CN204828242U - Crank of pumping unit sells multistage nut locking device - Google Patents
Crank of pumping unit sells multistage nut locking device Download PDFInfo
- Publication number
- CN204828242U CN204828242U CN201520373115.5U CN201520373115U CN204828242U CN 204828242 U CN204828242 U CN 204828242U CN 201520373115 U CN201520373115 U CN 201520373115U CN 204828242 U CN204828242 U CN 204828242U
- Authority
- CN
- China
- Prior art keywords
- nut
- thread section
- crank pin
- upper cap
- section
- 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 crank of pumping unit sells multistage nut locking device, the device is including crank of pumping unit round pin, screw thread section boss, top nut, lower nut, the crank of pumping unit round pin is provided with the screw thread section for preceding half section, screw thread section front end is provided with screw thread section boss, the screw thread opposite direction of screw thread section and screw thread section boss, install the lower nut in the screw thread section, install the top nut on the screw thread section boss, top nut and lower nut are installed in locking cover, be provided with the spring pad between lower nut and the crank of pumping unit round pin. The utility model has the advantages that: adopt the each other method of locking of multistage nut, the sufficient frictional force of production between multistage nut and crank of pumping unit round pin screw thread has self -locking function between the nut, realizes reliable lockingly, in addition, the not hard up phenomenon that comes from not equidirectional vibrations and bring can be subdued to multistage nut.
Description
Technical field
The utility model relates to a kind of locking device, in particular, relates to a kind of Crank Pin on Pumping Units multiple nuts locking device.
Background technique
In oil field machinery oil, usually adopt beam pumping unit.The crank of beam pumping unit is connected with completing by crank pin between connecting rod.Crank pin is the vitals of oil pump running transmitted load.Because pumping unit work loads is unstable, make crank pin hold-doun nut produce back-off and loosen; Often need adjust the running parameter of beam pumping unit or change the crank pin of damage, also unit crank-pin nut can be caused to loosen because of personal factor; Loosen because the deficiency of unit crank-pin nut self-locking structure also can produce unit crank-pin nut in addition.The nut of fixed crank pin produces and loosens, and as found not in time, can not be fastened and fixed nut in time, crank pin can be deviate from, and causes and stops well production accident, affects crude oil and normally produces, and even can cause and turn over machine accident.
Model utility content
The utility model for the deficiency of existing product, and provides a kind of structure a kind of Crank Pin on Pumping Units multiple nuts locking device that is simple, practical, safe and reliable, that effectively prevent fixed crank pin from loosening.
A kind of Crank Pin on Pumping Units multiple nuts locking device of the present utility model, described device comprises Crank Pin on Pumping Units, thread section boss, upper cap nut, lower nut, described Crank Pin on Pumping Units first half section is provided with thread section, described thread section front end is provided with thread section boss, the hand of spiral of described thread section and thread section boss is contrary, described thread section is provided with lower nut, described thread section boss is provided with upper cap nut, described upper cap nut and lower nut are arranged in loose-proof sleeve, are provided with spring pad between described lower nut and Crank Pin on Pumping Units.Described upper cap nut is left-handed nut, and described lower nut is right-handed nut.Described upper cap nut is right-handed nut, and described lower nut is left-handed nut.Described upper cap nut and lower nut intermediate section are outer-hexagonal nut, and the two ends up and down of described outer-hexagonal nut are provided with checknut section.The external diameter size of the checknut section of described upper cap nut, lower nut is identical, and the length being not less than the maximum diagonal of outer-hexagonal nut of checknut section external diameter.The thickness of described loose-proof sleeve is not less than the summation of upper cap nut and lower nut thickness.The sense of rotation of described loose-proof sleeve is identical with the sense of rotation of upper cap nut.Described upper cap nut and lower nut intermediate section are checknut section, and the two ends up and down of described checknut section are provided with outer-hexagonal nut.
The beneficial effects of the utility model are: structure is simple, and be easy to manufacture, cost is low; The method adopting multiple nuts mutually to lock, produces enough frictional force, has auto-lock function between nut, realize locking reliably between multiple nuts and Crank Pin on Pumping Units screw thread; In addition, multiple nuts can be cut down and shakes from different direction the loosening phenomenon brought.Realize the object of Crank Pin on Pumping Units nut anti-looseness, and it is simple to have structure, relaxation effect is more reliable.Prevent fixed crank pin and loosen phenomenon, practical, safe and reliable; Remove conveniently with changing, user cost is low.
Accompanying drawing explanation
Fig. 1 is scheme of installation of the present utility model;
Fig. 2 is the partial enlarged drawing of lower nut 5 of the present utility model;
Fig. 3 is the partial enlarged drawing of upper cap nut 4 of the present utility model;
Fig. 4 is the partial enlarged drawing of another embodiment of upper cap nut 4 of the present utility model;
In figure: Crank Pin on Pumping Units 1, thread section boss 2, spring pad 3, upper cap nut 4, lower nut 5, loose-proof sleeve 6, checknut section 7, thread section 8.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
In the drawings, a kind of Crank Pin on Pumping Units multiple nuts locking device of the present utility model forms primarily of Crank Pin on Pumping Units 1, thread section boss 2, spring pad 3, upper cap nut 4, lower nut 5, loose-proof sleeve 6, checknut section 7, thread section 8.
Embodiment one
A kind of Crank Pin on Pumping Units multiple nuts locking device, described device comprises Crank Pin on Pumping Units 1, thread section boss 2, upper cap nut 4, lower nut 5, described Crank Pin on Pumping Units 1 first half section is provided with thread section 8, described thread section 8 front end is provided with thread section boss 2, the hand of spiral of described thread section 8 and thread section boss 2 is contrary, described thread section 8 is provided with lower nut 5, described thread section boss 2 is provided with upper cap nut 4, described upper cap nut 4 and lower nut 5 are arranged in loose-proof sleeve 6, are provided with spring pad 3 between described lower nut 5 and Crank Pin on Pumping Units 1.
