CN2418250Y - Optical-rod clamp - Google Patents
Optical-rod clamp Download PDFInfo
- Publication number
- CN2418250Y CN2418250Y CN 00207284 CN00207284U CN2418250Y CN 2418250 Y CN2418250 Y CN 2418250Y CN 00207284 CN00207284 CN 00207284 CN 00207284 U CN00207284 U CN 00207284U CN 2418250 Y CN2418250 Y CN 2418250Y
- Authority
- CN
- China
- Prior art keywords
- polished rod
- clamp
- card body
- slips
- utility
- 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 relates to a polished-rod clamp of a pumping well for oil exploitation. The utility model is composed of a left clamp body, a right clamp body, clamp tiles, nuts, and bolts. The right clamp body is connected with the right clamp body into a whole through bolts and nuts. Clamp tiles are arranged in the holes of the middle parts of the left clamp body and the right clamp body. The utility model is characterized in that the internally circumferential surface of the clamp tile is provided with circular arc-shaped teeth. The utility model firmly clamps the polished rod, and guarantees the normal production of the oil well. As the internally circumferential surface of the clamp tile is the circular arc-shaped teeth, the scoring of the surface of the polished rod also forms a circular arc shape when the polished rod is clamped. The stress concentration of the polished rod on the polished-rod clamp is reduced, and the fatigue fracture of the polished rod is avoided.
Description
The utility model belongs to oil exploitation with the instrument that blocks oil pumping polish rod in the pumpingh well.
Existing polished rod clamp has or not tooth-like polished rod clamp and the interchangeable polished rod clamp of tooth is arranged.Do not have tooth-like polish rod clamp and bear pulling force by card body chucking back with the frictional force of polished rod, because frictional force is limited, reliability is low.There is the sub-slips inner circumferential surface of the interchangeable polish rod clamp of tooth that pointed tooth is arranged, during chucking tooth embedded the polished rod surface, make the polished rod surface produce many pointed scars, become stress raiser, polished rod is ruptured after fatigue.And for example patent No. 92204256.x does not have indentation oil pumping polish rod jig, needs many chucking bodies are installed, and inconvenience is installed and used at the scene, and the stuck point of chucking body is interrupted many places stuck point, and the polished rod deformation point is many, still can damage polished rod.
The purpose of this utility model provides a kind of pulling force that bears makes the polished rod surface not produce the pumpingh well polished rod clamp of pointed scar greatly again.
The purpose of this utility model is achieved in that it is made up of Zuo Kati, right card body, slips, nut, bolt.Zuo Kati, right card body and function bolt, nut join together, lay slips in the hole in the middle of Zuo Kati, right card body, and the inner circumferential surface of slips has the circular arc tooth.Go up jack panel during work, make left side card body, right card body pack tightly slips, the circular arc tooth card jail of slips is on polished rod.
Polished rod clamp of the present utility model can block firm polished rod, guarantee the oil well ordinary production, because the inner circumferential surface of slips is the circular arc tooth, the indentation on polished rod surface also is a circular arc during chucking polished rod, because the factor of stress concentration of circular arc indentation is lower than pointed dental impression, so the utility model can alleviate polished rod to be concentrated at the stress at polished rod clamp place, avoids the polished rod fatigue fracture.
Concrete structure of the present utility model is provided by following two embodiment and accompanying drawing thereof.
Accompanying drawing 1 is the front view of the utility model polished rod clamp.
Accompanying drawing 2 is thread form figure of slips in the utility model polished rod clamp.
Accompanying drawing 3 is the views (first kind of embodiment) after cutting open from A-A in the utility model polished rod clamp accompanying drawing 1.
Accompanying drawing 4 is the views (second kind of embodiment) after cutting open from A-A in the utility model polished rod clamp accompanying drawing 1.
In first kind of embodiment: by accompanying drawing 1,2,3 as can be seen, the utility model is made up of left side card body 1, slips 2, right card body 3, nut 4, bolt 5.Left side card body 1, right card body 3 usefulness bolts 5, nut 4 join together, lay slips 2 in the hole in the middle of left side card body 1, right card body 3, and the hole in the middle of left side card body 1, the right card body 3 and the external surface of slips 2 have tapering, and the inner circumferential surface of slips 2 has circular arc tooth B.Go up jack panel 4 during work, make left side card body 1, right card body 3 pack tightly slips 2, the circular arc tooth B card jail of slips 2 is on polished rod, and the indentation that makes polished rod also is a circular arc.
In second kind of embodiment: by accompanying drawing 1,2,4 as can be seen, the utility model is made up of left side card body 1, slips 2, right card body 3, nut 4, bolt 5.Left side card body 1, right card body 3 usefulness bolts 5, nut 4 join together, lay slips 2 in the hole in the middle of left side card body 1, right card body 3, the hole in the middle of left side card body 1, the right card body 3 and the external surface zero draft of slips 2, and the inner circumferential surface of slips 2 has circular arc tooth B.Go up jack panel 4 during work, make left side card body 1, right card body 3 pack tightly slips 2, the circular arc tooth B card jail of slips 2 is on polished rod, and the indentation that makes polished rod also is a circular arc.
Claims (2)
1, the pumpingh well polished rod clamp used of a kind of oil exploitation, form by Zuo Kati (1), right card body (3), slips (2), nut (4), bolt (5), Zuo Kati (1), right card body (3) join together with bolt (5), nut (4), lay slips (2) in the hole in the middle of Zuo Kati (1), the right card body (3), it is characterized in that the inner circumferential surface of slips (2) has circular arc tooth B.
2, polished rod clamp according to claim 1 is characterized in that the middle hole of body (3) is blocked on left side card body (1), the right side and the external surface of slips (2) has tapering or zero draft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00207284 CN2418250Y (en) | 2000-03-29 | 2000-03-29 | Optical-rod clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00207284 CN2418250Y (en) | 2000-03-29 | 2000-03-29 | Optical-rod clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2418250Y true CN2418250Y (en) | 2001-02-07 |
Family
ID=33574995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00207284 Expired - Fee Related CN2418250Y (en) | 2000-03-29 | 2000-03-29 | Optical-rod clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2418250Y (en) |
-
2000
- 2000-03-29 CN CN 00207284 patent/CN2418250Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |