CN201460714U - Eccentric drilling tool - Google Patents
Eccentric drilling tool Download PDFInfo
- Publication number
- CN201460714U CN201460714U CN2009200815030U CN200920081503U CN201460714U CN 201460714 U CN201460714 U CN 201460714U CN 2009200815030 U CN2009200815030 U CN 2009200815030U CN 200920081503 U CN200920081503 U CN 200920081503U CN 201460714 U CN201460714 U CN 201460714U
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- pin
- eccentric
- hole
- guider
- drill bit
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Abstract
The utility model discloses an eccentric drilling tool, which comprises a correcting device. The correcting device is connected with an impactor and is provided with at least two shaft pin holes in the axial direction, a bottom drill bit and at least two eccentric reamers are arranged in the shaft pin holes of the correcting device through shaft pins, the eccentric reamers are arranged between the correcting device and the bottom drill bit, a first through pin hole is arranged in the radial directions of the bottom drill bit and the correcting device, each shaft pin is provided with a second through pin hole at the position corresponding to the position of the first through pin hole, and a through pin penetrates through the first through pin hole of the bottom drill bit and the correcting device and extends into the second through pin hole. The utility model adopts the simultaneous breaking process from different directions, bears the force uniformly, reduces the impact of mechanical resistance, drains the slag smoothly, and has good centering performance for circular breaking, thereby quickening the follow-up speed of the drill rod and the sleeve of a drilling machine. Simultaneously, the reamers can automatically transfer the torque moment under the open state, and the multi-shaft suspension connecting structure is used, thereby solving the hidden problem that the single eccentric reamer can fall off.
Description
Technical field
The utility model relates to dark, the broken counterbore construction of shallow bore hole of correlation engineering such as mine, water conservancy, highway, railway, prospecting, water power, be applicable to rigs such as rock core spindle drill, jumbolter, be used for geological mapping and get fields such as the pre-supporting of core, hazard management, deep foundation ditch, the anchoring of high slope accumulation horizon, Tunnel Landslide pipe shed support, influent well, boulder bed high-pressure rotary-spray, basement, exactly relate to a kind of eccentric casing drilling tool.
Background technology
Existing eccentric casing drilling tool, mainly contain two kinds of two-piece-dress and three-pieces, the Two Piece Set drilling tool mainly is made of the guider of multidiameter shape and the off-balance bit that is installed on the guider with attachment pegs, because bearing, attachment pegs transmits whole moments of torsion in drilling process, and attachment pegs places the cylinder position of the pin-and-hole and the guider of off-balance bit, there is the gap in three's matching part, in drilling process, be easy to wear and tear even rub, cause drill bit to drop, drilling tool failure, in addition, owing to there is not the center bit guide-localization, boring is easily oblique, and therefore, the eccentric casing drilling tool technology of two-piece-dress has been on the verge of to eliminate the edge.
Three-piece drilling tool is mainly by the guider of multidiameter shape, and with center-pole and the center bit that the centre bore of guider is threaded, the eccentric reaming drill bit that is sleeved on the center-pole of center bit constitutes.The center bit of this structure and the screw thread pair between the guider are born the whole moment of torsion that transmits center bit and eccentric reaming drill bit, to the Materials And Process Requirement height, make difficulty.In addition,, need often counter-rotating, discharge the rock slag, in case bury drills because drill bit in the course of the work.Therefore, be threaded when having the drilling tool counter-rotating and free, and the hidden danger that causes drill bit to drop; Simultaneously, in the prior art, adopt single eccentric reaming, such drilling tool transfer torque poor-performing, it is unreliable to connect, have hidden danger such as drill bit drops, the folk prescription crushing performance of single eccentric reaming is relatively poor, discontinuity, the mechanical performance resistance of impact is increased, cause the drilling tool wearing and tearing very fast, efficiency of construction is low, so cost is higher.
The utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of rock core spindle drill that is applicable to, rigs such as jumbolter, be used for geological mapping and get core, hazard management, deep foundation ditch, the anchoring of high slope accumulation horizon, the Tunnel Landslide pipe shed support, the pre-supporting of influent well, the boulder bed high-pressure rotary-spray, the eccentric casing drilling tool in fields such as basement, the utility model adopts broken simultaneously in many ways, stressed even, reduce the impulse machine resistance, deslagging is unimpeded, circumference is broken feels relieved, make the drilling rod of rig, the sleeve pipe follow-up speeds up, while reamer open mode is transfer torque voluntarily, adopts multiaxis to hang conjoined structure, has solved the hidden danger that single eccentric reaming device drops.
