CN204827241U - A centering parts for $expanding pre -cast hole with drill bit that forms drilling with lay drill bit at back - Google Patents
A centering parts for $expanding pre -cast hole with drill bit that forms drilling with lay drill bit at back Download PDFInfo
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- CN204827241U CN204827241U CN201520005282.4U CN201520005282U CN204827241U CN 204827241 U CN204827241 U CN 204827241U CN 201520005282 U CN201520005282 U CN 201520005282U CN 204827241 U CN204827241 U CN 204827241U
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- 238000005553 drilling Methods 0.000 title claims abstract description 106
- 238000009412 basement excavation Methods 0.000 claims abstract description 123
- 239000011435 rock Substances 0.000 claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims description 95
- 238000010298 pulverizing process Methods 0.000 claims description 85
- 239000011159 matrix material Substances 0.000 claims description 82
- 238000010926 purge Methods 0.000 claims description 66
- 238000007664 blowing Methods 0.000 claims description 31
- 230000032258 transport Effects 0.000 claims description 15
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 239000011148 porous material Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 38
- 238000000034 method Methods 0.000 description 8
- 239000003381 stabilizer Substances 0.000 description 8
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- 229910045601 alloy Inorganic materials 0.000 description 2
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- 230000003321 amplification Effects 0.000 description 1
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- 238000004299 exfoliation Methods 0.000 description 1
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- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
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- 238000010008 shearing Methods 0.000 description 1
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- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to a drill bit of expansion pre -cast hole in order to form drilling, the pore wall of this drilling form through cleaing away around the rock of pre -cast hole in the region of the excavation face that perpendicular to pre -cast hole basically extends, and this drill bit has a base member, and the adapting unit setting of pre -cast hole drilling rod wherein is at least one boring sword and sets up at least one instrument clamping on the base member on the base member, its characterized in that sets up two instrument clampings at least, and at least one instrument clamping is than another instrument clamping is wideer apart from the radial interval of base member at least to have at least one can with the outside boring sword of excavation face gomphosis with at least one can with the inboard boring sword of excavation face gomphosis, and at least one inboard boring sword is installed with certain angle for the excavation face respectively with at least one outside boring sword aslope. The utility model also discloses a lay at drill bit centering parts at the back.
Description
Technical field
The utility model relates to one for expanding precast hole to form the drill bit of boring, the hole wall of this boring is formed by the rock removed around precast hole in the excavation face region being substantially perpendicular to precast hole, this drill bit has matrix, matrix is provided with the link of precast hole drilling rod, wherein on matrix, at least one instrument clamping is set at least one boring cutter.
Background technology
Known so-called horizontal directional drilling method (HDD, HorizionalDirectionDrilling) in EP0360321, wherein in order to exempt to bore ground pipe laying along probing line under obstruction, sets up precast hole from origin-to-destination.Target face subsequently on precasting vent stem is provided with broaching cutter, and this broaching cutter is connected with pipeline to be installed.Broaching cutter is advanced by the rotation of precasting vent stem.By pull-out precasting vent stem, cutter pushed forward of broaching while drawing in pipeline.At this, broaching cutter is arranged like this, and broaching cutter ends at the joint face with pipeline.Only arrange one and remove pipeline in probing pipeline, this removes pipeline for being transported to the opening of boring together with the suspension being used for lubrication piping by cutting the soil that falls and being used for removing drilling cuttings.The front end of broaching cutter is set to open, thus cuts by broaching cutter the soil fallen and may to appear in broaching cutter and can mix with water and discharge.Broaching cutter itself has columniform main body, has the tooth cutting soil in its front end.US5,269,384 disclose the method and apparatus for expanding boring.At this, form precast hole by horizontal directional drilling probing equally.Subsequently broaching cutter is installed on precasting vent stem.Substantially the pipeline of precast hole diameter is met in the setting below of broaching cutter.
Verified in practice, when using horizontal directional drilling method, reaming bit can be subject to huge wearing and tearing.This particularly occurs when using so-called single-pass method, and precast hole is expanded to the final diameter of boring to be formed in the method.Wearing and tearing appear at rolling cutter/cut on wheel substantially.If rolling cutter experience wear before reaching terminal, reaming bit must be dismantled and change rolling drill bit and then again be imported in boring by reaming bit from boring, thus continues probing.This causes the obvious set-up time.
