CN102155166A - Radial spinning drill - Google Patents
Radial spinning drill Download PDFInfo
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- CN102155166A CN102155166A CN2011100968470A CN201110096847A CN102155166A CN 102155166 A CN102155166 A CN 102155166A CN 2011100968470 A CN2011100968470 A CN 2011100968470A CN 201110096847 A CN201110096847 A CN 201110096847A CN 102155166 A CN102155166 A CN 102155166A
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Abstract
The invention relates to a radial spinning drill. Spherical teeth are inlaid and welded at the front end of a central shaft; helical blades are welded on the central shaft; the helical blades and the central shaft jointly form a spiral section; the central shaft is connected with a radial spinning section which is in threaded connection with a gauge protection section; the axis of the spiral section is collinear with the axis of gauge protection section; and the end part of the gauge protection section is connected with a drill stem or a down-the-hole hammer by the threads. The radial spinning drill overcomes the defect that a conical dense-squeezing drill causes a soil mass to produce a big axial displacement, and solves the difficult problem that the drilling rate becomes slower and slower as the soil mass is squeezed below the drill; the radial spinning section comprises a plurality of sections of disc cams; during drilling, the soil mass is spun along with the change of the radius direction of the cams and is pushed toward the periphery of the hole wall so as to be beneficial to the radial plastic flow of the soil mass and avoid the formation of a dense area before the conical drill. The radial spinning drill substantially increases the speed of extrusion drilling and simultaneously reinforces the hole wall while improving the drilling depth. Recesses among the cams lead the moisture among soil particles to release so as to play a role in drill lubrication and frictional resistance reduction.
Description
Technical field:
The present invention relates to a kind of extruding and creep into and use drill bit, be particularly useful for the drill bit that the spinning of the spiral of soil layer compact making hole-radially creeps into.
Background technology:
In recent years and since the extruding drilling technology in drilling process, have not casting, rotating hours long, be beneficial to and reinforce hole wall and environmental protection, advantage such as energy-conservation, obtained extensive use in fields such as ground anchorage, non-excavation pipe installation and basic engineering constructions.The extruding drilling technology adopts conical drill bit usually, and the stress that drill bit acts on the soil body evenly distributes along taper seat, and direction is perpendicular to taper seat.Therefore, except producing the soil body is pressed to the hole wall horizontal component on every side, also produce downward vertical component, the soil body of chisel edge is moved downward, the soil body is compressed and is compacted gradually, and hardness is increasing.Along with the increase of depth of stratum, the soil body volume of drill bit bottom hardening constantly increases, and penetration rate is more and more slower, until final drilling depth not.Though the moment of torsion of engineering driller is bigger, moment of torsion only plays and overcomes the soil body to the frictional force of drilling tool with guarantee the effect of boring direction, directly is not used for fragmentation and extrusion soil.Therefore, less to the radial compression effect of the soil body, cause extruding to be crept into and can only be used for the construction of superficial part stratum.
Summary of the invention:
Purpose of the present invention just is to provide a kind of radially spinning drill bit that can directly the soil body be pressed to hole wall week side at above-mentioned the deficiencies in the prior art.
The objective of the invention is to be achieved through the following technical solutions:
Spinning drill bit radially, be by the front end of ball tooth 1 welding-on at central axis 2, helical blade 3 is welded on the central axis 2, and with the common spiral sections 4 of forming of central axis 2, central axis 2 is connected with spinning section 5 radially by welding, spline or screw thread, radially spinning section 5 is threaded or welds with protecting footpath section 6, spiral section 4 axis with protect footpath section 6 axis conllinear, the end of protecting footpath section 6 is hammered into shape with drilling rod or down-the-hole by screw thread and is connected and composed.
Radially spinning section 5 be by more than one so that N the different cam of base circle diameter (BCD) constitute by screw thread or welding.