Described upper cap nut 4 is left-handed nut, and described lower nut 5 is right-handed nut.
Described upper cap nut 4 and lower nut 5 intermediate section are outer-hexagonal nut, and the two ends up and down of described outer-hexagonal nut are provided with checknut section 7.The external diameter size of the checknut section 7 of described upper cap nut 4, lower nut 5 is identical, and the length being not less than the maximum diagonal of outer-hexagonal nut of checknut section 7 external diameter.The thickness of described loose-proof sleeve 6 is not less than the summation of upper cap nut 4 and lower nut 5 thickness.The sense of rotation of described loose-proof sleeve 6 is identical with the sense of rotation of upper cap nut 4.
Embodiment two
A kind of Crank Pin on Pumping Units multiple nuts locking device, described device comprises Crank Pin on Pumping Units 1, thread section boss 2, upper cap nut 4, lower nut 5, described Crank Pin on Pumping Units 1 first half section is provided with thread section 8, described thread section 8 front end is provided with thread section boss 2, the hand of spiral of described thread section 8 and thread section boss 2 is contrary, described thread section 8 is provided with lower nut 5, described thread section boss 2 is provided with upper cap nut 4, described upper cap nut 4 and lower nut 5 are arranged in loose-proof sleeve 6, are provided with spring pad 3 between described lower nut 5 and Crank Pin on Pumping Units 1.
Described upper cap nut 4 is right-handed nut, and described lower nut 5 is left-handed nut.
Described upper cap nut 4 and lower nut 5 intermediate section are checknut section 7, and the two ends up and down of described checknut section 7 are provided with outer-hexagonal nut.
The external diameter size of the checknut section 7 of described upper cap nut 4, lower nut 5 is identical, and the length being not less than the maximum diagonal of outer-hexagonal nut of checknut section 7 external diameter.The thickness of described loose-proof sleeve 6 is not less than the summation of upper cap nut 4 and lower nut 5 thickness.The sense of rotation of described loose-proof sleeve 6 is identical with the sense of rotation of upper cap nut 4.
Claims (8)
1. a Crank Pin on Pumping Units multiple nuts locking device, it is characterized in that, described device comprises Crank Pin on Pumping Units (1), thread section boss (2), upper cap nut (4), lower nut (5), described Crank Pin on Pumping Units (1) first half section is provided with thread section (8), described thread section (8) front end is provided with thread section boss (2), the hand of spiral of described thread section (8) and thread section boss (2) is contrary, described thread section (8) is provided with lower nut (5), described thread section boss (2) is provided with upper cap nut (4), described upper cap nut (4) and lower nut (5) are arranged in loose-proof sleeve (6), spring pad (3) is provided with between described lower nut (5) and Crank Pin on Pumping Units (1).
2. a kind of Crank Pin on Pumping Units multiple nuts locking device according to claim 1, it is characterized in that, described upper cap nut (4) is left-handed nut, and described lower nut (5) is right-handed nut.
3. a kind of Crank Pin on Pumping Units multiple nuts locking device according to claim 1, it is characterized in that, described upper cap nut (4) is right-handed nut, and described lower nut (5) is left-handed nut.
4. a kind of Crank Pin on Pumping Units multiple nuts locking device according to claim 1, is characterized in that, described upper cap nut (4) and lower nut (5) intermediate section are outer-hexagonal nut, and the two ends up and down of described outer-hexagonal nut are provided with checknut section (7).
5. a kind of Crank Pin on Pumping Units multiple nuts locking device according to claim 1 or 4, it is characterized in that, the external diameter size of the checknut section (7) of described upper cap nut (4), lower nut (5) is identical, and the length being not less than the maximum diagonal of outer-hexagonal nut of checknut section (7) external diameter.
6. a kind of Crank Pin on Pumping Units multiple nuts locking device according to claim 1 or 4, is characterized in that, the thickness of described loose-proof sleeve (6) is not less than the summation of upper cap nut (4) and lower nut (5) thickness.
7. a kind of Crank Pin on Pumping Units multiple nuts locking device according to claim 1 or 4, is characterized in that, the sense of rotation of described loose-proof sleeve (6) is identical with the sense of rotation of upper cap nut (4).
8. a kind of Crank Pin on Pumping Units multiple nuts locking device according to claim 1, it is characterized in that, described upper cap nut (4) and lower nut (5) intermediate section are checknut section (7), and the two ends up and down of described checknut section (7) are provided with outer-hexagonal nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520373115.5U CN204828242U (en) | 2015-06-03 | 2015-06-03 | Crank of pumping unit sells multistage nut locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520373115.5U CN204828242U (en) | 2015-06-03 | 2015-06-03 | Crank of pumping unit sells multistage nut locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828242U true CN204828242U (en) | 2015-12-02 |
Family
ID=54685849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520373115.5U Expired - Fee Related CN204828242U (en) | 2015-06-03 | 2015-06-03 | Crank of pumping unit sells multistage nut locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041828A (en) * | 2015-06-03 | 2015-11-11 | 马鞍山聚力科技有限公司 | Multi-stage nut loosening preventing device for oil pumping unit crank pin |
-
2015
- 2015-06-03 CN CN201520373115.5U patent/CN204828242U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041828A (en) * | 2015-06-03 | 2015-11-11 | 马鞍山聚力科技有限公司 | Multi-stage nut loosening preventing device for oil pumping unit crank pin |
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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: 20151202 Termination date: 20160603 |