Confirm have different aspects relevant with wearing and tearing.
Drill bit boring and precast hole in centering as first in propose.Bad centering produces negative effect to the life-span of cutting part (cutting wheel) and bearing thereof and cemented carbide member.In addition, insufficient centering also can cause vibration and vibrations to be extended to rig through drilling rod.In addition, bad in the borehole centering also causes occurring not round boring along drilling path.When many logical reamings, bad centering can cause the wearing and tearing of another passage.
In addition, on foot of hole and be not flushed to boring outlet by the suspension introduced after being deposited directly to drill bit by large drilling cuttings and can produce wearing and tearing yet.These large drilling cuttings remain in foot of hole and enter and go out only to go out again/shot borehole being pulverized by reaming bit.This problem is left in the basket or causes bore diameter to exceed size at present, thus is pipeline importing boring space for the creativity.The wearing and tearing of usually cutting wheel can cause cutting wheel and change interval shortening.In addition, first this also can cause the loss of the carbide alloy of rolling cut wheel diameter grade, and this can cause less boring again.
Utility model content
The purpose of this utility model is to provide a kind of drill bit and is a kind ofly laid in drill bit centring elements below, thereby reduces the wearing and tearing of rolling cut wheel.
According to the utility model, provide a kind of for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one instrument clamping is set at least one boring cutter, it is characterized in that, two instrument clampings are at least set, the spaced radial that at least one instrument clamping compares at least another instrument clamping and matrix with the spaced radial of matrix is wider, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install obliquely at a certain angle relative to excavation face respectively.
According to the utility model, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude.
According to the utility model, the interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °, preferably 135 ° to 140 °.
According to the utility model, be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region.
According to the utility model, a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region, wherein said driving tool at least arranges a purge nozzle, and described driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or described driving tool radial direction covers the probing region of drill bit.
According to the utility model, be provided with the pulverizing tool for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein pulverize gap can to regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool.
According to the utility model, at least arrange one for lifting the driving tool of the drilling cuttings being positioned at foot of hole, described driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °, and wherein said pressure surface arranges centering face and/or crushed face at its radial outside.
According to the utility model, described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
According to the utility model, provide a kind of for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region.
According to the utility model, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install with an angular slope relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude, and/or the interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °, preferably 135 ° to 140 °,
And/or a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region, wherein said driving tool at least arranges a purge nozzle, and driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or driving tool radial direction covers the probing region of drill bit
And/or the pulverizing tool be provided with for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein said pulverizing gap can regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool
And/or at least arrange one for lifting the driving tool of the drilling cuttings being positioned at foot of hole, described driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °, wherein said pressure surface arranges centering face and/or crushed face at its radial outside
And/or described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
According to the utility model, provide a kind of for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region.
According to the utility model, described driving tool at least arranges one and purges shower nozzle.
According to the utility model, described driving tool and/or cutting tool for boring have the profile of excavation face surface profile.
According to the utility model, described driving tool radial direction covers the probing region of drill bit.
According to the utility model, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install with an angular slope relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude and/or, interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °, preferably 135 ° to 140 °,
And/or be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region,
And/or the pulverizing tool be provided with for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein said pulverizing gap can regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool
And/or at least arrange one for lifting the driving tool of the drilling cuttings being positioned at foot of hole, described driving tool have relative to drill center line with the pressure surface of the angular slope of < 20 °, wherein said pressure surface is at the arranged outside centering face of its radial direction and/or crushed face
And/or described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
According to the utility model, provide a kind of for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, be provided with the pulverizing tool for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, described pulverizing gap can regulate.
According to the utility model, described crushed face is laid obliquely relative to hole wall.
According to the utility model, described pulverizing tool is arranged on the outside of a driving tool.
