CN202194575U - Air down-the-hole hammer centering casing drill - Google Patents
Air down-the-hole hammer centering casing drill Download PDFInfo
- Publication number
- CN202194575U CN202194575U CN2011202474930U CN201120247493U CN202194575U CN 202194575 U CN202194575 U CN 202194575U CN 2011202474930 U CN2011202474930 U CN 2011202474930U CN 201120247493 U CN201120247493 U CN 201120247493U CN 202194575 U CN202194575 U CN 202194575U
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- CN
- China
- Prior art keywords
- guider
- composite drill
- plane
- hole
- drill bit
- 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.)
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Abstract
The utility model discloses an air down-the-hole hammer has been solved to the central drill pipe drilling tool, and it is uneven to have the drilling tool atress condition, and the transmission moment of torsion is unreliable, problem that drilling efficiency is low. The pilot (1) has two holes (9) parallel to the axis to cooperate with the first, the second compound shank (10) of the bit, the front of the first, the second compound shank forms the step by the first level, first inclined plane, second level and second inclined plane sequentially, the horizontal pin (2) passes the trough (11) of the pilot (1) and is opposite to level on the two shanks, the cambered surface of the two shanks cooperates with hole (9) slidably, the first, the second compound shank is the same in shape, the opposite fan-shaped of the direction, the opposite face of the two compound shanks cooperates slidably, the first, the second compound shank has chip-removing hole (17) to communicate the centre hole of the pilot (1).
Description
Technical field:
The utility model is relevant with drilling tool.
Background technology:
Existing down-the-hole is hammered eccentric casing drilling tool into shape and is comprised that guider, eccentric bit are first-class.The eccentric shaft of off-balance bit cooperates with eccentric orfice on the guider, is connected through pin.Off-balance bit is whole, is single-blade when being in open configuration, and drilling efficiency is low, and eccentric shaft is a single shaft, and with the misalignment of guider, stress condition is uneven, the poor reliability of transfer torque.
The utility model content:
It is high that the purpose of the utility model provides a kind of drill bit efficiency, stress balance, and the air latent drift of transfer torque good reliability is to heart casing drilling tool.
The utility model is achieved in that
The utility model air latent drift is to heart casing drilling tool; Guider 1 has two to cooperate with the hole 9 of the parallel axes handle 10 with first and second guiding reaming composite drill bit; The front of first and second composite drill bit constitutes step by first plane, first inclined-plane, second plane and second inclined-plane successively, and the groove 11 that lateral pin 2 passes guider 1 is relative with the plane on two handles, and the cambered surface of two handles and hole 9 are slidingly matched; First and second composite drill bit is that shape is identical; In the opposite direction fan-shaped, the opposite face of two composite drill bits is slidingly matched, and first and second composite drill bit has chip-removal hole 17 to be communicated with the centre bore of guider 1.
On composite drill bit and the plane that guider is connected plush copper 15 or shrinkage pool are arranged, shrinkage pool or plush copper are arranged on the guider 1, when two composite drill bits opened, guider axially glided, and plush copper on guider and the composite drill bit and shrinkage pool cooperate.
The positioning key 16 that the band cambered surface is arranged on the guider, when guider 1 axially glided, the cambered surface of positioning key 16 and the cambered surface of composite drill bit were coincide.
Guider has axial hole 12 to communicate with radial slot 11 on the guider, has perpendicular pin 6 to block the end face of lateral pin 2 in the hole 12, between perpendicular pin 6 and the plug 8 spring 7 is arranged.
The relative slide plane of two composite drill bits is positioned on the diameter of guider 1, and the symmetrical cambered surface of two composite drill bits constitutes the concentric circles that diameter is less than or equal to guider cross section circle when closed.
The utility model has been realized the high reliability of transfer torque with two or more transfer torque mechanisms.Two composite drill bits are worked simultaneously, self-locking mutually, and drilling efficiency is high, and the center during work overlaps with the center of guider, stress condition balance, long service life.
Description of drawings:
Fig. 1 is the utility model structure chart.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is the sectional view of the utility model.
Fig. 4 is that the A of Fig. 3 is to view.
Fig. 5 is B-B sectional view of Fig. 3.
Fig. 6 is E-E sectional view of Fig. 3.
Fig. 7 be the utility model sectional view two.
Fig. 8 is B-B sectional view of Fig. 7.
The specific embodiment:
The utility model comprises guider 1, lateral pin 2, fan type guiding reaming composite drill bit 3,5, perpendicular pin 6 etc.Two fan types guiding reaming composite drill bits are mutual self-locking structure in working order the time; Fan type guiding reaming composite drill bit had both played guiding and had crept into effect, also played the reaming effect, can get out the hole bigger than casing diameter; And increase with key plane transmission drilling tool moment of torsion; Lateral pin 2 at guider 1, fan type guiding reaming composite drill bit 3, play interconnect function between 5; Perpendicular pin 6 blocks lateral pin 2.The front of composite drill bit constitutes step by plane 20, inclined-plane 21, plane 22 and inclined-plane 23 successively.Plane 20, inclined-plane 21 play the pilot centering effect, and the reaming effect is played with inclined-plane 23 in plane 22, and handle 10 is cylindrical, with the cross section of lateral pin 2 junctions be fan-shaped, have boss 18 to cooperate transfer torque on the handle 10 with the groove walls in hole 9.Chip-removal hole 17 is communicated with the pilot centering face that is made up of plane 20, inclined-plane 21 of composite drill bits and the centre bore of guider 1, plays the landwaste of eliminating foot of hole.