The utility model is achieved through the following technical solutions:
A kind of eccentric casing drilling tool, comprise the guider that is connected with impactor, it is characterized in that: described guider axially on have at least two pin holes that are evenly distributed on the guider central periphery, pin hole and guider center be arranged in parallel, bottom drill bit and at least two eccentric reaming devices are all in pivot pin is allocated pin hole on the described guider into, the eccentric reaming device is between described guider and bottom drill bit, radial direction at described bottom drill bit and guider has first pinned hole, be positioned at the pairing position of first pinned hole on each pivot pin and have second pinned hole, wear in first pinned hole that pin penetrates described bottom drill bit and guider and stretch to described second pinned hole and make described pivot pin guider, eccentric reaming device and bottom drill bit fuse.
Be provided with the expansion pin with the first pinned hole interference fit in described first pinned hole, wear pin and expansion pin and penetrate successively in described first pinned hole, wear the pin and the first pinned hole matched in clearance.
Described pin hole is three, and the eccentric reaming device that mates with pin hole also is three, has two second pinned holes up and down on each pivot pin, matches with first pinned hole respectively.
Described pin hole is two, and the eccentric reaming device that mates with pin hole also is two, has two second pinned holes up and down on each pivot pin, matches with first pinned hole respectively.
Described pin hole is four, and the eccentric reaming device that mates with pin hole also is four, has two second pinned holes up and down on each pivot pin, matches with first pinned hole respectively.
Described a plurality of eccentric reaming device closes up full circle cylinder of formation after opposite spin, open the self-locking shape that forms mutual transfer torque after the positive direction rotation, a plurality of eccentric reaming devices after opening rotatablely move the diameter of the circumference that forms greater than the diameter of described guider and bottom drill bit through positive direction.
Described eccentric reaming device and described pivot pin matched in clearance.
Described eccentric reaming device is provided with carbide alloy with the bottom drill bit with the outside face that contacts.
The center of described guider has pore, and pin hole is opened in the peripheral of described pore and be arranged in parallel with described pore.
Advantage of the present utility model shows:
1, since the utility model adopt " on guider, have at least two pin holes; bottom drill bit and at least two eccentric reaming devices are all in pivot pin is allocated pin hole on the described guider into; the eccentric reaming device is between described guider and bottom drill bit; wear pin penetrate bottom in first pinned hole of drill bit and guider and stretch to second pinned hole and make pivot pin with guider; eccentric reaming device and bottom drill bit fuse " such technical scheme compared with prior art, adopt at least two eccentric reaming devices from both direction is broken simultaneously at least, stressed even, reduce the impulse machine resistance, deslagging is unimpeded, circumference is broken feels relieved, make the drilling rod of rig, the sleeve pipe follow-up speeds up, while reamer open mode is transfer torque voluntarily, adopt a plurality of pivot pins to hang and make guider, the structure that eccentric reaming device and bottom drill bit fuse, solved the problem that existing single eccentric reaming device drops easily, the construction of competitive list eccentric drilling device, effect improves more than 80%, and cost reduces more than 60%.
2, because the utility model adopts " being provided with the expansion pin with the first pinned hole interference fit in first pinned hole; wear pin and expansion pin and penetrate successively in described first pinned hole; wear the pin and the first pinned hole matched in clearance " such technical scheme, compared with prior art, wearing pin penetrates first pinned hole and second pinned hole pivot pin is hung, expansion pin penetrates in first pinned hole again, even violent for a long time shake when drilling tool moves, expansion pin is come off, guaranteed guider, the fixing that is connected of eccentric reaming device and bottom drill bit, thereby the technical problem of thoroughly avoiding eccentric reaming device and drill bit to drop easily.
3, because the utility model adopts " three pivot pins and three eccentric reaming devices " broken simultaneously from three directions, stressed even, firmly, power increases substantially, and reduces the impulse machine resistance, deslagging is unimpeded, circumference is broken feels relieved, and the drilling rod of rig, sleeve pipe follow-up are speeded up, and the drilling tool wearing and tearing are slow, the efficiency of construction height, so cost reduces.While reamer open mode is transfer torque voluntarily, adopts three pivot pins to hang the structure that guider, eccentric reaming device and bottom drill bit are fused, and has solved the problem that existing single eccentric reaming device drops easily.
4, because the utility model is provided with carbide alloy with the bottom drill bit with the outside face that contacts at the eccentric reaming device, can reduce the wearing and tearing of bottom drill bit and eccentric reaming device, prolong the application life of drilling tool.
Description of drawings
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:
Fig. 1 is eccentric casing drilling tool, and the structural representation of eccentric reaming device after opening
Fig. 2 is not for being provided with the bottom drill bit structure schematic diagram of carbide alloy
Fig. 3 is the bottom drill bit structure schematic diagram that has carbide alloy
Fig. 4 is the structural representation of eccentric reaming device
Fig. 5 is the structural representation of pivot pin
Fig. 6 is the structural representation of guider
Mark among the figure:
1, guider, 2, pin hole, 3, the bottom drill bit, 4, the eccentric reaming device, 5, pivot pin, 11, first pinned hole, 6, second pinned hole, 7, wear pin, 8, expansion pin, 9, carbide alloy, 10, pore.
The specific embodiment
Embodiment 1
With reference to Figure of description, the utility model discloses a kind of eccentric casing drilling tool, comprise the guider 1 that is connected with impactor, described guider 1 axially on have at least two pin holes 2 that are evenly distributed on guider 1 central periphery, pin hole 2 be arranged in parallel with guider 1 center, bottom drill bit 3 and at least two eccentric reaming devices 4 are all in pivot pin 5 is allocated pin hole 2 on the described guider 1 into, eccentric reaming device 4 is between described guider 1 and bottom drill bit 3, radial direction at described bottom drill bit 3 and guider 1 has first pinned hole 11, be positioned at first pinned hole, 11 pairing positions on each pivot pin 5 and have second pinned hole 6, wear in first pinned hole 11 that pin 7 penetrates described bottom drill bit 3 and guider 1 and stretch to described second pinned hole 6 and make described pivot pin 5 guider 1, eccentric reaming device 4 and bottom drill bit 3 fuse.
On the basis of embodiment 1, the utility model one better embodiment is the expansion pin 8 that is provided with in first pinned hole 11 with first pinned hole, 11 interference fit, wear pin 7 and expansion pin 8 and penetrate successively in described first pinned hole 11, wear pin 7 and first pinned hole, 11 matched in clearance.
Embodiment 3
On the basis of the foregoing description, a preferred forms of the present utility model is that pin hole 2 is three, and the eccentric reaming device 4 that mates with pin hole 2 also is three, has two second pinned holes 6 up and down on each pivot pin 5, matches with first pinned hole 11 respectively.Described a plurality of eccentric reaming device 4 closes up full circle cylinder of formation after opposite spin, open the self-locking shape that forms mutual transfer torque after the positive direction rotation, a plurality of eccentric reaming devices 4 after opening rotatablely move the diameter of the circumference that forms greater than the diameter of described guider 1 and bottom drill bit 3 through positive direction.Described eccentric reaming device 4 and described pivot pin 5 matched in clearance.Described eccentric reaming device 4 is provided with carbide alloy 9 with bottom drill bit 3 with the outside face that contacts.The center of described guider 1 has pore 10, and pin hole 2 is opened in the peripheral of described pore 10 and be arranged in parallel with described pore 10.
Certainly, pin hole 2 also can be two or four, and the eccentric reaming device 4 that mates with pin hole 2 also is two or four, has two second pinned holes 6 up and down on each pivot pin 5, matches with first pinned hole 11 respectively.
The utility model is not limited to the foregoing description, and according to the description of the foregoing description, those of ordinary skill in the art also can make some conspicuous changes, but these changes all should fall within the protection domain of the utility model claim.
Claims (9)
1. eccentric casing drilling tool, comprise the guider (1) that is connected with impactor, it is characterized in that: described guider (1) axially on have at least two pin holes (2) that are evenly distributed on guider (1) central periphery, pin hole (2) be arranged in parallel with guider (1) center, bottom drill bit (3) and at least two eccentric reaming devices (4) are all in pivot pin (5) is allocated pin hole (2) on the described guider (1) into, eccentric reaming device (4) is positioned between described guider (1) and the bottom drill bit (3), radial direction at described bottom drill bit (3) and guider (1) has first pinned hole (11), be positioned at the pairing position of first pinned hole (11) on each pivot pin (5) and have second pinned hole (6), wear in first pinned hole (11) that pin (7) penetrates described bottom drill bit (3) and guider (1) and stretch to described second pinned hole (6) and make described pivot pin (5) guider (1), eccentric reaming device (4) and bottom drill bit (3) fuse.
2. eccentric casing drilling tool according to claim 1, it is characterized in that: be provided with expansion pin (8) in described first pinned hole (11) with first pinned hole (11) interference fit, wear pin (7) and expansion pin (8) penetrates in described first pinned hole (11) successively, wear pin (7) and first pinned hole (11) matched in clearance.
3. eccentric casing drilling tool according to claim 1 and 2, it is characterized in that: described pin hole (2) is three, also be three with the eccentric reaming device (4) of pin hole (2) coupling, have two second pinned holes (6) up and down on each pivot pin (5), match with first pinned hole (11) respectively.
4. eccentric casing drilling tool according to claim 1 and 2, it is characterized in that: described pin hole (2) is two, also be two with the eccentric reaming device (4) of pin hole (2) coupling, have two second pinned holes (6) up and down on each pivot pin (5), match with first pinned hole (11) respectively.
5. eccentric casing drilling tool according to claim 1 and 2, it is characterized in that: described pin hole (2) is four, also be four with the eccentric reaming device (4) of pin hole (2) coupling, have two second pinned holes (6) up and down on each pivot pin (5), match with first pinned hole (11) respectively.
6. eccentric casing drilling tool according to claim 3, it is characterized in that: described a plurality of eccentric reaming devices (4) close up full circle cylinder of formation after opposite spin, open the self-locking shape that forms mutual transfer torque after the positive direction rotation, a plurality of eccentric reaming devices (4) after opening rotatablely move the diameter of the circumference that forms greater than the diameter of described guider (1) and bottom drill bit (3) through positive direction.
7. eccentric casing drilling tool according to claim 1 and 2 is characterized in that: described eccentric reaming device (4) and described pivot pin (5) matched in clearance.
8. eccentric casing drilling tool according to claim 1 and 2 is characterized in that: described eccentric reaming device (4) is provided with carbide alloy (9) with bottom drill bit (3) with the outside face that contacts.
9. eccentric casing drilling tool according to claim 1 is characterized in that: the center of described guider (1) has pore (10), and pin hole (2) is opened in the peripheral of described pore (10) and be arranged in parallel with described pore (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200815030U CN201460714U (en) | 2009-06-05 | 2009-06-05 | Eccentric drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200815030U CN201460714U (en) | 2009-06-05 | 2009-06-05 | Eccentric drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201460714U true CN201460714U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200815030U Expired - Fee Related CN201460714U (en) | 2009-06-05 | 2009-06-05 | Eccentric drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201460714U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790519A (en) * | 2014-02-17 | 2014-05-14 | 广汉市井管厂 | Centrifugal flail block casing drilling tool and assembly method thereof |
| CN104763348A (en) * | 2015-03-05 | 2015-07-08 | 成都理工大学 | Embedded bionic nozzle type drilling and expanding integral drilling tool and drilling and hole expandin method thereof |
| CN106639914A (en) * | 2016-12-08 | 2017-05-10 | 长沙黑金刚实业有限公司 | Eccentric casing drilling tool |
| CN107165579A (en) * | 2017-05-22 | 2017-09-15 | 长江大学 | Soil compaction type is with pipe off-balance bit |
| CN110130832A (en) * | 2019-06-11 | 2019-08-16 | 广汉珂普瑞科技有限公司 | A kind of centrifugal casing drilling tool and its manufacturing method |
| CN110439468A (en) * | 2019-09-05 | 2019-11-12 | 武穴市金锐精密锻造有限公司 | A kind of spin-block formula down-the-hole is with pipe bit |
-
2009
- 2009-06-05 CN CN2009200815030U patent/CN201460714U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790519A (en) * | 2014-02-17 | 2014-05-14 | 广汉市井管厂 | Centrifugal flail block casing drilling tool and assembly method thereof |
| CN103790519B (en) * | 2014-02-17 | 2015-12-30 | 广汉市井管厂 | A kind of centrifugal block for clutch use casing drilling tool and assembly method thereof |
| CN104763348A (en) * | 2015-03-05 | 2015-07-08 | 成都理工大学 | Embedded bionic nozzle type drilling and expanding integral drilling tool and drilling and hole expandin method thereof |
| CN106639914A (en) * | 2016-12-08 | 2017-05-10 | 长沙黑金刚实业有限公司 | Eccentric casing drilling tool |
| CN107165579A (en) * | 2017-05-22 | 2017-09-15 | 长江大学 | Soil compaction type is with pipe off-balance bit |
| CN110130832A (en) * | 2019-06-11 | 2019-08-16 | 广汉珂普瑞科技有限公司 | A kind of centrifugal casing drilling tool and its manufacturing method |
| CN110439468A (en) * | 2019-09-05 | 2019-11-12 | 武穴市金锐精密锻造有限公司 | A kind of spin-block formula down-the-hole is with pipe 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: 20100512 Termination date: 20150605 |
|
| EXPY | Termination of patent right or utility model |