According to the utility model, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install with an angular slope relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude and/or, interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °, preferably 135 ° to 140 °,
And/or be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region,
And/or a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lift over face has been cut the drilling cuttings that falls and has transported out probing region, wherein said driving tool at least arranges a purge nozzle, and driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or driving tool radial direction covers the probing region of drill bit
And/or a driving tool is at least set for lifting the drilling cuttings being positioned at foot of hole, described driving tool have relative to drill center line with the pressure surface of the angular slope of < 20 °, wherein said pressure surface is at the arranged outside centering face of its radial direction and/or crushed face
And/or described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
According to the utility model, provide a kind of for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, at least arrange one for lifting the driving tool of the drilling cuttings being positioned at foot of hole, described driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °.
According to the utility model, described pressure surface is provided with centering face and/or crushed face in its radial outer side.
According to the utility model, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install with an angular slope relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude and/or, interior angle between described inner side boring cutter and described outside boring cutter cutter is 120 ° to 150 °, preferably 135 ° to 140 °,
And/or be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region,
And/or the pulverizing tool be provided with for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein said pulverizing gap can regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool
And/or a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region, wherein said driving tool at least arranges a purge nozzle, and driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or driving tool radial direction covers the probing region of drill bit.
And/or described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
According to the utility model, provide a kind of for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, described instrument clamping can radiai adjustment.
According to the utility model, multiple pad is set for providing the adjustability of instrument clamping.
According to the utility model, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter have certain angle to install obliquely relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude and/or, interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °, preferably 135 ° to 140 °,
And/or be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region,
And/or the pulverizing tool be provided with for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein said pulverizing gap can regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool
And/or a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region, wherein said driving tool at least arranges a purge nozzle, and driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or driving tool radial direction covers the probing region of drill bit
And/or a driving tool is at least set for lifting the drilling cuttings being positioned at foot of hole, described driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °, and wherein said pressure surface is at the arranged outside centering face of its radial direction and/or crushed face.
According to the utility model, described drill bit at least arranges one relative to the effective centring elements of hole wall in its side away from excavation face.
According to the utility model, described link is set to enter in precast hole and/or substantially have the diameter of precasting rig floor and/or have centering part with extending, and the diameter of described centering part is substantially the same with precast hole diameter.
According to the utility model, a stabilizing means is at least set, there is in the outside of described stabilizing means hole wall radius or smooth contact portion.
According to the utility model, described stabilizing means is designed to driving tool.
According to the utility model, after described drill bit, be provided with centring elements.
According to the utility model, additionally provide and be a kind ofly laid in drill bit centring elements below, described drill bit is particularly according to the drill bit with matrix in claims 1 to 35 described in any one, described drill bit has the link for being assemblied in by centring elements on drilling rod, wherein be provided with circular arc is arranged on the bracket component on matrix part through at least one on the matrix, described circular arc shaped portion is consistent with the probing radius of drill bit, wherein at least one circular arc shaped portion has the driving tool for lifting the drilling cuttings being positioned at foot of hole, described driving tool have relative to drill center line with the pressure surface of the angular slope of < 20 °.
According to the utility model, described pressure surface is provided with centering face and/or crushed face at its radial outside.
According to the utility model, first solution of this object is, two instrument clampings are at least set, at least one instrument clamping is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus at least there is an outside boring cutter and an inner side boring cutter, boring cutter can be chimeric with excavation face, and outside at least one boring cutter and inside at least one boring cutter install with an angular slope relative to excavation face respectively.
The beneficial effects of the utility model are, the mutual angled installation of boring cutter can make drill bit feel relieved ideally relative to excavation face, thus reduce the wearing and tearing of rolling cut wheel significantly.
Of the present utility model one preferably instruction be set to, two boring cuttves are installed like this, excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protruding.At this, the interior angle between boring cutter is 120 ° to 150 °, and preferably 135 ° is favourable to 140 °.
According to the utility model, second solution of this object is, setting can send the purge nozzle of blowing medium, and wherein purge nozzle is laid like this, can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region.
The beneficial effects of the utility model are, by purging the gap in diameter region between hole wall and rolling cut wheel targetedly, significantly can reduce the wearing and tearing of rolling cut wheel in a straightforward manner.
According to the utility model, 3rd solution of this object is, at least arrange a driving tool, described driving tool has the chimeric region with excavation face, boring cutter is arranged on driving tool, and this driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region.
