CN202991803U - Antitheft bolt connection device - Google Patents
Antitheft bolt connection device Download PDFInfo
- Publication number
- CN202991803U CN202991803U CN 201220708855 CN201220708855U CN202991803U CN 202991803 U CN202991803 U CN 202991803U CN 201220708855 CN201220708855 CN 201220708855 CN 201220708855 U CN201220708855 U CN 201220708855U CN 202991803 U CN202991803 U CN 202991803U
- Authority
- CN
- China
- Prior art keywords
- bolt
- groove
- packing ring
- locknut
- locking 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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- Clamps And Clips (AREA)
Abstract
The utility model relates to an antitheft bolt connection device which comprises a bolt, a locknut, a washer and a fastening nut. The front and rear ends of the bolt are opposite in thread direction. The locknut is connected with the front end of the bolt in a threaded manner. The fastening nut is connected with the rear end of the bolt in a threaded manner. The locknut and the fastening nut are spaced at a certain interval. The lower surface of the locknut is provided with a first groove. The upper surface of the fastening nut is provided with a second groove. The washer is sleeved on the bolt and located between the locknut and the fastening nut. The washer is respectively clamped to the first groove and the second groove. In the loosening direction, the washer is respectively clamped to the first groove and the second groove, so that the fastening nut and the locknut are allowed to rotate simultaneously during use of the antitheft bolt connection device. The upper and lower ends of the bolt are opposite in thread direction, so that the locknut and the fastening nut lock each other during simultaneous rotation and then cannot rotate and loosening or removal of the bolt is prevented.
Description
Technical field
The utility model relates to a kind of anti-theft bolt field, especially relates to a kind of anti-theft bolt coupling arrangement.
Background technique
In the crude oil production process, on oil transport pipeline, loss is in use often artificially dismantled and caused to attachment bolt used at present, and perhaps easily appearance is become flexible and caused connection to be lost efficacy.In order to address this problem, some adopt the method that the attachment bolt electricity consumption is welded to prevent that the loosening and robber of attachment bolt from tearing open, and with gas welding, attachment bolt are cut when maintenance again, make it to lose efficacy.But, have certain potential safety hazard owing to getting angry in the crude oil production place, and its examination and approval procedures are also cumbersome, therefore make the use of the method be subject to larger restriction.Therefore, how to develop the threaded connection device that self-locking property is good, theftproof performance is good, become the technical problem that those skilled in the art need to be resolved hurrily.
Summary of the invention
The purpose of this utility model is for the problems referred to above, and a kind of anti-theft bolt coupling arrangement is provided, and has solved the existing technical problem of prior art.
for achieving the above object, the utility model has adopted following technical proposal: a kind of anti-theft bolt coupling arrangement, it comprises bolt, locking nut, packing ring and tightening nut, the leading portion of described bolt is opposite with the thread rotary orientation of rear end, described locking nut is threaded with the front end of described bolt, described tightening nut is threaded with the rear end of described bolt, described locking nut and described tightening nut interval intended distance, the lower surface of described locking nut has the first groove, the upper surface of described tightening nut has the second groove, described gasket sleeve is on described bolt, and between described locking nut and described tightening nut, described packing ring engages with described the first groove and the second groove respectively.
In above-mentioned anti-theft bolt coupling arrangement, preferably, the external diameter of described bolt front end is less than the external diameter of described bolt rear end.
In above-mentioned anti-theft bolt coupling arrangement, preferably, described packing ring is open loop structure, and the first end of described packing ring inserts described the first groove, and the second end of described packing ring inserts described the second groove.
The anti-theft bolt coupling arrangement that the utility model provides in use, on the direction that loosens, because packing ring engages with the first groove and the second groove respectively, therefore tightening nut and locking nut can only rotate simultaneously, and because the thread rotary orientation of the top and bottom of bolt is opposite, produce interlocking when therefore locking nut and tightening nut being rotated at the same time, can not rotate, thereby can prevent that bolt from getting loose or being disassembled.
Description of drawings
Fig. 1 is the structural representation of the anti-theft bolt coupling arrangement that provides of the utility model embodiment.
