CN203050563U - Multi-layer polish rod clip without indentation - Google Patents
Multi-layer polish rod clip without indentation Download PDFInfo
- Publication number
- CN203050563U CN203050563U CN 201320077683 CN201320077683U CN203050563U CN 203050563 U CN203050563 U CN 203050563U CN 201320077683 CN201320077683 CN 201320077683 CN 201320077683 U CN201320077683 U CN 201320077683U CN 203050563 U CN203050563 U CN 203050563U
- Authority
- CN
- China
- Prior art keywords
- tooth
- polished rod
- indentation
- polish rod
- clip
- 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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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model relates to a multi-layer polish rod clip without indentation, which solves the problems that a tooth point of the polish rod clip without the indentation is easily abraded, and the indentation is easily generated on the surface of the polish rod. The multi-layer polish rod clip without the indentation is characterized in that clip teeth (6) are all embedded inside a left clip body (1) and a right clip body (2); each clip tooth (6) is composed of three tooth bodies which are arranged longitudinally; and the inner surface of each tooth body is provided with spiral oblique teeth. When the multi-layer polish rod clip without the indentation is used, a clamping force is increased, the tooth point is not easily abraded, and the indentation cannot be generated on the surface of a polish rod.
Description
Technical field
The utility model relates to the field, oil field, and a kind of multilayer does not have impression polished rod clamp specifically.
Background technology
Screw pump is when work on the oil field, and polished rod is connected with upper drive mechanism by the polished rod clamp.Present polished rod clamp directly is clamped on the polished rod outside, the straight-tooth of clamp inner surface and polished rod skin friction, and by the clamping force of bolt polished rod is tightened.But adopt the polished rod clamp of this structure, crown is easy to wear on the one hand, reduces clamping force, easily produces impression on the polished rod surface on the other hand, the damage polished rod.
Summary of the invention
Existing polished rod clamp crown is easy to wear in order to overcome, the deficiency of the surperficial easy generation impression of polished rod, the utility model provides a kind of multilayer not have impression polished rod clamp, and this multilayer does not have impression polished rod clamp in use, has increased clamping force, crown is not easy to wear, and the polished rod surface can not produce impression.
The technical solution of the utility model is: a kind of multilayer does not have impression polished rod clamp, comprise left side card body, right card body, and Zuo Kati, right card body connect by bolt, described left side card body, right card body inside all are inlaid with the card tooth, described card tooth is made up of at least three tooth bodies of vertically arranging, and each tooth body inner surface is equipped with the spirality helical teeth.
The lead angle difference of described each tooth body inner surface helical teeth.
The utlity model has following beneficial effect: owing to take such scheme, the card tooth is made up of at least three tooth bodies, and tooth body inner surface has the spirality helical teeth, this polished rod clamp is when clamping like this, both increase clamping force, and alleviated greatly again polished rod is caused impression, avoided damaging polished rod, and the clamp crown is not easy to wear, thereby has prolonged the application life of polished rod and polished rod clamp.
Description of drawings
Fig. 1 is vertical view of the present utility model;
Fig. 2 is the sectional view of the utility model front view.
1-left side card body among the figure, the right card of 2-body, 3-nut, 4-bolt, 5-polished rod, 6-card tooth.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Shown in Fig. 1, Fig. 2, a kind of multilayer does not have impression polished rod clamp, comprises left card body 1, right card body 2, and body 1 is blocked on a left side, right card body 2 connects by bolt 4, described left side card body 1, right card body 2 inside all are inlaid with card tooth 6, and card tooth 6 also can be fixed on the left and right card body by screw.Described card tooth 6 is made up of at least three tooth bodies of vertically arranging, each tooth body inner surface is equipped with the spirality helical teeth, the spirality helical teeth is when clamping, both increased clamping force, and can avoid again polished rod is caused impression, simultaneously, vertical a plurality of tooth bodies of arranging, increased the contact area of clamp and polished rod, simultaneously the helical teeth of each tooth body inner surface staggers mutually, increased greatly and polished rod between frictional force.As preferably, the lead angle difference of described each tooth body inner surface helical teeth, like this, can further increase clamping force, when clamping polished rod, can avoid polished rod is caused the impression damage, and the clamp crown is not easy to wear, thereby has prolonged the application life of polished rod and polished rod clamp.
Claims (2)
1. a multilayer does not have impression polished rod clamp, comprise left side card body (1), right card body (2), and Zuo Kati (1), right card body (2) connect by bolt (4), it is characterized in that: described left side card body (1), right card body (2) inside all are inlaid with card tooth (6), described card tooth (6) is made up of at least three tooth bodies of vertically arranging, and each tooth body inner surface is equipped with the spirality helical teeth.
2. multilayer according to claim 1 does not have impression polished rod clamp, it is characterized in that: the lead angle difference of described each tooth body inner surface helical teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320077683 CN203050563U (en) | 2013-02-20 | 2013-02-20 | Multi-layer polish rod clip without indentation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320077683 CN203050563U (en) | 2013-02-20 | 2013-02-20 | Multi-layer polish rod clip without indentation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203050563U true CN203050563U (en) | 2013-07-10 |
Family
ID=48733528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320077683 Expired - Fee Related CN203050563U (en) | 2013-02-20 | 2013-02-20 | Multi-layer polish rod clip without indentation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203050563U (en) |
-
2013
- 2013-02-20 CN CN 201320077683 patent/CN203050563U/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: 20130710 Termination date: 20150220 |
|
| EXPY | Termination of patent right or utility model |