The beneficial effects of the utility model are also, can reduce wearing and tearing significantly by directly lifting drilling cuttings in excavation face.In addition, rolling cut wheel occurs the reduction of wearing and tearing, because by arranging on driving tool, independent boring cutter makes to be present in excavation face, part cuts the rock that falls or existing loosening rock is cut by extra boring cutter simultaneously, instead of cut and necessary pulverizing further by rolling cut wheel, the wearing and tearing that this crushing process equally also can cause rolling cut to be taken turns.
A preferred instruction of the present utility model is set to, and driving tool at least arranges a purge nozzle.Thus improve washing away and promoting the rock of partial exfoliation or simultaneously the coming off of existing loosening rock of drilling cuttings.
In addition, driving tool and/or cutting tool for boring have the shape of excavation face surface profile to be favourable.Of the present utility model another is taught as, and driving tool radial direction covers the probing region of drill bit.The special transport of drilling cuttings is thoroughly ensured with this.
According to the utility model, the 4th solution of this object is, this pulverizing tool has the crushed face that can move along hole wall for pulverizing the pulverizing tool of drilling cuttings to arrange one, thus between crushed face and hole wall, form pulverizing gap.
Directly on drill bit, arrange such pulverizing tool can cause washing away of better drilling cuttings.Perhaps well can not wash away by the air-flow of the blowing medium flowed in the borehole the major diameter drilling cuttings cutting and trend towards being deposited on foot of hole.At present, breaking tool only when washing away the pipeline arranged for this reason, such as, uses in micro-tunneling or similar method.Current this kind of extra breaker can't realize in horizontal directional drilling method.
A preferred instruction of the present utility model is set to, and pulverizing gap can regulate.Can realize determining according to blowing medium the maximum particle size that washes away with this.
In addition, crushed face is installed obliquely relative to hole wall is favourable.Particularly preferred pulverizing result can be realized with this.
Another instruction of the present utility model is set to, and pulverizing tool is laid on the outside of driving tool.This means the possibility that a kind of effective instrument is installed, and do not need, on drill bit, extra parts are installed.
According to the utility model, 5th solution of this object is, at least arrange a driving tool for lifting the drilling cuttings being positioned at foot of hole, this driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °.
The beneficial effects of the utility model are, can be realized the transport of effective especially drilling cuttings by the pressure surface tilted.Drill bit drilling cuttings is not below rooted out by the pressure surface of the straight angle, but pushes along the girth of boring and depend on gravity and fall at boring top and directly enter thus in the air-flow of blowing medium.
A preferred instruction of the present utility model is set to, and this pressure surface has centering face and/or crushed face in the arranged outside of its radial direction.
According to the utility model, the 6th solution of this object is, instrument clamping is set to can radial adjustment.
The beneficial effects of the utility model are, can reduce the wearing and tearing of the rolling cut wheel in outside thus significantly.By adjustment instrument clamping, new boring cutter reloads excavation face after replacement not to be needed special in diameter region excessive exercise, because do not need expansion diameter in the region of being taken turns processing by the rolling cut worn and torn, the diameter for importing the drill bit with new rolling cut wheel just can be realized.
One of the present utility model is preferably taught as, and arranges the adjustability of multiple pad for providing rolling cut to take turns.This is a kind of possibility being especially simply used for regulating.
Above-mentioned six solutions according to the purpose of this utility model mutually can combine in an advantageous manner and reduce wearing and tearing.
Of the present utility model another is taught as, and drill bit at least arranges one relative to the effective centring elements of hole wall in its side away from excavation face.The further improvement of stability of bit can be realized in a straightforward manner with this.
Of the present utility model another is taught as, and link is set to enter in precast hole and/or substantially have the diameter of precasting rig floor and/or have centering part with extending, and the diameter of this centering part is substantially the same with precast hole diameter.The further improvement of stability of bit can be realized in a straightforward manner with this.
Of the present utility model another is taught as, and at least arranges a stabilizing means, and outside it, have hole wall radius or smooth contact portion, this stabilizing means is preferably designed to driving tool.The further improvement of stability of bit can be realized in a straightforward manner with this.
Of the present utility model another is taught as, and is provided with following centring elements after drill bit.
