CN201187257Y - Reed type fall-proof inserted pin - Google Patents
Reed type fall-proof inserted pin Download PDFInfo
- Publication number
- CN201187257Y CN201187257Y CNU2008200286687U CN200820028668U CN201187257Y CN 201187257 Y CN201187257 Y CN 201187257Y CN U2008200286687 U CNU2008200286687 U CN U2008200286687U CN 200820028668 U CN200820028668 U CN 200820028668U CN 201187257 Y CN201187257 Y CN 201187257Y
- Authority
- CN
- China
- Prior art keywords
- pin
- reed
- leaf spring
- straight pin
- locknut
- 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 - Lifetime
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Abstract
The utility model relates to a leaf spring type anti-drop bolt. In the prior art, most of the plug-in type spiral drill pipe bolts are U-shaped bolts and easily fall off in use, thereby resulting in not stable connection; the ordinary round pin transmission is adopted, and the way that a cotter pin is utilized to prevent the fall-off is utilized, the structure is simple, but the connection is unstable. The leaf spring type anti-drop bolt comprises a round pin (1), a leaf spring (2) and a lock nut (3). The round pin (1) is used to connect tow drill pipes and pass drilling pullout force. The leaf spring (2) is pressed tightly through the coordination of the lock nut (3) and the round pin (1). The leaf spring (2) is utilized to prevent the axial float of the round pin (1); and the notch surface of the lock nut (3) is utilized to prevent the rotation of the leaf spring (2). The utility mode has the characteristics of simple structure, unlikeliness of rotation and fall-off, convenient installation and disassembly, and reliable connection.
Description
Technical field
The utility model relates to the drilling tools class, is the reed type shedding-proof inserted pin that a kind of auger stem is used specifically.
Background technology
Plug-in type auger stem latch mostly is " U " shape pin at present, and " U " shape pin easily comes off in the use, connects not too reliable; Adopt common straight pin transmission in addition, and utilize the mode of cottor pin slip-off preventing, it is simple in structure, and it is unreliable to connect.
Summary of the invention
The purpose of this utility model is to provide a kind of reed type shedding-proof inserted pin with handiness, practical and reliable auger stem connection usefulness.
In order to achieve the above object, the technical solution adopted in the utility model is:
A kind of reed type shedding-proof inserted pin, latch are arranged in the pin-and-hole of two tool joints; Its special character is: described latch is made of straight pin 1, reed 2 and locknut 3 three parts, and an end of described straight pin 1 is connected with locknut 3, and its other end is arranged in the pin-and-hole of two tool joints 4; The reed 2 of the axial float that prevents straight pin 1 is set between described straight pin 1 and the locknut 3, and the tail end of reed 2 is shaped as and tool joint can be encased, and prevents the arc that straight pin comes off.
Above-mentioned straight pin 1 end is provided with screw thread, is used for and being connected of locknut 3.
The diameter of above-mentioned straight pin 1 is 3-50mm.
Above-mentioned reed 2 thickness are 0.5-10mm.
The straight pin of above-mentioned reed 2 and the flat end between the locknut are provided with circular hole, with being connected of straight pin 1.
Above-mentioned locknut 3 is provided with the breach plane, prevents the rotation of reed 2.
The utility model is as follows with respect to the advantage of prior art: reed type shedding-proof inserted pin is simple in structure, be difficult for rotating and coming off practical reliable, easy disassembling.
Description of drawings
Fig. 1 reed type shedding-proof inserted pin structural representation;
Label declaration: 1-straight pin, 2-reed, 3-locknut, 4-tool joint
Specific embodiment
A kind of reed type shedding-proof inserted pin, latch are arranged in the pin-and-hole of two tool joints; Its structure is made of straight pin 1, reed 2 and locknut 3 three parts, and an end of described straight pin 1 is connected with locknut 3, and its other end is arranged in the pin-and-hole of two tool joints 4, rely on straight pin 1 to connect two drilling rods, and transmission feeds pulling force; The reed 2 of the axial float that prevents straight pin 1 is set between described straight pin 1 and the locknut 3, relies on the cooperation of locknut 3 and straight pin 1 to compress reed 2, the tail end of reed 2 is shaped as and tool joint can be encased, and prevents the arc that straight pin comes off.
Above-mentioned straight pin 1 end is provided with screw thread, is used for and being connected of locknut 3; The diameter of straight pin 1 is 3-50mm.
The straight pin of above-mentioned reed 2 and the flat end between the locknut are provided with circular hole, with being connected of straight pin 1; Be used for and being connected of straight pin 1, rely on locknut 3 that it is compressed; Reed 2 thickness are 0.5-10mm.
Above-mentioned locknut 3 is provided with the breach plane, prevents the rotation of reed 2.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1, a kind of reed type shedding-proof inserted pin, latch are arranged in the pin-and-hole of two tool joints; It is characterized in that: described latch is made of straight pin (1), reed (2) and locknut (3) three parts, and an end of described straight pin (1) is connected with locknut (3), and its other end is arranged in the pin-and-hole of two tool joints (4); The reed (2) of the axial float that prevents straight pin (1) is set between described straight pin (1) and the locknut (3), and the tail end of reed (2) is shaped as and tool joint can be encased, and prevents the arc that straight pin comes off.
2, reed type shedding-proof inserted pin according to claim 1 is characterized in that: described straight pin (1) end is provided with screw thread, is used for and being connected of locknut (3).
3, reed type shedding-proof inserted pin according to claim 1 and 2 is characterized in that: the diameter of described straight pin (1) is 3-50mm.
4, reed type shedding-proof inserted pin according to claim 3 is characterized in that: described reed (2) thickness is 0.5-10mm.
5, reed type shedding-proof inserted pin according to claim 3 is characterized in that: the straight pin of described reed (2) and the flat end between the locknut are provided with circular hole, with being connected of straight pin (1).
6, reed type shedding-proof inserted pin according to claim 3 is characterized in that: described locknut (3) is provided with the breach plane, prevents the rotation of reed (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200286687U CN201187257Y (en) | 2008-03-26 | 2008-03-26 | Reed type fall-proof inserted pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200286687U CN201187257Y (en) | 2008-03-26 | 2008-03-26 | Reed type fall-proof inserted pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187257Y true CN201187257Y (en) | 2009-01-28 |
Family
ID=40310276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200286687U Expired - Lifetime CN201187257Y (en) | 2008-03-26 | 2008-03-26 | Reed type fall-proof inserted pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187257Y (en) |
-
2008
- 2008-03-26 CN CNU2008200286687U patent/CN201187257Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RE Free format text: FORMER NAME: SIAN BRANCH OF CHINA COAL RESEARCH INSTITUTE Owner name: XI'AN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY Free format text: FORMER NAME: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RESEARCH INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710077 No. 82, Kam Yip Road, hi tech Industrial Development Zone, Shaanxi, Xi'an Patentee after: CCTEG Xi'an Research Institute Address before: 710077 No. 82, Kam Yip Road, hi tech Industrial Development Zone, Shaanxi, Xi'an Patentee before: Xi'an Research Institute Of China Coal Research Institute Address after: 710077 No. 82, Kam Yip Road, hi tech Industrial Development Zone, Shaanxi, Xi'an Patentee after: Xi'an Research Institute Of China Coal Research Institute Address before: 710077 No. 82, Kam Yip Road, hi tech Industrial Development Zone, Shaanxi, Xi'an Patentee before: Xi'an Branch of China Coal Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090128 |