CN201024932Y - Limit structure for jaw plate and tooth plate spring pin - Google Patents
Limit structure for jaw plate and tooth plate spring pin Download PDFInfo
- Publication number
- CN201024932Y CN201024932Y CNU2007200700080U CN200720070008U CN201024932Y CN 201024932 Y CN201024932 Y CN 201024932Y CN U2007200700080 U CNU2007200700080 U CN U2007200700080U CN 200720070008 U CN200720070008 U CN 200720070008U CN 201024932 Y CN201024932 Y CN 201024932Y
- Authority
- CN
- China
- Prior art keywords
- jaw
- pin
- dental lamina
- plate
- tooth plate
- 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 jaw plate and tooth plate spring pin limiting structure for the power tong of mechanical oil drilling rod. A coattail groove of the jaw plate is inserted with a tooth plate; the tooth plate is provided with two pin holes; a pin hole is arranged in the outside inclined surface of the jaw plate in the coattail groove direction; and a spring limiting pin is arranged in the pin hole between the jaw plate and the tooth plate. The structure can enhance the working contact surface of the tooth plate and simplify both assembly and disassembly of the spring pin and the tooth plate. With simple and reliable structure, the utility model can enhance the working quality of the power tong, prolong the service life of the jaw plate and the tooth plate and reduce the damage of the drilling pole connector.
Description
Technical field
The utility model relates to the jaw dental lamina spring catch position limiting structure of oil drilling machine drill pipe tong.
Background technology
Finish when the petroleum machinery drill pipe tong is mainly used in oil drilling and unload the operation of tool joint screw thread.The dental lamina that drill pipe tong is equipped with by jaw " is bitten " tool joint and is finished and unload screw thread, and dental lamina is installed in the dovetail groove of jaw, and two ends are spacing with screw.Because " bite " tool joint entirely by dental lamina, therefore the work contact surface of dental lamina is the bigger the better, but after the dental lamina two ends have two screws spacing, make dental lamina shorten 1/3rd contact surface, influenced the work quality of drill pipe tong and the application life and the damage tool joint easily of dental lamina jaw.
Summary of the invention
The utility model provides a kind of jaw dental lamina spring catch position limiting structure of petroleum machinery drill pipe tong, reaches to increase dental lamina work contact surface, in the application life of improving the dental lamina jaw, alleviates the damage of tool joint.
The technical scheme that its technical problem that solves the utility model adopts is: be bumped into dental lamina in the dovetail groove of jaw, two pin-and-holes are set on dental lamina, jaw is provided with pin-and-hole from inclined-plane, two outsides to the dovetail groove direction, the mounting spring pin is spacing in the pin-and-hole of jaw and dental lamina, and the loading and unloading of spring catch and dental lamina are all very convenient.
The beneficial effects of the utility model are: adopt jaw dental lamina spring catch position limiting structure, increase the work contact surface of dental lamina, loading and unloading spring catch and dental lamina are all very convenient, simple and reliable for structure, improve the work quality of drill pipe tong and the application life of dental lamina jaw, alleviate the damage of tool joint.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Figure one is a structure chart of the present utility model.
Among the figure 1, jaw, 2, spring catch, 3, dental lamina.
The specific embodiment
Jaw dental lamina spring catch position limiting structure, in the dovetail groove of jaw (1), be bumped into dental lamina (3), two pin-and-holes are set on dental lamina (3), and jaw (1) is provided with pin-and-hole from inclined-plane, two outsides to the dovetail groove direction, and mounting spring pin (2) is spacing in the pin-and-hole of jaw (1) and dental lamina (3).
Claims (3)
1. the jaw dental lamina spring catch position limiting structure of a petroleum machinery drill pipe tong, it is characterized in that: be bumped into dental lamina in the dovetail groove of jaw, the mounting spring pin is spacing in the pin-and-hole of jaw and dental lamina.
2. jaw dental lamina spring catch position limiting structure according to claim 1 is characterized in that being provided with pin-and-hole on dental lamina.
3. jaw dental lamina spring catch position limiting structure according to claim 1 is characterized in that jaw is provided with pin-and-hole from inclined-plane, two outsides to the dovetail groove direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200700080U CN201024932Y (en) | 2007-05-21 | 2007-05-21 | Limit structure for jaw plate and tooth plate spring pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200700080U CN201024932Y (en) | 2007-05-21 | 2007-05-21 | Limit structure for jaw plate and tooth plate spring pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024932Y true CN201024932Y (en) | 2008-02-20 |
Family
ID=39098789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200700080U Expired - Fee Related CN201024932Y (en) | 2007-05-21 | 2007-05-21 | Limit structure for jaw plate and tooth plate spring pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024932Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839931A (en) * | 2011-06-24 | 2012-12-26 | 苏州海德石油工具有限公司 | Drilling power tongs with improved structure |
| CN104499963A (en) * | 2014-11-24 | 2015-04-08 | 江苏如石机械有限公司 | Power-tongs spinning component and processing method thereof |
| CN104912500A (en) * | 2015-05-26 | 2015-09-16 | 成都高普石油工程技术有限公司 | Safe and reliable drilling rod unloading limiting mechanism |
-
2007
- 2007-05-21 CN CNU2007200700080U patent/CN201024932Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839931A (en) * | 2011-06-24 | 2012-12-26 | 苏州海德石油工具有限公司 | Drilling power tongs with improved structure |
| CN102839931B (en) * | 2011-06-24 | 2014-08-13 | 苏州海德石油工具有限公司 | Drilling power tongs with improved structure |
| CN104499963A (en) * | 2014-11-24 | 2015-04-08 | 江苏如石机械有限公司 | Power-tongs spinning component and processing method thereof |
| CN104499963B (en) * | 2014-11-24 | 2016-07-06 | 江苏如石机械有限公司 | Power Tong spinner parts and processing method |
| CN104912500A (en) * | 2015-05-26 | 2015-09-16 | 成都高普石油工程技术有限公司 | Safe and reliable drilling rod unloading limiting mechanism |
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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 |