According to the utility model, another solution of this object is, have after the drill bit of matrix, particularly above-mentioned embodiment drill bit below centring elements is installed, this bit matrix has the link for being assemblied in by centring elements on drilling rod, on matrix, be wherein provided with circular arc be arranged on part on matrix through at least one installing component, circular arc shaped portion is consistent with the probing radius of drill bit, wherein at least one circular arc shaped portion has the driving tool for lifting the drilling cuttings being positioned at foot of hole, this driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °.
By arranging the drilling rod of centring elements Absorbable organic halogens after drill bit, this directly serves positive role to drill bit relative to the centering of excavation face.In addition, drilling cuttings can be avoided to be ground again and the further wearing and tearing produced thus by drill bit by getting rid of the drilling cuttings that may be deposited on foot of hole targetedly.
Of the present utility model another is taught as, and pressure surface is preferably provided with centering face and/or crushed face at its radial outside.
Also need supplementary notes, the statement of "and/or" be interpreted as individual features " with " combine with "or".
Accompanying drawing explanation
Next solution of the present utility model is further described by preferred embodiment by reference to the accompanying drawings.
At this
Fig. 1 shows according to drill bit of the present utility model the first stereogram in the borehole,
Fig. 2 shows second stereogram of Fig. 1,
Fig. 3 shows another stereogram according to drill bit of the present utility model,
Fig. 4 shows according to partly cut-away's three-dimensional side view of drill bit of the present utility model and the partly cut-away's three-dimensional side view of boring by being formed according to drill bit of the present utility model,
Fig. 5 shows the partial section for Fig. 4, and do not illustrate around boring,
Fig. 6 shows the partial view cut open according to drill bit of the present utility model,
Fig. 7 shows according to another partial view cut open of drill bit of the present utility model,
Fig. 8 shows and is in the first position schematic diagram according to the instrument clamping with boring cutter of drill bit of the present utility model,
Fig. 9 shows and is in second place schematic diagram according to the instrument clamping with boring cutter of drill bit of the present utility model,
Figure 10 shows the fragmentary cross-sectional view according to the utility model stabilizer, and
Figure 11 shows the sectional drawing relative to Figure 10.
Detailed description of the invention
Fig. 1 and Fig. 2 illustrate at the bottom of hole/rock 101 in boring 100, after completing boring 100, pipeline (not shown) inserts in this boring.100 the precast hole 102 set up from initial point (not shown) to impact point (not shown) is preset with for holing.As shown in Figure 1, boring 100 has excavation face 103 and hole wall 104.Excavation face 103 is substantially perpendicular to precast hole 102.
Drill bit 10 is arranged in boring 100, and wherein drill bit relates to reaming bit.Drill bit 10 has matrix 11, and the crossbeam 12 be connected with interval with support ring 13 radial direction is arranged on matrix.Crossbeam 11 is provided with instrument clamping 14, and rolling cut wheel 15 is arranged on instrument clamping.Rolling cut wheel 15 has by carbide alloy, the gear teeth 16 that such as tungsten carbide is made, and is used at the bottom of the hole of pruning in excavation face 103 and rock 101.
In addition, for connecting the drilling rod (not shown) being arranged in precast hole 102 first connects 17 is arranged on matrix 11 with the afterbody at drill bit 10 for the second connection 18 being connected the drilling rod (not shown) being positioned at boring 100.Be arranged in precast hole 102 and the stabilizer 19 with the same diameter basic with precast hole is arranged in the first connection 17.
As shown in the right part of flg of Fig. 4, excavation face 103 has the V-notch 105 extended around precast hole 102 radial direction.Showing, drill bit 10 can be made specific relative to boring 100 stable by arranging V-notch 105.In order to form V-notch 105, the instrument clamping 14 of some should be aimed at like this, its rolling cut wheel 15 is chimeric with the outer side edges 106 of the farther V-notch 105 of precast hole 102 radial distance and form this outer side edges, and the instrument clamping 14 of another part should be aimed at like this, its rolling cut wheel 15 is chimeric with the inner side edge 107 of the nearer V-notch 105 of precast hole radial distance and form this inner side edge.Also have a kind of selectable and in this unshowned possibility, V-notch 105 is reversions, that is as the protrusion clamp-oned in boring 100.To this, it is required that instrument clamping 14 and the rolling cut wheel 15 be laid in wherein are installed accordingly.In the present embodiment of drill bit 10, three rolling cut wheels 15 are arranged like this, and these three rolling cut wheels form the outer side edges 106 of excavation face 103, and another two rolling cuts wheel 15 is set to form inner side edge 107.
