CN203702053U - Guide cone - Google Patents
Guide cone Download PDFInfo
- Publication number
- CN203702053U CN203702053U CN201320872830.4U CN201320872830U CN203702053U CN 203702053 U CN203702053 U CN 203702053U CN 201320872830 U CN201320872830 U CN 201320872830U CN 203702053 U CN203702053 U CN 203702053U
- Authority
- CN
- China
- Prior art keywords
- tool steel
- cone
- steel cone
- head end
- screw thread
- 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
Links
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- Earth Drilling (AREA)
Abstract
The utility model discloses a guide cone which is formed by a tool steel cone (2); the tool steel cone (2) is hollow; the outer diameter of the large-head end of the tool steel cone is the same as that of a drill bit; threading die threads (1) matched with the diameter of a drill rod are machined at the large-head end of the tool steel cone (2); external threads (3) matched with the connection threads of the drill rod are machined in the small-head end of the tool steel cone; a section of inner conical surface achieving a guiding function is arranged between the threading die threads (1) and the end surface of the large-head end of the tool steel cone (2). Compared with the prior art, the guide cone has the advantages that as the diameter of the end surface of the large-head end of the tool steel cone is the same as the outer diameter of the drill bit, and one section of the inner conical surface achieving the guiding function is arranged between the threading die threads and the end surface of the large-head end of the tool steel cone, the guide cone can be fast positioned with the broken drill rod, and the work efficiency is high.
Description
Technical field
The utility model relates to a kind of fishing tool, the especially a kind of guide cone that can salvage drilling rod.
Background technology
In underground construction, due to formation variations, the drilling rod damage that very easily fractures.At present, salvage drilling rod and generally use jig, salvaging efficiency is low, wastes time and energy.Therefore, designing a kind of guide cone that efficiency is high of salvaging, is the current technical issues that need to address.
Summary of the invention
The technical scheme in the invention for solving the technical problem is to provide a kind of guide cone that efficiency is high of salvaging.
The technical scheme in the invention for solving the technical problem is:
Guide cone, formed by tool steel cone, tool steel cone hollow body, the external diameter of the stub end of tool steel cone is the same with the external diameter of drill bit, be processed with the bolt die screw thread mating with drill pipe diameter at the stub end of tool steel cone, be processed with the external screw thread mating with drilling rod connecting thread at little head end.
As a kind of preferred version of the present utility model, between the end face of the stub end of bolt die screw thread and tool steel cone, there is one section of inner conical surface playing the guiding role.
Using method of the present utility model:
First the utility model is connected with drilling rod, then put in boring, on the drilling rod that the utility model is enclosed within fracture, starting rig can be connected in the mode of mantle fiber the drilling rod fractureing with the utility model, and finally promoting drilling rod can extract the drilling rod fractureing together with drill bit.
Compared with prior art, the utility model is because the diameter of the stub end of tool steel cone is the same with the external diameter of drill bit, and between the end face of the stub end of bolt die screw thread and tool steel cone, have one section of inner conical surface playing the guiding role, can locate with the drilling rod fractureing rapidly, operating efficiency is high.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation
Fig. 2 is the right view of Fig. 1.
The specific embodiment
Guide cone, formed by tool steel cone 2, tool steel cone 2 hollow bodies, the external diameter of the stub end of tool steel cone 2 is the same with the external diameter of drill bit, be processed with the bolt die screw thread 1 mating with drill pipe diameter at the stub end of tool steel cone 2, be processed with the external screw thread 3 mating with drilling rod connecting thread at little head end.Between the end face of the stub end of bolt die screw thread 1 and tool steel cone 2, there is one section of inner conical surface playing the guiding role 4.
Claims (2)
1. guide cone, formed by tool steel cone (2), it is characterized in that, tool steel cone (2) hollow body, the external diameter of stub end of tool steel cone (2) is the same with the external diameter of drill bit, be processed with the bolt die screw thread (1) mating with drill pipe diameter at the stub end of tool steel cone (2), be processed with the external screw thread (3) mating with drilling rod connecting thread at little head end.
2. guide cone according to claim 1, is characterized in that, between the end face of the stub end of bolt die screw thread (1) and tool steel cone (2), has one section of inner conical surface playing the guiding role (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320872830.4U CN203702053U (en) | 2013-12-28 | 2013-12-28 | Guide cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320872830.4U CN203702053U (en) | 2013-12-28 | 2013-12-28 | Guide cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702053U true CN203702053U (en) | 2014-07-09 |
Family
ID=51052509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320872830.4U Expired - Fee Related CN203702053U (en) | 2013-12-28 | 2013-12-28 | Guide cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702053U (en) |
-
2013
- 2013-12-28 CN CN201320872830.4U patent/CN203702053U/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: 20140709 Termination date: 20141228 |
|
| EXPY | Termination of patent right or utility model |