Every grade long 5-100cm of described cam, every grade of cam face is stepped, and the relative adjacent cams base circle diameter (BCD) of every grade of cam base circle diameter increases or dwindles 5-30cm, and every grade of cam maximum radial place angle staggers 60 °-120 °, and every grade of suffered moment of flexure of cam keeps balance.
The pitch of helical blade 3 is 5-100cm.
Beneficial effect: the present invention has overcome existing conical extrusion sealing drill bit makes the soil body produce the defective of axially big displacement, solve conical extrusion sealing drill bit the soil body is pressed to the drill bit below, causes the more and more slower technical barrier of rate of penetration, adopted spiral-radially spinning and design of guarantor footpath.The drill bit front portion is designed to spiral and creeps into, at the pressure of the drill and gyroscopic action incision underground layer and the soil body is risen to along helical blade in the gap that radially spinning section and hole wall form.Radially the spinning section is made up of the plurality of sections disk cam, and the variation soil body along with the cam radius vector when creeping into is equivalent to be subjected to the spinning effect, is pushed to around the hole wall by cam, help the soil body radially plasticity flow, avoid the formation of circular cone drill bit the place ahead compact zone.Increase substantially the extruding rate of penetration, help improving the extruding drilling depth and better reinforce hole wall simultaneously.Recess between cam has certain space, and the moisture between soil particle is discharged, and plays lubricated drill bit and the effect that reduces frictional resistance.
Description of drawings:
Fig. 1 is spinning drill bit front view radially;
Fig. 2 is accompanying drawing 1 a middle section A-A sectional view:
1 ball tooth, 2 central axiss, 3 helical blades, 4 spiral sections, 5 spinning sections radially, 6 protect the footpath section.
1., 2., 3. ... 5. ... the N cam
The specific embodiment:
Be described in further detail below in conjunction with drawings and Examples:
Spinning drill bit radially, be by the front end of ball tooth 1 welding-on at central axis 2, helical blade 3 is welded on the central axis 2, and with the common spiral sections 4 of forming of central axis 2, central axis 2 is connected with spinning section 5 radially by welding, spline or screw thread, radially spinning section 5 is threaded or welds with protecting footpath section 6, spiral section 4 axis with protect footpath section 6 axis conllinear, the end of protecting footpath section 6 is hammered into shape with drilling rod or down-the-hole by screw thread and is connected and composed.
Radially spinning section 5 be by more than one so that N the different cam of base circle diameter (BCD) constitute by screw thread or welding.Every grade of axial dimension 5-100cm of cam, every grade of cam face is stepped, the relative adjacent cams base circle diameter (BCD) of every grade of cam base circle diameter increases or dwindles 5-30cm, and every grade of cam maximum radial place angle staggers 60 °-120 °, and every grade of suffered moment of flexure of cam keeps balance.The pitch of helical blade 3 is 5-100cm.
When creeping into, drill bit incision soil layer under the pressure of the drill and gyroscopic action, the soil body rises in the gap of radially spinning section and hole wall formation along helical blade.Under the effect of cam spinning, the soil body is pressed against around the hole wall, and the soil body produces radially plasticity and flows, and avoids the formation of circular cone drill bit the place ahead compact zone.
Spinning drill bit radially, be by the front end of ball tooth 1 welding-on at central axis 2, helical blade 3 is welded on the central axis 2, and with the common spiral sections 4 of forming of central axis 2, central axis 2 is connected with spinning section 5 radially by welding, spline or screw thread, radially spinning section 5 is threaded or welds with protecting footpath section 6, spiral section 4 axis with protect footpath section 6 axis conllinear, the end of protecting footpath section 6 is hammered into shape with drilling rod or down-the-hole by screw thread and is connected and composed.
Radially spinning section 5 is to be made of by screw thread or welding 5 different cams of base circle diameter (BCD).Every grade of axial dimension 80cm of cam, every grade of cam face is stepped, and the relative adjacent cams base circle diameter (BCD) of every grade of cam base circle diameter increases or dwindles 5-15cm, and every grade of cam maximum radial place angle staggers 120 °, and every grade of suffered moment of flexure of cam keeps balance.The pitch of helical blade 3 is 100cm.
The quantity of helical blade 3, pitch can be regulated as required, and radially spinning section 5 is made up of several different cams of base circle diameter (BCD), and as shown in Figure 1, every grade of cam face can stepped or even transition.The center line of helical blade 3 and guarantor footpath section 6 central lines are to guarantee effective transmission of the pressure of the drill.
Embodiment 2
Spinning drill bit radially, be by the front end of ball tooth 1 welding-on at central axis 2, helical blade 3 is welded on the central axis 2, and with the common spiral sections 4 of forming of central axis 2, central axis 2 is connected with spinning section 5 radially by welding, spline or screw thread, radially spinning section 5 is threaded or welds with protecting footpath section 6, spiral section 4 axis with protect footpath section 6 axis conllinear, the end of protecting footpath section 6 is hammered into shape with drilling rod or down-the-hole by screw thread and is connected and composed.
Radially spinning section 5 is to be made of by screw thread or welding 8 different cams of base circle diameter (BCD).Every grade of axial dimension 30cm of cam, every grade of cam face is stepped, and the relative adjacent cams base circle diameter (BCD) of every grade of cam base circle diameter increases or dwindles 5-21cm, and every grade of cam maximum radial place angle staggers 90 °, and every grade of suffered moment of flexure of cam keeps balance.The pitch of helical blade 3 is 80cm.
The quantity of helical blade 3, pitch can be regulated as required, and radially spinning section 5 is made up of several different cams of base circle diameter (BCD), and as shown in Figure 1, every grade of cam face can stepped or even transition.The center line of helical blade 3 and guarantor footpath section 6 central lines are to guarantee effective transmission of the pressure of the drill.
Embodiment 3
Spinning drill bit radially, be by the front end of ball tooth 1 welding-on at central axis 2, helical blade 3 is welded on the central axis 2, and with the common spiral sections 4 of forming of central axis 2, central axis 2 is connected with spinning section 5 radially by welding, spline or screw thread, radially spinning section 5 is threaded or welds with protecting footpath section 6, spiral section 4 axis with protect footpath section 6 axis conllinear, the end of protecting footpath section 6 is hammered into shape with drilling rod or down-the-hole by screw thread and is connected and composed.
Radially spinning section 5 is to be made of by screw thread or welding 10 different cams of base circle diameter (BCD).Every grade of axial dimension 25cm of cam, every grade of cam face is stepped, and the relative adjacent cams base circle diameter (BCD) of every grade of cam base circle diameter increases or dwindles 5-25cm, and every grade of cam maximum radial place angle staggers 60 °, and every grade of suffered moment of flexure of cam keeps balance.The pitch of helical blade 3 is 60cm.
The quantity of helical blade 3, pitch can be regulated as required, and radially spinning section 5 is made up of several different cams of base circle diameter (BCD), and as shown in Figure 1, every grade of cam face can stepped or even transition.The center line of helical blade 3 and guarantor footpath section 6 central lines are to guarantee effective transmission of the pressure of the drill.
Claims (4)
1. spinning drill bit radially, it is characterized in that, be by the front end of ball tooth (1) welding-on in central axis (2), helical blade (3) is welded on the central axis (2), and form spiral section (4) jointly with central axis (2), central axis (2) is connected with spinning section (5) radially by welding, spline or screw thread, radially section (6) is threaded or welds spinning section (5) with protecting directly, spiral section (4) axis with protect footpath section (6) axis conllinear, the end of protecting footpath section (6) is hammered into shape with drilling rod or down-the-hole by screw thread and is connected and composed.
2. according to the described radially spinning of claim 1 drill bit, it is characterized in that, radially spinning section (5) be by more than one so that N the different cam of base circle diameter (BCD) constitute by screw thread or welding.
3. according to the described radially spinning of claim 2 drill bit, it is characterized in that, every grade of axial dimension 5-100cm of described cam, every grade of cam face is stepped, the relative adjacent cams base circle diameter (BCD) of every grade of cam base circle diameter increases or dwindles 5-30cm, every grade of cam maximum radial place angle staggers 60 °-120 °, and every grade of suffered moment of flexure of cam keeps balance.
4. according to the described radially spinning of claim 1 drill bit, it is characterized in that the pitch of helical blade (3) is 5-100cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100968470A CN102155166A (en) | 2011-04-19 | 2011-04-19 | Radial spinning drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100968470A CN102155166A (en) | 2011-04-19 | 2011-04-19 | Radial spinning drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102155166A true CN102155166A (en) | 2011-08-17 |
Family
ID=44436813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100968470A Pending CN102155166A (en) | 2011-04-19 | 2011-04-19 | Radial spinning drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102155166A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112077322A (en) * | 2020-08-27 | 2020-12-15 | 燕山大学 | Device for spinning semi-solid metal powder to form bimetal composite pipe on outer wall of steel pipe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2506383A1 (en) * | 1981-05-20 | 1982-11-26 | Dn Inzh Str Inst | TOOL FOR PROBING COMPRESSIBLE MACROPOROUS SOILS AND METHOD OF PROBE USING THE SAME |
| SU1442627A1 (en) * | 1986-10-24 | 1988-12-07 | В. Л. Гой | Apparatus for drilling square holes |
| JPH0586791A (en) * | 1991-08-05 | 1993-04-06 | Makoto Takahashi | No muck discharge type device for driving foundation pile and no muck discharge type for driving foundation pile |
| CN2166156Y (en) * | 1993-05-18 | 1994-05-25 | 冶金工业部建筑研究总院 | Borehole plie driving drill set |
| CN1208117A (en) * | 1998-09-02 | 1999-02-17 | 王培林 | Geological cutting drill bit |
| US20040173385A1 (en) * | 2003-03-08 | 2004-09-09 | Ivan Carta | Drilling and anchoring device for diverse applications |
| CN201650119U (en) * | 2010-05-20 | 2010-11-24 | 中冶建筑研究总院有限公司 | Soil squeezing amount-adjustable bidirectional spiral squeezing and expanding bit |
-
2011
- 2011-04-19 CN CN2011100968470A patent/CN102155166A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2506383A1 (en) * | 1981-05-20 | 1982-11-26 | Dn Inzh Str Inst | TOOL FOR PROBING COMPRESSIBLE MACROPOROUS SOILS AND METHOD OF PROBE USING THE SAME |
| SU1442627A1 (en) * | 1986-10-24 | 1988-12-07 | В. Л. Гой | Apparatus for drilling square holes |
| JPH0586791A (en) * | 1991-08-05 | 1993-04-06 | Makoto Takahashi | No muck discharge type device for driving foundation pile and no muck discharge type for driving foundation pile |
| CN2166156Y (en) * | 1993-05-18 | 1994-05-25 | 冶金工业部建筑研究总院 | Borehole plie driving drill set |
| CN1208117A (en) * | 1998-09-02 | 1999-02-17 | 王培林 | Geological cutting drill bit |
| US20040173385A1 (en) * | 2003-03-08 | 2004-09-09 | Ivan Carta | Drilling and anchoring device for diverse applications |
| CN201650119U (en) * | 2010-05-20 | 2010-11-24 | 中冶建筑研究总院有限公司 | Soil squeezing amount-adjustable bidirectional spiral squeezing and expanding bit |
Non-Patent Citations (1)
| Title |
|---|
| 罗春红: "凸轮型冲击回转挤压钻头成孔机理的研究", 《中国优秀硕士学位论文全文数据库基础科学辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112077322A (en) * | 2020-08-27 | 2020-12-15 | 燕山大学 | Device for spinning semi-solid metal powder to form bimetal composite pipe on outer wall of steel pipe |
| CN112077322B (en) * | 2020-08-27 | 2021-06-11 | 燕山大学 | Device for spinning semi-solid metal powder to form bimetal composite pipe on outer wall of steel pipe |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20110817 |