the hole of processing belt taper pipe thread.
Claims (3)
1. screw retention device, comprise bolt, nut, it is characterized in that in the hole (4) that axially have band taper pipe thread of bolt (1) with nut (2) match end, on hole (4) wall of band taper pipe thread, have axial elongated slot (5), matching in the hole of band taper pipe thread is equipped with taper plug (3), the axis in the hole of band taper pipe thread and the dead in line of bolt.
2. screw retention device according to claim 1 is characterized in that above-mentioned elongated slot (5) is along uniform more than two on the annulus wall in hole (4) of band taper pipe thread.
3. screw retention device according to claim 2 is characterized in that the taper plug of above-mentioned taper plug (3) for hexagonal in the band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120194283XU CN202082251U (en) | 2011-06-10 | 2011-06-10 | Anti-loosening device of bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120194283XU CN202082251U (en) | 2011-06-10 | 2011-06-10 | Anti-loosening device of bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202082251U true CN202082251U (en) | 2011-12-21 |
Family
ID=45342881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120194283XU Expired - Fee Related CN202082251U (en) | 2011-06-10 | 2011-06-10 | Anti-loosening device of bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202082251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307232A (en) * | 2019-07-03 | 2019-10-08 | 王仲文 | A kind of screw for preventing from loosening |
-
2011
- 2011-06-10 CN CN201120194283XU patent/CN202082251U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307232A (en) * | 2019-07-03 | 2019-10-08 | 王仲文 | A kind of screw for preventing from loosening |
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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: 20111221 Termination date: 20160610 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |