CN201747278U - Local radius-expanding multi-wing expanding drill bit - Google Patents
Local radius-expanding multi-wing expanding drill bit Download PDFInfo
- Publication number
- CN201747278U CN201747278U CN2010201808766U CN201020180876U CN201747278U CN 201747278 U CN201747278 U CN 201747278U CN 2010201808766 U CN2010201808766 U CN 2010201808766U CN 201020180876 U CN201020180876 U CN 201020180876U CN 201747278 U CN201747278 U CN 201747278U
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- CN
- China
- Prior art keywords
- reaming
- wing
- drill bit
- expanding
- air flue
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- 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 relates to a local radius-expanding multi-wing expanding drill bit, which is formed by connecting an expanding knife-wing drill bit and a drill rod (16) through an upper connector (17). The characteristics are as follows: a drill bit (7) is connected with the expanding knife-wing drill bit through a lower connector (18). The advantages of the drill bit are as follows: the structure is simple; the performance is safe and reliable; the using is convenient; furthermore, the problem of the construction difficulty of soft/hard rock stratum of large expanding radius is solved.
Description
(1) technical field
The utility model relates to coal geological drilling, coal bed gas, mine gas drainage well brill, hole enlargement aperture apparatus, is specially locally expanded multi-wing expanding bit.
(2) background technology
In recent years, for the comprehensive utilization that improves coal resources and eliminate in the progress of coal mining and the accident that gas jeopardizes safety in production occurs, before coal mining, to be provided with the coal bed gas (gas) on construction ground and take out well in advance, perhaps the drawing-off gas well is set, extracts, collect coal bed gas in mine main.In construction; coal bed gas is taken out the coal seam well section of well or the certain well section of drawing-off gas well in advance; often need to carry out the part and make cave or hole enlargement;, can not be extruded and fracture, damage and scrap being lowered into the sleeve pipe in the well with the output that improves coal bed gas or protection because of depression, the dislocation that cause of being mined in the stratum.
Currently used reaming hole digging device, the patent No. that sees also the applicant is the 200620032323.x patent.This device comprises joint and reaming hole digging knife, hinge axis.Hinged between reaming hole digging knife and the joint, referring to accompanying drawing 1.The reaming hole digging device is connected with drilling rod during work, carry fluid (liquid, gas or gas liquid mixture) by ground by drilling tool, this fluid is by the air flue 1 of air flue 4---hollow hinge 3---the reaming hole digging knife body 2 of joint inside, the spouting generation thrust of nozzle from the reaming hole digging knife body 2 at last, reaming hole digging knife body 2 is deflected around hinge 3 lift, it is big that diameter becomes.Joint 5 rotates under the drive of drilling tool and makes scraping tooth scraping broken formation, reaches the purpose that the cave is drawn in reaming.Reaming finishes, and stops to supply with fluid, and reaming hole digging knife body 2 sagging resetting are finished reaming and drawn the cave operation.
The problem that this reamer exists: 1, reaming hole digging knife head is a single armed, the low poor stability of efficient during reaming, and the cave is drawn in the reaming that only suits in the coal seam; 2, because the intersect vertical axis of the axle center of the hinge axis of its design and joint is hinged, if change the both arms reaming cutter into, certainly will cause in joint diameter the same terms UR cutter head thickness attenuation intensity and reduce frangibility, have an accident, the reaming that equally sincerely suits in softer coal seam is drawn the cave and can not reaming be drawn the cave in harder rock stratum; 3, because the joint body lower end is short, do not set upright guide function, can not guarantee the desired aperture size quality requirement of reaming, the cave is drawn in the reaming that sincerely suits too in softer coal seam, can not satisfy in the rock stratum reaming and creep into.In sum, this hole digging device is difficult to realize that major diameter draws cave and reaming in small-bore rock stratum, do not reach the engineering construction requirement.
(3) utility model content
The purpose of the utility model is to overcome reamer arm frangibility of the prior art, aperture quality and can not guarantees etc. defective to provide a kind of novel locally expanded multi-wing expanding bit.
In order to realize above-mentioned purpose, the utility model is according to following technical scheme.This locally expanded multi-wing expanding bit is connected by last connector with drilling rod by reaming wing drill bit, it is characterized in that drill bit is connected by lower connector with reaming wing drill bit.
Described reaming wing drill bit is connected successively by drill bit guide sub, reaming wing body and drilling rod guide sub three parts, reaming wing and hollow hinge are hinged, the hollow hinge is fixed on the reaming wing body, have air flue in reaming wing body and the drilling rod guide sub, the perforation mode of air flue is drilling rod air flue, hollow hinge air flue and reaming wing air flue, and the three communicates successively.
Described hollow hinge is fixedly on the reaming wing body and depart from guide way axle center symmetric arrangement.
Superior part of the present utility model is: simple in structure, performance is safe and reliable, easy to use, has solved simultaneously at construction difficult problem soft, the big reaming radius of ground consisting of hard rock.
(4) description of drawings
Fig. 1 is the structural representation of injecting type hole hole digging device.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the structural representation of the utility model reaming wing body.
(5) specific embodiment
Concrete structure of the present utility model sees also accompanying drawing 2.This device is connected by lower connector 17 with drilling rod 16 by reaming wing drill bit, it is characterized in that drill bit 7 is connected by last connector 18 with reaming wing drill bit.
The concrete structure of described reaming wing drill bit sees also accompanying drawing 3.It is connected successively by drill bit guide sub 8, reaming wing body and drilling rod guide sub 19 3 parts, reaming wing 9,11 is hinged with hollow hinge 10,13 respectively, hollow hinge 10,13 is fixed on the reaming wing body, have air flue in reaming wing body and the drilling rod guide sub 19, the perforation mode of air flue is drilling rod air flue 15, hollow hinge and reaming wing air flue 12,14, and the three communicates successively.
Going up connector 17 during the utility model work is connected with drilling rod 16, carry fluid (liquid, gas or gas liquid mixture) by ground by drilling tool, this fluid is by the air flue 12,14 in air flue 15--- hollow hinge 10,13---the high strength reaming wing 9,11 of drilling rod guide sub 19 inside, the spouting generation thrust of nozzle from the reaming wing 9,11 at last, make high strength reaming wing 9,11, can deflect around hinge 10,13 respectively and lift, it is big that diameter becomes.
Guide sub 8 can connect drill bit 7, also can not connect, and has the guide function of setting upright after the connection.Rotation makes scraping tooth scraping broken formation under the drive of drilling tool, reaches the purpose that the cave is drawn in reaming.Reaming finishes, and stops to supply with fluid, high strength reaming wing 9,11, and sagging resetting finished reaming and drawn the cave operation.
If the hollow hinge adopts the three wings formula, be that then 120 degree are uniform.
Compare with injecting type reaming hole digging device, locally expanded double-vane reaming bit cloth cutter is reasonable, has increased guide function and has crept into the function that reaming is constructed simultaneously, can reaming in the rock stratum, draw the cave, more can in the coal seam, reaming draw the cave, and stability and safety more.
The utility model both can reaming in existing boring, also can realize boring and reaming after the bottom connects drill bit, draw the cave and carry out synchronously, improved efficiency of construction.
Claims (3)
1. locally expanded multi-wing expanding bit is connected by last connector (17) with drilling rod (16) by reaming wing drill bit, it is characterized in that drill bit (7) is connected by lower connector (18) with reaming wing drill bit.
2. locally expanded multi-wing expanding bit as claimed in claim 1 is characterized in that described reaming wing drill bit is connected successively by drill bit guide sub (8), reaming wing body and drilling rod guide sub (19) three parts; Reaming wing (9), (11) are hinged with hollow hinge (10), (13) respectively, and hollow hinge (10), (13) are fixed on the reaming wing body; Have air flue in reaming wing body and drilling rod guide sub (19), drilling rod air flue (15), hollow hinge air flue and reaming wing air flue (12), (14) communicate successively.
3. locally expanded multi-wing expanding bit as claimed in claim 2 is characterized in that described hollow hinge (10), (13) are fixedly on the reaming wing body and depart from guide way axle center symmetric arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201808766U CN201747278U (en) | 2010-05-06 | 2010-05-06 | Local radius-expanding multi-wing expanding drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201808766U CN201747278U (en) | 2010-05-06 | 2010-05-06 | Local radius-expanding multi-wing expanding drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747278U true CN201747278U (en) | 2011-02-16 |
Family
ID=43581961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201808766U Expired - Fee Related CN201747278U (en) | 2010-05-06 | 2010-05-06 | Local radius-expanding multi-wing expanding drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747278U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876236A (en) * | 2010-05-06 | 2010-11-03 | 彭桂湘 | Locally expanded multi-wing expanding bit |
| CN102155164A (en) * | 2011-02-24 | 2011-08-17 | 平顶山五环实业有限公司 | Thrust auxiliary reamer bit |
-
2010
- 2010-05-06 CN CN2010201808766U patent/CN201747278U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876236A (en) * | 2010-05-06 | 2010-11-03 | 彭桂湘 | Locally expanded multi-wing expanding bit |
| CN102155164A (en) * | 2011-02-24 | 2011-08-17 | 平顶山五环实业有限公司 | Thrust auxiliary reamer bit |
| CN102155164B (en) * | 2011-02-24 | 2013-06-05 | 平顶山五环实业有限公司 | Thrust auxiliary reamer bit |
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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: 20110216 Termination date: 20130506 |