Purge nozzle 20 is arranged on its rolling cut wheel 15 and is formed on the instrument clamping of outer side edges 106, and this purge nozzle can purge the gap 108 between the outside tooth row 21 and hole wall 104 of rolling cut wheel 15, thus avoids the wearing and tearing of outside tooth row 21 targetedly.Because the gap width in gap 108 is very little, drilling cuttings 109, at this, is particularly assembled on foot of hole 113, and drilling cuttings correspondingly causes the excessive wear of outside tooth row.This situation can be avoided to occur by purging gap 108 targetedly.
In addition, crossbeam 12 is also provided with broach tool/driving tool 22.This broach tool 22 is as the driving tool of the drilling cuttings 109 lifted in excavation face 103.This broach tool/driving tool has boring cutter 23 before it.This boring cutter 23 there is the shape substantially the same with V-notch 105 and when drill bit 10 rotates inswept otch.Broach tool 22 can be removed the cutting zone of taking turns 15 from rolling cut by rolling cut wheel 15 and cut the drilling cuttings 109 fallen.In addition, the boring cutter 23 of broach tool 22 is chimeric with excavation face 103 and can to scrape and remove in excavation face 103 rock that loosens and take turns 15 by rolling cut and cut the rock fallen in advance.Avoid loosening rock through rolling cut wheel 15 with this, serve the effect reducing wearing and tearing like this.Broach tool 22 is provided with purge nozzle 20 equally that purge gap 108.In addition, broach tool 22 is provided with the purge nozzle 24 purging excavation face 103 and V-notch 105.Broach tool 22 is arranged with an angular slope relative to the diameter of boring 100.The amplification display in Figure 5 of this broach tool 22 illustrates again.In addition, the stabilizer face 29 with the wearing and tearing sheet 30 that can change also is provided with in the outside of crossbeam 12.Stabilizer face 29, also as stabilizer 19, is played and is made drill bit 10 certralizing ability better in boring 100, wherein stabilizer face and its wearing and tearing sheet 30 chimeric with hole wall 104.In addition, the broach tool 25 with elongated substrate 26 is arranged on (see Fig. 7) on support ring 13.Wearing and tearing sheet 27 is arranged on the side of broach tool towards hole wall 104.The side of matrix 26 is provided with wearing and tearing sheet 28.Wearing and tearing sheet 27,28 can be changed.Broach tool 25 is by wearing and tearing sheet 27,28 carry the drilling cuttings 109 particularly on foot of hole 113, upwards transport in boring 100 along hole wall 104 as shown in figure 11, until drilling cuttings 109 due to self gravitation from wearing and tearing sheet 28 before servo-actuated region 31 come off and fall.Drilling cuttings 109 can enter flow region 110 whereby, and the speed of wherein drilling air-flow is greater than the air velocity of the exterior zone of hole wall 104, and drilling cuttings 109 is again servo-actuated in the gas flow thus, as shown in Figure 10.
At this, it is 0 ° to 20 ° inclination relative to the center line of boring 100 that broach tool 25 on drill bit 10 is arranged on the pressure surface covered on matrix 26 and by wearing and tearing sheet 28, because show, in servo-actuated region 31, drilling cuttings can transport to boring top 111 well especially whereby.
As shown in Figure 6, broach tool 22 is provided with pulverizing tool 32.The crushed face 33 arranging and there is the wearing and tearing sheet 34 that can change is related at this.As shown in Figure 6, this crushed face is arranged with angle [alpha] obliquely relative to hole wall 104.Formed between crushed face 33 and hole wall 104 and pulverize gap 112, be greater than and pulverize the drilling cuttings 109 in gap 112 and to be gathered in this pulverizing gap and to be pulverized by the shearing force formed between hole wall 104 and crushed face 33 pulverizing in gap 112.In order to pulverize drilling cuttings 109 better, pulverizing tool 32 can be arranged on broach tool 25.Pulverizing tool 32 can be arranged on broach tool 22, the diverse location on 25, thus can realize pulverize gap 112 depend on the maximum sized controllability of the expection of drilling cuttings 109.
