CN203050591U - Profiled fishing drill bit - Google Patents
Profiled fishing drill bit Download PDFInfo
- Publication number
- CN203050591U CN203050591U CN 201220604775 CN201220604775U CN203050591U CN 203050591 U CN203050591 U CN 203050591U CN 201220604775 CN201220604775 CN 201220604775 CN 201220604775 U CN201220604775 U CN 201220604775U CN 203050591 U CN203050591 U CN 203050591U
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- CN
- China
- Prior art keywords
- fishing
- drill bit
- profiled
- rod
- drill
- 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 provides a profiled fishing drill bit, which comprises a profiled drill bit matrix, diamond compact tool bits and binder dents. The profiled fishing drill bit is technically characterized in that a certain area size is inwards removed from an end face of the drill bit matrix to a certain depth so as to form a stepping cutting edge surface, and the diamond compact tool bits are uniformly distributed on the surface. The other end adopts a screw thread manner and is connected to a fishing drill rod. A certain quantity of binder dents are uniformly distributed on a cylindrical surface of the drill bit matrix. The profiled fishing drill bit has the advantages that processing time for rod breakage, tripping and other special working conditions is effectively reduced. Due to the adoption of the stepping profiled cutting edge surface, the fishing drilling rod is easier in butt joint with a broken drill rod or a tripped drill rod. The success rate of original hole fishing is improved, and the abandoned hole rate is reduced. The practicability of the profiled fishing drill bit is stronger. Original hole drill rod fishing can be carried out in coal or rock, and special working condition accidents such as tripping of the drill rod and rod breakage occurred in drilling construction can be processed. An object is fished up from a drill hole through a drilling machine, so that a fishing effect is achieved.
Description
Technical field
The utility model relates to a kind of colliery and salvages drill bit, particularly a kind ofly handles the abnormal shape that under coal mine rig carries out special operation conditions such as drilling rod takes place in the drilling process disconnected bar, dropout and salvages drill bit.
Background technology
Salvaging drill bit is ingredient indispensable in the fishing tool, present existing salvaging drill bit is after being delivered to drill rod breaking or dropout place, difficulty is docked drilling rod herein, but drill bit cutting edge end face pushes up, is stuck on the drill rod breaking end face or on the drilling rod end face of threading off, cause the salvaging drilling rod to be difficult to connect with fracture drilling rod and dropout drilling rod, the processing time of special operation condition also will prolong.
Summary of the invention
The purpose of this utility model is at existing in order to overcome above-mentioned shortcoming and defect in the above-mentioned technology, a kind of special-shaped drill bit of salvaging is provided, adopt stepped cutting edge end face, when the drill rod thread end face of the fracture end face of running into drilling rod or dropout and can't creep into forward and reach when butt joint, salvage drilling rod by rotation and drive the rotation of salvaging drill bit, to be salvaged drilling rod introduces in the salvaging drill bit, thereby realization salvaging drilling rod docks with fracture drilling rod or dropout drilling rod, make that the processing time of special operation condition shortens greatly in the borer drilling procedure, and reduce useless porosity, it is higher to improve drilling efficiency.To putting forward Safety of Coal Mine Production efficient important meaning is arranged.
The purpose of this utility model is achieved in that and comprises carcass, deburring tooth, cutter head, is welded to form by fishing joint and drill rod thread joint two parts.It is characterized in that, the bit matrix end face inwardly excises, area size and the degree of depth are set according to actual needs, end face is stepped end face not at a horizontal plane, forms stepped edge surface, its inner surface is manufactured with the spigot surface of inclination, uniform deburring tooth on the carcass cylinder, its effect are to make the fineness of hole wall better, become porosity to be greater than the boring that not use is with the drill bit of deburring tooth to get out.Uniform diamond compact cutter head has improved drilling efficiency on the stepped edge surface of carcass.At the other end of carcass, adopt the form that is threaded, internal and external screw thread all can.
The beneficial effects of the utility model are: effectively reduce the processing time of resolving bar, dropout special operation condition.Owing to adopt stepped special-shaped edge surface, make and salvage drilling rod with the fracture drilling rod or the dropout drilling rod is easier achieves a butt joint.Make that the processing time of special operation condition shortens greatly in the borer drilling procedure, and reduce useless porosity, it is higher to improve drilling efficiency.To putting forward Safety of Coal Mine Production efficient important meaning is arranged.
Description of drawings
Fig. 1 is structure chart of the present utility model
The specific embodiment
Below in conjunction with accompanying drawing present embodiment is described further
As shown in Figure 1, the bit matrix end face inwardly excises, and area size and the degree of depth are set according to actual needs, form stepped edge surface, uniform deburring tooth 2 on carcass 1 cylinder, the main of deburring tooth plays a part to protect directly, make hole wall even, easier when drilling.Its effect is to make the fineness of hole wall better, becomes porosity to be greater than the boring that not use is with the drill bit of deburring tooth to get out.Uniform diamond compact cutter head 3 on the stepped edge surface of carcass 1, cutter edge surface are stepped cutting edge not at a horizontal plane.Improved drilling efficiency.At the other end of special-shaped bit matrix 1, adopt the form that is threaded, internal and external screw thread all can, be connected to and salvage on the drilling rod.Easy to connect, reliable.Can in coal or rock, carry out the foramen primum drilling rod and salvage, handle special operation condition accidents such as the drilling rod that occurs in the drilling construction is threaded off, disconnected bar.This drill bit adopts notch cuttype form of structure, salvages drilling rod by rotation, and effectively the dropout drilling rod in the butt hole or fracture drilling rod are hauled out it in boring by rig afterwards, reach the salvaging effect.
Claims (1)
1. the special-shaped drill bit of salvaging comprises carcass, deburring tooth, cutter head, it is characterized in that, the bit matrix end face inwardly excises, and area size and the degree of depth are set according to actual needs, form stepped edge surface, end face is not at a horizontal plane, be stepped end face, its inner surface is manufactured with the spigot surface of inclination, uniform deburring tooth on the carcass cylinder, uniform diamond compact cutter head on the stepped edge surface of carcass, at the other end of carcass, adopt the form that is threaded, internal and external screw thread all can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604775 CN203050591U (en) | 2012-11-16 | 2012-11-16 | Profiled fishing drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604775 CN203050591U (en) | 2012-11-16 | 2012-11-16 | Profiled fishing drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203050591U true CN203050591U (en) | 2013-07-10 |
Family
ID=48733556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220604775 Expired - Fee Related CN203050591U (en) | 2012-11-16 | 2012-11-16 | Profiled fishing drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203050591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966326A (en) * | 2012-11-16 | 2013-03-13 | 沈阳北方重矿机械有限公司 | Profiled salvage drill bit |
-
2012
- 2012-11-16 CN CN 201220604775 patent/CN203050591U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966326A (en) * | 2012-11-16 | 2013-03-13 | 沈阳北方重矿机械有限公司 | Profiled salvage drill bit |
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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: 20130710 Termination date: 20151116 |
|
| EXPY | Termination of patent right or utility model |