CN201351466Y - Anti-drop square clamp - Google Patents
Anti-drop square clamp Download PDFInfo
- Publication number
- CN201351466Y CN201351466Y CNU2009200190585U CN200920019058U CN201351466Y CN 201351466 Y CN201351466 Y CN 201351466Y CN U2009200190585 U CNU2009200190585 U CN U2009200190585U CN 200920019058 U CN200920019058 U CN 200920019058U CN 201351466 Y CN201351466 Y CN 201351466Y
- Authority
- CN
- China
- Prior art keywords
- square clamp
- drop
- square
- clamp
- main body
- 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 oil field tool, in particular to an anti-drop square clamp, which adopts the technical scheme that the anti-drop square clamp mainly comprises a square clamp body and a slip sheet; wherein the conical inner surface of the square clamp body is provided with grooves; and balls are arranged in the grooves. The anti-drop square clamp has the benefits that 1. The structure is simple, and the processing is convenient; 2. The repeated workload is reduced, and the working efficiency is improved in the application of the anti-drop square clamp; 3. The accidents of hurting the fingers and palms of the operating personnel owing to dropping of the square clamp are decreased.
Description
One, technical field:
The utility model relates to a kind of oil field instrument, particularly a kind of anti-off-square clamp.
Two, background technology:
Fang Kazi uses very extensive in oil well management, measure are implemented.But in actual mechanical process, the often loosening slippage of square clamp body and slip insert causes repeated workload, even the incident that the square clamp that falls is hindered hand also happens occasionally.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, a kind of anti-off-square clamp is provided, be designed to rolling friction at square clamp body circular cone inner surface, the side's of utilization clamp body and the relative motion of slip insert in the slippage process be the locking polished rod again, can continue to finish next step operation sequence, the minimizing accident takes place.
Its technical scheme is: mainly be made up of square clip main body and slips sheet, be provided with groove at the circular cone inner surface of described side's clip main body, load onto ball in the groove.
The circular cone inner surface of above-mentioned square clip main body is provided with the twice groove.
Principle according to relative motion: when polished rod has the trend of downward motion, because the sliding friction between slip insert sheet and the polished rod is greater than the rolling friction between slip insert sheet and the square clamp, thereby, during the downward rapid movement of slip insert sheet and polished rod, body has the trend that moves upward relatively, thereby realize loosening square clamp locking again, stop polished rod to continue to move downward.
The beneficial effects of the utility model are: 1, this apparatus structure is simple, and is easy to process; 2, anti-off-square clamp reduces repeated workload in application, increases work efficiency; 3, reduce because square clamp is taken off and made the generation that operating personnel point, palm injures accident by a crashing object.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
Five, the specific embodiment:
In conjunction with the accompanying drawings 1, the utility model will be further described:
Its technical scheme is: mainly be made up of square clip main body 1 and slips sheet 2, be provided with twice groove 5 at the circular cone inner surface of existing conventional side's clip main body 1, load onto ball 3 in the groove.
Principle according to relative motion: when polished rod 4 has the trend of downward motion, because the sliding friction between slip insert sheet and the polished rod is greater than the rolling friction between slip insert sheet and the square clamp, thereby, during the downward rapid movement of slip insert sheet and polished rod, body has the trend that moves upward relatively, thereby realize loosening square clamp locking again, stop polished rod to continue to move downward.
Claims (2)
1, a kind of anti-off-square clamp mainly is made up of square clip main body (1) and slips sheet (2), it is characterized in that: the circular cone inner surface in described side's clip main body (1) is provided with groove (5), loads onto ball (3) in the groove.
2, anti-off-square clamp according to claim 1, it is characterized in that: the circular cone inner surface of described side's clip main body (1) is provided with twice groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200190585U CN201351466Y (en) | 2009-02-12 | 2009-02-12 | Anti-drop square clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200190585U CN201351466Y (en) | 2009-02-12 | 2009-02-12 | Anti-drop square clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201351466Y true CN201351466Y (en) | 2009-11-25 |
Family
ID=41374854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200190585U Expired - Fee Related CN201351466Y (en) | 2009-02-12 | 2009-02-12 | Anti-drop square clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201351466Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720449A (en) * | 2012-06-15 | 2012-10-10 | 兰桥昌 | Clamping mechanism of automatic twisting machine of spindle-type drilling machine |
-
2009
- 2009-02-12 CN CNU2009200190585U patent/CN201351466Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720449A (en) * | 2012-06-15 | 2012-10-10 | 兰桥昌 | Clamping mechanism of automatic twisting machine of spindle-type drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20100212 |