CN2252879Y - Spiral teeth polish rod clamp - Google Patents
Spiral teeth polish rod clamp Download PDFInfo
- Publication number
- CN2252879Y CN2252879Y CN 96226569 CN96226569U CN2252879Y CN 2252879 Y CN2252879 Y CN 2252879Y CN 96226569 CN96226569 CN 96226569 CN 96226569 U CN96226569 U CN 96226569U CN 2252879 Y CN2252879 Y CN 2252879Y
- Authority
- CN
- China
- Prior art keywords
- tooth
- polish rod
- rod clamp
- spiral
- polished rod
- 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.)
- Revoked
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- Earth Drilling (AREA)
Abstract
The utility model relates to a spiral tooth polish rod clamp used for an oil pumping machine well of an oil field, which is composed of a tile body (1), a clamping tooth (3), a bolt (4), and a nut (2). Due to the fact that a spiral inclined tooth is adopted by the clamping tooth of the spiral tooth polish rod clamp, the spiral tooth polish rod clamp can overcome the defect that the past straight tooth polish rod clamp easily forms pressing traces to a polished rod to cause the bad results of stress concentration, early fatigue fracture, etc. Thereby, the service life of the polished rod is extended, and the production time effect and the economical benefit of an oil pumping well are enhanced.
Description
The utility model relates to a kind of wellhead assembly that is used for oilfield pumping well: the helical tooth polish rod clamp.
Polish rod clamp is the usual means that the pumpingh well oil pumper is connected with wellhead polish rod.At present, the on-the-spot polished rod clamp that uses is straight-tooth card tooth.Because this kind card tooth type is rectangular in shape (promptly block pitch thread and the polished rod axis meets at right angles), behind the chucking polished rod, easily form the straight-tooth annular indentation, cause adverse consequences such as polished rod stress is concentrated, early fatigue fracture, influence the pumpingh well ordinary production, increase maintenance, cost of production.
The purpose of this utility model is to provide a kind of helical tooth polish rod clamp, utilizes this kind polish rod clamp can avoid or alleviate the card tooth polished rod is caused impression, eliminates destructive stress, thereby prolongs polished rod application life, improves pumpingh well production timeliness and economic benefit.
The utility model is to realize like this.It is made up of a watt body (1), card tooth (3), bolt (4) and nut (2), its structure is as follows with the assembling feature: in the groove of two slices watts of bodies (1) of relative assembly unit respectively device have two to block teeth (3), two bolts (4) penetrate a watt body (1) both sides eyelet and the nut of screwing on (2) respectively and two slices watts of bodies are assembled are fixed as one.
Fig. 1 is a general structure schematic diagram of the present utility model.Wherein, label 5 is a polished rod.
Fig. 2 is card tooth (3) sectional view.
Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.
In the utility model, watt body (1) middle part semicircle groove face is 1: 10 inverted cone surface of tapering, and both sides symmetry respectively have 2 and wear the bolt eyelet.Card tooth (3) has the hollow semicircle cone of limited step for the lower end, its male cone (strobilus masculinus) and limited step match with a watt body (1) groove inner conical surface and bottom surface step dimension respectively, inner headed face has the spirality helical teeth, lead angle β (being the angle of helical teeth and axis) can big 0 °, change in less than 90 ° scope, i.e. 0 °＜β＜90 °, Ka Ya can make according to the polished rod diameter
With
32 4 kinds of specifications are changed the card tooth and can be satisfied instructions for use under the constant situation of watt body.
The utility model is reasonable in design, novel structure, reliable operation, utilize it not only can satisfy pumpingh well and produce needs, and can overcome the straight-tooth polish rod clamp easily forms impression, damage to polished rod shortcoming, prolong polished rod application life, improve pumpingh well production timeliness and economic benefit, be suitable for and apply.
Claims (1)
1, a kind of pumpingh well helical tooth polish rod clamp is made up of a watt body (1), card tooth (3), bolt (4) and nut (2), it is characterized in that: card tooth (3) inner headed face has the spirality helical teeth, and lead angle β can change in ° scope of 0 °＜β＜90.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96226569 CN2252879Y (en) | 1996-06-14 | 1996-06-14 | Spiral teeth polish rod clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96226569 CN2252879Y (en) | 1996-06-14 | 1996-06-14 | Spiral teeth polish rod clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2252879Y true CN2252879Y (en) | 1997-04-23 |
Family
ID=33904915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96226569 Revoked CN2252879Y (en) | 1996-06-14 | 1996-06-14 | Spiral teeth polish rod clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2252879Y (en) |
-
1996
- 1996-06-14 CN CN 96226569 patent/CN2252879Y/en not_active Revoked
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C28 | Revocation of patent right or utility model | ||
| RW01 | Full revocation of patent right |
Decision date of revocation: 19990113 |