CN1102867A - Impact rotating extrusion sealing drill bit and drilling method - Google Patents
Impact rotating extrusion sealing drill bit and drilling method Download PDFInfo
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- CN1102867A CN1102867A CN 94106341 CN94106341A CN1102867A CN 1102867 A CN1102867 A CN 1102867A CN 94106341 CN94106341 CN 94106341 CN 94106341 A CN94106341 A CN 94106341A CN 1102867 A CN1102867 A CN 1102867A
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- drill bit
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- extrusion sealing
- sealing drill
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Abstract
The said auger and auge boring method is mainly for locking construction of base engineering in the Tertiary Period Stratum. The said auger consists of through-type pneumatic hammer, conic bit, air return hole, central passage, relieving hole, spline, hard alloy, connecting screw, cylindrical surface, upper cone, inner cylindrical surface and clamping slot. Test shows high quality of formed holes with smooth wall. The boring process produces no earth which otherwise will pollute construction site and has no problem of collapsed wall.
Description
The present invention relates to a kind of mainly be carry out in the Quaternary system stratum that basic anchoring construction uses creep into facility and method.
At present, in the Quaternary system stratum, carry out in the Foundation Design anchoring construction, generally adopt auger, reverse circulation drilling, direct circulation is bored, Churn drill, these several drilling toolses all are by creeping into soil in the hole to be taken out pore-forming, leaving space is so that be lowered to anchor bar body and slip casting, in drilling process as run into backfill or soft layer, hole wall collapse very easily takes place, bring difficulty for slip casting and following anchor bar body, even do not cave in, because the soil in the hole takes out, the concrete body that can only lean on the cement of anchor bar body and injection to constitute fixes with the frictional force of soil layer, and the soil layer effect is very little to the extruding force of concrete body, and uplift resistance is not high, its shortcoming is that pore-forming efficiency is low, the not high and pollution job site of drilling quality.
The objective of the invention is to: a kind of compacted drilling method that adopts hollow-through air dth hammer to cooperate impact rotating extrusion sealing drill bit is provided, realizes the compacted pore-forming of impact rotating, hole wall is smooth, do not cave in, uplift resistance is strong, the drilling efficiency height, hole quality is good, and the job site is pollution-free.
The objective of the invention is by percussion bit being made into cone structure and adopting compacted drilling method to realize.
Technical scheme of the present invention comprises hollow-through air dth hammer, central passage, spline, carbide alloy, connecting thread, the face of cylinder, goes up the conical surface, inner cylinder face and draw-in groove, it is characterized in that:
(1), the impact rotating extrusion sealing drill bit front portion is cone, the top of cone is embedded with carbide alloy, to have along conical surface drift angle be the 3-5 bar carbide alloy band that 20 ° of-30 ° of equal angles distribute in scarfweld on the surface;
(2), return wind scoop in the cone, its bulk accounts for the 20-30% of cone volume;
(3), 6-9 diameter being arranged in the middle part of the impact rotating extrusion sealing drill bit is the air vent by the distribution of central angle equal angles of 6-8mm, be connected with trapezoidal connecting thread with the front portion, be connected with connecting thread with the rear portion, connect back inner cylinder face and rear portion and constitute annulus, become the exhaust passage of air vent.
What drilling method adopted is compacted hole forming method.
Accompanying drawing is the impact rotating extrusion sealing drill bit side cutaway view.
Described in detail below in conjunction with accompanying drawing.
For the ease of processing, three parts before, during and after drill bit is divided into, the top scarfweld carbide alloy 1 of the anterior cone 2 of drill bit, its drift angle is 22 °, carbide alloy band 6 is vertically to distribute along the taper seat equal angles, any two carbide alloy bands 6 equate with the drift angle that cone summit line is become, its role is to strengthen the intensity of cone 2.Return wind scoop 3 in cone 2, its space size accounts for 1/4th of cone 2 volumes.The front portion of drill bit is connected by trapezoidal connecting thread 4,7 with the middle part, and the face of cylinder 5 and the face of cylinder 12 constitute the external cylindrical surface of bit bodys, and the effect of the last conical surface 8 is to reduce the resistance that promotes drilling tool.It is the air vent 10 that 6-8mm distributes by equal angles that there is 6-9 diameter at the drill bit middle part.The middle part of drill bit is to be connected by connecting thread 11,13 with the rear portion, connects the face of cylinder 9, back and constitutes annulus with the rear portion, is the exhaust passage of air vent 10.
Draw-in groove 15 and spline 16 are bindiny mechanisms of bit body and through pneumatic down hole hammer, and the effect of anticreep step 17 is that to prevent that through pneumatic down hole hammer is connected with drill bit not firm.
When the present invention works, compressed air is sent into by drilling rod, drive through pneumatic down hole hammer work, piston impact hammering block in the down-the-hole hammer, ballistic work is passed to impact rotating extrusion sealing drill bit, the conical surface of drill bit cone 2 is with the soil layer in impact extruded the place ahead, and the soil layer in drill bit the place ahead constantly is extruded to around the hole wall, is similar to and nails.After finishing impact process, the gases at high pressure of driving down-the-hole hammer become waste gas, enter by the central passage on the hammering block 14 and to return wind scoop 3 in the cone 2, enter the air vent 10 at drill bit middle part along the edge that returns wind scoop 3, constitute the ring-type exhaust passage through inner cylinder face 9 and rear portion and discharge.
