CN202756389U - Left-right rotating self-locking device for S-shaped pipe valve sliding key shaft end nut - Google Patents
Left-right rotating self-locking device for S-shaped pipe valve sliding key shaft end nut Download PDFInfo
- Publication number
- CN202756389U CN202756389U CN 201220297365 CN201220297365U CN202756389U CN 202756389 U CN202756389 U CN 202756389U CN 201220297365 CN201220297365 CN 201220297365 CN 201220297365 U CN201220297365 U CN 201220297365U CN 202756389 U CN202756389 U CN 202756389U
- Authority
- CN
- China
- Prior art keywords
- locking device
- shaft end
- sliding key
- key shaft
- nut
- 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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Abstract
The utility model discloses a left-right rotating self-locking device for an S-shaped pipe valve sliding key shaft end nut. The device comprises a sliding key shaft (1), a shaft end (2), and a self-locking device body, wherein an inner thread (4) is arranged at the shaft end (2), the self-locking device is composed of a fastening nut (3) and a locking bolt (5), the fixing nut (3) is tightly screwed at the shaft end (2), and the locking bolt (5) is tightly screwed on the inner thread (4). The device is simple in structure, easy to manufacture and strong in practicality, and can effectively prevent the nut at the sliding key shaft end from being loosened.
Description
Technical field
The utility model relates to a kind of nut self-locking device, in particular, relates to a kind of S pipe valve sliding key shaft end nut left-right rotary self-locking device.
Background technique
At present, in the time of in S pipe valve that sliding key shaft is packed into, the position degree of symmetry of key tooth is wanted high, otherwise can increase friction or cause the spillage accident, and the location of sliding key shaft is subjected to the impact of operator's technical merit, the state of mind etc. thereby the location more complicated of sliding key shaft.After installing, because the S pipe valve can swing fast in when work, the easy like this nut that makes the feather key axle head occurs loosening, and the position degree of symmetry that can cause the key tooth reduces and causes the spillage accident.Up to the present, a kind of nut of feather key axle head that can guarantee not yet occurs and be difficult for loosening S pipe valve sliding key shaft end nut left-right rotary self-locking device.
The model utility content
The purpose of this utility model is easily loosening for the nut of existing sliding key shaft axle head, cause the position degree of symmetry of key tooth to reduce, it is large that friction becomes, easily cause the phenomenon of spillage accident, and a kind of S pipe valve sliding key shaft end nut left-right rotary self-locking device that can effectively prevent the nut loosening of feather key axle head that provides.
S pipe valve sliding key shaft end nut left-right rotary self-locking device of the present utility model, comprise sliding key shaft, axle head and self-locking device, described self-locking device is comprised of set screw nut and lock bolt, and described axle head is provided with internal thread, described set screw nut is tightened on the axle head, and lock bolt is tightened on the internal thread.
Described axle head dextrorotation, internal thread is left-handed, upper left the screwing off of described set screw nut dextrorotation, left-handed upper right the screwing off of lock bolt.
Described axle head is left-handed, internal thread dextrorotation, and left-handed upper right the screwing off of described set screw nut, lock bolt dextrorotation is upper left to be screwed off.
The beneficial effects of the utility model: (1) simple in structure, be easy to make; (2) practical, can effectively prevent the nut loosening of feather key axle head; (3) cost is low.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Among the figure: sliding key shaft 1, axle head 2, set screw nut 3, internal thread 4, lock bolt 5.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
In the drawings, S pipe valve sliding key shaft end nut left-right rotary self-locking device of the present utility model is comprised of sliding key shaft 1, axle head 2, set screw nut 3, internal thread 4 and lock bolt 5.
Described self-locking device is comprised of set screw nut 3 and lock bolt 5, described axle head 2 is provided with internal thread 4, described set screw nut 3 is tightened on the axle head 2, lock bolt 5 is tightened on the internal thread 4, described axle head 2 dextrorotation, internal thread 4 is left-handed, upper left the screwing off of described set screw nut 3 dextrorotation, lock bolt 5 left-handed upper right screwing off.After the having good positioning of sliding key shaft, the nut 3 that is tightened screws lock bolt 5 again and gets final product.Because in set screw nut 3 dextrorotation, when the S pipe valve constantly swings when working, set screw nut 3 will occur loosening to anticlockwise, because the friction of set screw nut 3 and lock bolt 5 can drive lock bolt 5 to anticlockwise, and lock bolt 5 be left-handed on, can produce and oppositely tighten up power, play the effect of tightening up, thereby well prevent the loosening of nut.
Described self-locking device is comprised of set screw nut 3 and lock bolt 5, described axle head 2 is provided with internal thread 4, described set screw nut 3 is tightened on the axle head 2, lock bolt 5 is tightened on the internal thread 4, described axle head 2 is left-handed, internal thread 4 dextrorotation, described set screw nut 3 left-handed upper right screwing off, upper left the screwing off of lock bolt 5 dextrorotation.After the having good positioning of sliding key shaft, the nut 3 that is tightened screws lock bolt 5 again and gets final product.Because on set screw nut 3 is left-handed, when the S pipe valve constantly swings when working, set screw nut 3 will occur loosening to right rotation, because the friction of set screw nut 3 and lock bolt 5 can drive lock bolt 5 to right rotation, and lock bolt 5 is in the dextrorotation, can produce and oppositely tighten up power, play the effect of tightening up, thereby well prevent the loosening of nut.
Claims (3)
1. S pipe valve sliding key shaft end nut left-right rotary self-locking device, comprise sliding key shaft (1), axle head (2) and self-locking device, it is characterized in that, described axle head (2) is provided with internal thread (4), described self-locking device is comprised of set screw nut (3) and lock bolt (5), described set screw nut (3) is tightened on the axle head (2), and lock bolt (5) is tightened on the internal thread (4).
2. S pipe valve sliding key shaft end nut left-right rotary self-locking device according to claim 1 is characterized in that, described axle head (2) dextrorotation, and internal thread (4) is left-handed, upper left the screwing off of described set screw nut (3) dextrorotation, left-handed upper right the screwing off of lock bolt (5).
3. S pipe valve sliding key shaft end nut left-right rotary self-locking device according to claim 1 is characterized in that described axle head (2) is left-handed, internal thread (4) dextrorotation, left-handed upper right the screwing off of described set screw nut (3), upper left the screwing off of lock bolt (5) dextrorotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297365 CN202756389U (en) | 2012-06-25 | 2012-06-25 | Left-right rotating self-locking device for S-shaped pipe valve sliding key shaft end nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297365 CN202756389U (en) | 2012-06-25 | 2012-06-25 | Left-right rotating self-locking device for S-shaped pipe valve sliding key shaft end nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756389U true CN202756389U (en) | 2013-02-27 |
Family
ID=47735574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220297365 Expired - Fee Related CN202756389U (en) | 2012-06-25 | 2012-06-25 | Left-right rotating self-locking device for S-shaped pipe valve sliding key shaft end nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756389U (en) |
-
2012
- 2012-06-25 CN CN 201220297365 patent/CN202756389U/en not_active Expired - Fee Related
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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: 20130227 Termination date: 20150625 |
|
| EXPY | Termination of patent right or utility model |