During the utility model rounding state, the diameter of fan type guiding reaming composite drill bit is less than the internal diameter of sleeve pipe, and a whole set of drilling tool can free in and out in sleeve pipe.It is following to open, draw in the realization approach:
1, guider forward rotation; Fan type guiding reaming composite drill bit opens (like Fig. 4) on guider; Moment of torsion by composite drill bit in working order the time mutual self-locking structure and key plane transmit simultaneously, have this moment the plush copper 15 and the shrinkage pool of guider end face to match on the composite drill bit.During the guider backward rotation, fan type guiding reaming composite drill bit promptly draws in.
2, guider forward rotation; Fan type guiding reaming composite drill bit rotates earlier in the guider hole and is flared to maximum position and under the responsive to axial force of rig, realizes the location (like Fig. 6) of sliding; Moment of torsion by composite drill bit in working order the time mutual self-locking structure and key plane transmit simultaneously, positioning key 16 supports fan types guiding reaming composite drill bits simultaneously.Need when drawing reaming bit in to promote guider earlier, make composite drill bit break away from the positioner of guider, guider backward rotation then, fan type guiding reaming composite drill bit promptly draws in.
Claims (6)
1. the air latent drift is to heart casing drilling tool; It is characterized in that guider (1) has two to cooperate with the handle (10) of first and second composite drill bit with the hole (9) of parallel axes; The front of first and second composite drill bit constitutes step by first plane, first inclined-plane, second plane and second inclined-plane successively, and the groove (11) that lateral pin (2) passes guider (1) is relative with the plane on two handles, and the cambered surface of two handles and hole (9) are slidingly matched; First and second composite drill bit is that shape is identical; In the opposite direction fan-shaped, the opposite face of two composite drill bits is slidingly matched, and first and second composite drill bit has chip-removal hole (17) to be communicated with the centre bore of guider (1).
2. drilling tool according to claim 1 is characterized in that axial boss (18) is arranged on the handle (10), and hole (9) have the cross section is that fan-shaped groove (19) cooperates with boss (18).
3. drilling tool according to claim 1; It is characterized in that on composite drill bit and the plane that guider is connected plush copper (15) or shrinkage pool being arranged, guider has shrinkage pool or plush copper on (1), when two composite drill bits open; Guider axially glides, and plush copper on guider and the composite drill bit and shrinkage pool cooperate.
4. drilling tool according to claim 1 is characterized in that having on the guider positioning key (16) of band cambered surface, and when guider (1) when axially gliding, the cambered surface of positioning key (16) and the cambered surface of composite drill bit are identical.
5. drilling tool according to claim 1; It is characterized in that guider has axial hole (12) to communicate with radial slot (11) on the guider; There is perpendicular pin (6) to block the end face of lateral pin (2) in the hole (12), between perpendicular pin (6) and the plug (8) spring (7) arranged.
6. drilling tool according to claim 1 is characterized in that the relative slide plane of two composite drill bits is positioned on the diameter of guider (1), and the symmetrical cambered surface of two composite drill bits constitutes the concentric circles that diameter is less than or equal to guider cross section circle when closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202474930U CN202194575U (en) | 2011-07-14 | 2011-07-14 | Air down-the-hole hammer centering casing drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202474930U CN202194575U (en) | 2011-07-14 | 2011-07-14 | Air down-the-hole hammer centering casing drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202194575U true CN202194575U (en) | 2012-04-18 |
Family
ID=45949492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202474930U Expired - Fee Related CN202194575U (en) | 2011-07-14 | 2011-07-14 | Air down-the-hole hammer centering casing drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202194575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018781A (en) * | 2014-06-13 | 2014-09-03 | 武穴市金箭机械有限责任公司 | Symmetric double-eccentric block reamer bit |
| CN113062693A (en) * | 2021-04-14 | 2021-07-02 | 太原理工大学 | Device and method for extracting gas by penetrating complex stratum through pipe-following protective hole |
-
2011
- 2011-07-14 CN CN2011202474930U patent/CN202194575U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018781A (en) * | 2014-06-13 | 2014-09-03 | 武穴市金箭机械有限责任公司 | Symmetric double-eccentric block reamer bit |
| CN104018781B (en) * | 2014-06-13 | 2017-02-15 | 武穴市金箭机械有限责任公司 | Symmetric double-eccentric block reamer bit |
| CN113062693A (en) * | 2021-04-14 | 2021-07-02 | 太原理工大学 | Device and method for extracting gas by penetrating complex stratum through pipe-following protective hole |
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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: 20120418 Termination date: 20130714 |