Embodiment
Please refer to Fig. 1, the anti-theft bolt coupling arrangement that the utility model embodiment provides comprises bolt 11, locking nut 12, packing ring 14 and tightening nut 13.
The leading portion of bolt 11 is opposite with the thread rotary orientation of rear end, and locking nut 12 is threaded with the front end of bolt 11, and tightening nut 13 is threaded with the rear end of bolt 11, and locking nut 12 distance certain with tightening nut 13 intervals.
The lower surface of locking nut 12 has the first groove, and the upper surface of tightening nut 13 has the second groove, and packing ring 14 is enclosed within on bolt 11, and between locking nut 12 and tightening nut 13, packing ring 14 engages with the first groove and the second groove respectively.
When using this anti-theft bolt coupling arrangement, workpiece 15 is enclosed within the lower end of bolt 11, and the lower surface of tightening nut 13 is close to the upper surface of workpiece 15.Screwing on direction, tightening nut 13 and locking nut 12 can rotate separately, but on the direction that loosens, and because packing ring 14 engages with the first groove and the second groove respectively, so tightening nut 13 and locking nut 12 can only rotate simultaneously.And because the thread rotary orientation of the top and bottom of bolt 11 is opposite, when therefore locking nut 12 and tightening nut 13 being rotated at the same time, the generation interlocking, can not rotate, thereby improved the reliability of scyewed joint, prevent that bolt 11 from getting loose, and causes the artificial destruction of equipment or facility.When wanting to make this anti-theft bolt coupling arrangement, can use special-purpose extracting tool that locking nut 12 is cut off and take off, can complete the dismounting of this anti-theft bolt coupling arrangement.
Particularly, in the present embodiment, packing ring 14 is open loop structure, and the first end of packing ring 14 inserts the first groove of locking nut 12, and the second end of packing ring 14 inserts the second groove of tightening nut 13.Preferably, described packing ring 14 is made by steel.
Preferably, the external diameter of bolt 11 front ends is less than the external diameter of bolt 11 rear ends.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used the terms such as tightening nut, locking nut, packing ring, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (3)
1. anti-theft bolt coupling arrangement, it is characterized in that, comprise bolt, locking nut, packing ring and tightening nut, the leading portion of described bolt is opposite with the thread rotary orientation of rear end, described locking nut is threaded with the front end of described bolt, described tightening nut is threaded with the rear end of described bolt, described locking nut and described tightening nut interval intended distance, the lower surface of described locking nut has the first groove, the upper surface of described tightening nut has the second groove, described gasket sleeve is on described bolt, and between described locking nut and described tightening nut, described packing ring engages with described the first groove and the second groove respectively.
2. anti-theft bolt coupling arrangement according to claim 1, is characterized in that, the external diameter of described bolt front end is less than the external diameter of described bolt rear end.
3. anti-theft bolt coupling arrangement according to claim 1, is characterized in that, described packing ring is open loop structure, and the first end of described packing ring inserts described the first groove, and the second end of described packing ring inserts described the second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708855 CN202991803U (en) | 2012-12-20 | 2012-12-20 | Antitheft bolt connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708855 CN202991803U (en) | 2012-12-20 | 2012-12-20 | Antitheft bolt connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991803U true CN202991803U (en) | 2013-06-12 |
Family
ID=48562987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220708855 Expired - Fee Related CN202991803U (en) | 2012-12-20 | 2012-12-20 | Antitheft bolt connection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202991803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317149A (en) * | 2018-03-28 | 2018-07-24 | 陕西蓝智机器人有限公司 | A kind of anti-loosening bolt |
| CN112355984A (en) * | 2020-09-30 | 2021-02-12 | 上海宝冶冶金工程有限公司 | Support for disassembling shaft sleeve of coupling and disassembling method of shaft sleeve of coupling |
-
2012
- 2012-12-20 CN CN 201220708855 patent/CN202991803U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317149A (en) * | 2018-03-28 | 2018-07-24 | 陕西蓝智机器人有限公司 | A kind of anti-loosening bolt |
| CN112355984A (en) * | 2020-09-30 | 2021-02-12 | 上海宝冶冶金工程有限公司 | Support for disassembling shaft sleeve of coupling and disassembling method of shaft sleeve of coupling |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20161220 |