The present invention cooperates the disclosed through pneumatic down hole hammer of CN2048509U, carried out 3000 meters drilling tests, drilling footage is average 14.6 meters/hour in the lam stratum, drilling footage is average 30 meters/hour in clayey sand or backfill stratum, its result, hole quality is good, hole wall is smooth, closely knit, boring direction is good, is convenient to the insertion and the slip casting of anchor bar body, uplift resistance and the anchoring quality and the drilling efficiency of anchor pole have been improved, in drilling process, be not unearthed, do not pollute the job site, solved the hole wall collapse problem effectively.Facts have proved that the present invention compared with prior art has significant superiority.
Description of drawings:
The 1-carbide alloy; The 2-cone;
3-returns wind scoop; 4,7,11,13-connecting thread;
5, the 12-face of cylinder; 6-carbide alloy band;
The last conical surface of 8-; The 9-inner cylinder face;
The 10-air vent; The 14-central passage;
The 15-draw-in groove; The 16-spline;
17-anticreep step.
Claims (2)
1, circle round extrusion sealing drill bit and drilling method of a kind of impact comprises hollow-through air dth hammer, central passage, spline, carbide alloy, connecting thread, the face of cylinder, inner cylinder face and draw-in groove, it is characterized in that:
(1) front portion of impacting the extrusion sealing drill bit that circles round is cone (2), and it is the 3-5 bar carbide alloy band (6) of 20 ° of-30 ° of equal angles distributions that the top of cone (2) is embedded with on carbide alloy (1), the surface that scarfweld has along conical surface drift angle;
(2) return wind scoop (3) in the cone (2), its bulk accounts for the 20-30% of cone (2) volume;
(3) impact the middle part of the extrusion sealing drill bit that circles round, the heart angle, garden that 6-9 diameter arranged is 6-8mm is the air vent (10) that equal angles distributes, be connected with trapezoidal connecting thread (4), (7) with the front portion, be connected with connecting thread (11), (13) with the rear portion, connect garden cylinder (9) and rear portion formation annulus in the back, become the exhaust passage of air vent (10).
2, by claims 1 described impact circle round extrusion sealing drill bit and drilling method, it is characterized in that creeping into is compacted pore-forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94106341 CN1102867A (en) | 1994-06-13 | 1994-06-13 | Impact rotating extrusion sealing drill bit and drilling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94106341 CN1102867A (en) | 1994-06-13 | 1994-06-13 | Impact rotating extrusion sealing drill bit and drilling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1102867A true CN1102867A (en) | 1995-05-24 |
Family
ID=5032489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94106341 Pending CN1102867A (en) | 1994-06-13 | 1994-06-13 | Impact rotating extrusion sealing drill bit and drilling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1102867A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012106999A1 (en) * | 2011-02-11 | 2012-08-16 | Chan Leung Choi | Annulus ring hole drill |
| CN103556948A (en) * | 2013-11-12 | 2014-02-05 | 吉林大学 | Churn compaction drill bit |
| CN104196450A (en) * | 2014-08-25 | 2014-12-10 | 江苏长城石油装备制造有限公司 | Improved drilling tool for soft geological layer reinforcement |
| CN116241173A (en) * | 2023-05-09 | 2023-06-09 | 中铁第一勘察设计院集团有限公司 | Single power source impact rotary compaction drilling construction method and equipment |
-
1994
- 1994-06-13 CN CN 94106341 patent/CN1102867A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012106999A1 (en) * | 2011-02-11 | 2012-08-16 | Chan Leung Choi | Annulus ring hole drill |
| CN102971481A (en) * | 2011-02-11 | 2013-03-13 | 陈樑材 | Annulus ring hole drill |
| CN102971481B (en) * | 2011-02-11 | 2015-11-25 | 陈樑材 | Looping pit auger |
| US9322216B2 (en) | 2011-02-11 | 2016-04-26 | Top Mark Mechanical Equipment Limited | Annulus ring hole drill |
| CN103556948A (en) * | 2013-11-12 | 2014-02-05 | 吉林大学 | Churn compaction drill bit |
| CN103556948B (en) * | 2013-11-12 | 2015-12-09 | 吉林大学 | Churn compaction drill bit |
| CN104196450A (en) * | 2014-08-25 | 2014-12-10 | 江苏长城石油装备制造有限公司 | Improved drilling tool for soft geological layer reinforcement |
| CN116241173A (en) * | 2023-05-09 | 2023-06-09 | 中铁第一勘察设计院集团有限公司 | Single power source impact rotary compaction drilling construction method and equipment |
| CN116241173B (en) * | 2023-05-09 | 2023-08-11 | 中铁第一勘察设计院集团有限公司 | Single power source impact rotary compaction drilling construction method and equipment |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |