CN202165032U - Double-helix protrusion-proof drill stem for hard deslagging surface - Google Patents
Double-helix protrusion-proof drill stem for hard deslagging surface Download PDFInfo
- Publication number
- CN202165032U CN202165032U CN2011202858061U CN201120285806U CN202165032U CN 202165032 U CN202165032 U CN 202165032U CN 2011202858061 U CN2011202858061 U CN 2011202858061U CN 201120285806 U CN201120285806 U CN 201120285806U CN 202165032 U CN202165032 U CN 202165032U
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- Prior art keywords
- deslagging
- hard
- bar
- double
- drill stem
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- Expired - Fee Related
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Abstract
The utility model discloses a double-helix protrusion-proof drill stem for a hard deslagging surface. The double-helix protrusion-proof drill stem for the hard deslagging surface comprises a base rod, wherein the base rod is helically provided with two protruding ribs; and the right surfaces of the protruding ribs are vertical to the surface of the base rod. The right surfaces vertical to the base rod are used as deslagging surfaces; the superficial area of the deslagging surfaces is increased, so the assisting thrust can be increased during deslagging; the assisting force for deslagging is increased by more than 30%; besides, the drilling depth can be increased effectively; the drilling efficiency is high; and the occurrence probability of construction accidents can be reduced.
Description
Technical field
The utility model relates to a kind of hard deslagging face double helix protrusion-dispelling drilling rod.
Background technology
In the coal mine gas comprehensive regulation;, gas emission big to coal seam hover ground stress is big and creep into the extraction drilling construction of difficulty; Prior art mainly adopts polished rod, three shuttle drilling rods, double helix to take off the traverse drill bar, helps the rib drilling rod of anti-bit freezing abrasion-proof drill rod of deslagging and winding steel etc., and all there is certain defective in above-mentioned each product: polished rod is easy to locking and plug-hole; Triangular drilling rod master is that section header can not adopt the friction weldering, and strength deficiency is prone to when reaching certain load twist off; It is on basic bar, to process helicla flute that double helix is taken off the traverse drill bar, has reduced pipe thickness, has reduced intensity, very easily fracture; Though helping the result of use of the rib drilling rod of anti-bit freezing abrasion-proof drill rod of deslagging and winding steel obviously improves; But there is a common problem; Promptly because processing technology restriction, all do not form the vertical row top of the slag at the deslagging face of direction of rotation, in creeping into tapping process; Discharging boosting power to boring mud reduces, and helps the deslagging effect not good enough.
The utility model content
The purpose of the utility model provides a kind of hard deslagging face double helix protrusion-dispelling drilling rod that deslagging function is strong, drilling efficiency is high and the drilling construction accident rate is low that self helps.
For realizing above-mentioned purpose, the technical scheme of the utility model is: hard deslagging face double helix protrusion-dispelling drilling rod, comprise basic bar, and spiral is provided with two fin bars on the said basic bar, and the right side of fin bar is perpendicular to basic bar.
Said two fin bars are parallel to each other.
Said basic bar one end is provided with protruding connector, and the other end is provided with the recessed connector that is complementary with protruding connector.
Compared with prior art, the beneficial effect of the utility model is:
1, the utility model spiral on basic bar is provided with two fin bars, and the right side of fin bar is perpendicular to basic bar, perpendicular to the right side of basic bar as the deslagging face; Owing to increased the surface area of deslagging face; Boosting power in the time of can improving deslagging helps deslagging ability to improve more than 30%, can effectively improve drilling depth simultaneously; Drilling efficiency is high, can reduce the construction accident probability of happening.
2, because two spiral prominence ribs utilize the cladding of plasma melting coating technique on basic bar, and fin bar and basic bar are metallurgical binding, adhesion is big; Difficult drop-off; Nickel-base alloy fin bar has the above hardness of 50 degree, and is shock-resistant strong with antiwear property, can effectively increase the service life.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the left view of Fig. 1.
The specific embodiment
Hard deslagging face double helix protrusion-dispelling drilling rod as depicted in figs. 1 and 2, it comprises basic bar 1, is provided with two fin bars 2 at basic bar 1 surperficial spiral; Article two, fin bar 2 is parallel to each other; And two the right side 21 of fin bar 2 is perpendicular to basic bar 1 surface, perpendicular to the right side 21 of basic bar 1 as the deslagging face, owing to increased the surface area of deslagging face; Boosting power in the time of can improving deslagging helps deslagging function strong.Be provided with protruding connector 3 at basic bar 1 one ends, the other end is provided with the recessed connector 4 that is complementary with protruding connector 3, and it is end to end to be convenient to drilling rod.
In this embodiment; Base bar 1 is common R780 material, and two fin bars 2 are nickel-base alloy, and process is: utilize the plasma melting coating technique; On basic bar 1, the Co-based alloy powder cladding is become two spiral prominence ribs 2; To be that 160mm, rib are wide be for 10-15mm, rib are high to adopt special grinding tool and cutter then by 5mm the spacing of fin bar 2, on lathe, the plane perpendicular with basic bar 1 is processed on the right side 21 of two fin bars 2.
Because fin bar 2 is metallurgical binding with basic bar 1, adhesion is big, and difficult drop-off, nickel-base alloy fin bar 2 have the above hardness of 50 degree, and be shock-resistant strong with antiwear property, can effectively increase the service life.
Claims (3)
1. hard deslagging face double helix protrusion-dispelling drilling rod comprises basic bar, it is characterized in that, spiral is provided with two fin bars on the said basic bar, and the right side of fin bar is perpendicular to basic bar surface.
2. hard deslagging face double helix protrusion-dispelling drilling rod as claimed in claim 1 is characterized in that said two fin bars are parallel to each other.
3. according to claim 1 or claim 2 hard deslagging face double helix protrusion-dispelling drilling rod is characterized in that said basic bar one end is provided with protruding connector, and the other end is provided with the recessed connector that is complementary with protruding connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202858061U CN202165032U (en) | 2011-08-08 | 2011-08-08 | Double-helix protrusion-proof drill stem for hard deslagging surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202858061U CN202165032U (en) | 2011-08-08 | 2011-08-08 | Double-helix protrusion-proof drill stem for hard deslagging surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165032U true CN202165032U (en) | 2012-03-14 |
Family
ID=45800867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202858061U Expired - Fee Related CN202165032U (en) | 2011-08-08 | 2011-08-08 | Double-helix protrusion-proof drill stem for hard deslagging surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165032U (en) |
-
2011
- 2011-08-08 CN CN2011202858061U patent/CN202165032U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20160808 |