CN202431215U - Drill bit connecting bar - Google Patents
Drill bit connecting bar Download PDFInfo
- Publication number
- CN202431215U CN202431215U CN2011205006383U CN201120500638U CN202431215U CN 202431215 U CN202431215 U CN 202431215U CN 2011205006383 U CN2011205006383 U CN 2011205006383U CN 201120500638 U CN201120500638 U CN 201120500638U CN 202431215 U CN202431215 U CN 202431215U
- Authority
- CN
- China
- Prior art keywords
- drilling rod
- drill
- drill stem
- drill bit
- head
- 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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Abstract
The utility model discloses a drill bit connecting bar which comprises a drill stem. The drill stem is a hollow conical steel jacket. The middle of the drill stem is provided with a through hole leading from the head of the drill stem to the tail of the drill stem. Bore diameter of the head of the drill stem is small, and the head of the drill stem is provided with an external connection thread. The bore diameter of the tail of the drill stem is large, and the tail of the drill stem is provided with a drill connector. The drill connector is provided with an internal thread. The drill bit connecting bar is high in bending strength, high in wear resistance, easy to mount and demount, and convenient to operate.
Description
Technical field
The utility model relates to a kind of drill bit connecting rod.
Background technology
At present, the drilling rod connecting rod is of a great variety in the existing technology, and for example anchor pole is required B19 and B22 Roofbolt drill rod and the connecting rod of perforating in the supporting process; The drilling rod body adopts the hollow hexagonal steel, and material is 55SiMnMoV, and afterbody is fit to supporting various hydraulic jumbolters; Head can connect all kinds of anchor bits of inside and outside button, but exists a little less than the resistance to bending, and abrasion resistance is low; Loading and unloading difficulties, connected mode have two kinds of internal thread and external screw threads.
The utility model content
The utility model provides a kind of resistance to bending strong, and abrasion resistance is high, and loading and unloading are easy, easy to operate drill bit connecting rod.
The utility model technical solution problem provides following scheme:
A kind of drill bit connecting rod; Comprise the drilling rod body, said drilling rod body is the hollow taper steel bushing, and said drilling rod body middle part has the through hole that connects drilling rod head and afterbody; It is characterized in that: the head bore of said drilling rod body is less to be provided with outer connecting thread; The afterbody bore of said drilling rod is bigger, and the afterbody of said drilling rod is provided with the rig joint, and said rig joint is provided with internal thread.
The interlude of said drilling rod is provided with spacing draw-in groove.
The utility model afterbody is provided with the rig field joint, on the drilling rod upper side wall, is provided with drill bit and connects external screw thread, is provided with interior connecting thread at the afterbody of drill sleeve, and the utility model resistance to bending is strong, and abrasion resistance is high, and loading and unloading easily, and are easy to operate.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Referring to accompanying drawing, a kind of drill bit connecting rod comprises drilling rod body 1; Said drilling rod body 1 is the hollow taper steel bushing, and said drilling rod body 1 middle part has the through hole 2 that connects drilling rod head and afterbody, and the head bore of said drilling rod body 1 is less to be provided with outer connecting thread 3; The afterbody bore of said drilling rod is bigger; The afterbody of said drilling rod is provided with rig joint 4, and said rig joint 4 is provided with internal thread 5, and the interlude of said drilling rod 1 is provided with spacing draw-in groove 6.
Claims (2)
1. drill bit connecting rod; Comprise the drilling rod body, said drilling rod body is the hollow taper steel bushing, and said drilling rod body middle part has the through hole that connects drilling rod head and afterbody; It is characterized in that: the head bore of said drilling rod body is less to be provided with outer connecting thread; The afterbody bore of said drilling rod is bigger, and the afterbody of said drilling rod is provided with the rig joint, and said rig joint is provided with internal thread.
2. according to the said drill bit connecting rod of claim 1, it is characterized in that: the interlude of said drilling rod is provided with spacing draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205006383U CN202431215U (en) | 2011-12-06 | 2011-12-06 | Drill bit connecting bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205006383U CN202431215U (en) | 2011-12-06 | 2011-12-06 | Drill bit connecting bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202431215U true CN202431215U (en) | 2012-09-12 |
Family
ID=46780675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205006383U Expired - Fee Related CN202431215U (en) | 2011-12-06 | 2011-12-06 | Drill bit connecting bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202431215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060659A (en) * | 2017-05-08 | 2017-08-18 | 天津中新安德科技有限公司 | A kind of New well drilling swivel joint |
-
2011
- 2011-12-06 CN CN2011205006383U patent/CN202431215U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060659A (en) * | 2017-05-08 | 2017-08-18 | 天津中新安德科技有限公司 | A kind of New well drilling swivel joint |
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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: 20120912 Termination date: 20121206 |