The retainer ring 35 be connected with support ring 13 through brace 36 is provided with at the rear side of support ring 13.Support ring 13 better stability on matrix 11 is realized with this.The rear side of crossbeam 12 is provided with purge nozzle 37, and this purge nozzle, by exporting blowing medium in the exterior zone of boring 100 extraly to hole wall 104, can cause the air velocity that blowing medium is higher, thus ensures to discharge drilling cuttings 109 better.
Because show, the wearing and tearing of rolling cut wheel 15 may change the diameter of boring 100, this rolling cut wheel 15 that drill bits 10 after changing rolling cut wheel 15 can be caused to ressemble and enter boring 100 stylish additionally goes through the region that diameter diminishes, and wear and tear again with this outside causing rolling cut to take turns 15, therefore rolling cut wheel 15 can move radially in instrument clamping 14 between primary importance (as shown in Figure 8) and the second place (as shown in Figure 9).In order to fix rolling cut wheel 15 in instrument clamping 14, being provided with pad 38, the outside of instrument clamping 14 or the position of inner side can being separately fixed at by this pad rolling cut wheel 15.
In order to realize drill bit 10 better centering and in addition reduce the wearing and tearing of rolling cut wheel 15 when assembly and disassembly drill bit 10, and removing drilling cuttings 109 better, being arranged on the drilling rod 39 in drill bit 10 connection 18 below and being also provided with centring elements 40.This centring elements has matrix 41, and crossbeam 42 is radially inwardly arranged on this matrix relative to hole wall 104.Crossbeam 42 is provided with the steady component 43 covering a part of hole wall 104.As shown in Figure 10, multiple cross bar 42 is arranged one by one.Steady component 48 has broach tool 44 in one side, defines servo-actuated region 31 before this broach tool.Broach tool has the pressure surface 45 being provided with wearing and tearing sheet 28.As shown in FIG. 10 and 11, drilling cuttings 109 carries through broach tool 44, is transported to boring top 111, drilling cuttings 109 by boring top come off the flow region 110 that enters probing air-flow and like this conveying drilling cuttings 109 discharge from boring 100.As shown in Figure 10, a part of drilling cuttings 109 is deposited on foot of hole 113 again.When dismantling drill bit 10, this part drilling cuttings is pushed into again subsequently and is correspondingly transported to flow region 110 again.If it is necessary that drill bit 10 and centring elements 40 rotate in a different direction, so as shown in figure 11, corresponding broach tool can be arranged on two sides of steady component 43.
Description of reference numerals:
10 drill bits;
11 matrixes;
12 crossbeams;
13 support rings;
14 instrument clampings;
15 rolling cut wheels;
16 gear teeth;
17 connect;
18 connect;
19 stabilizers;
20 purge nozzle;
Tooth row outside 21;
22 broach tools/driving tool;
23 boring cuttves;
24 purge nozzle;
25 broach tools/driving tool;
26 matrixes;
27 wearing and tearing sheets;
28 wearing and tearing sheets;
29 stabilizer faces;
30 wearing and tearing sheets;
31 servo-actuated regions;
32 pulverizing tools;
33 crushed faces;
34 wearing and tearing sheets;
35 retainer rings;
36 braces;
37 purge nozzle;
38 pads;
39 drilling rods;
40 centring elements;
41 matrixes;
42 crossbeams;
43 steady components;
44 broach tools;
45 pressure surfaces;
100 borings;
At the bottom of 101 holes/rock;
102 precast holes;
103 excavation faces;
104 hole walls;
105V shape otch;
106 sides, outward;
107 sides, in;
108 gaps;
109 drilling cuttings;
110 flow regions;
111 boring tops;
112 pulverize gap;
113 foot of holes;
α angle of slope.
Claims (38)
1. one kind for expand precast hole with formed boring drill bit, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one instrument clamping is set at least one boring cutter, it is characterized in that, two instrument clampings are at least set, the spaced radial that at least one instrument clamping compares at least another instrument clamping and matrix with the spaced radial of matrix is wider, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install obliquely at a certain angle relative to excavation face respectively.
2. drill bit according to claim 1, is characterized in that, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude.
3. drill bit according to claim 1, is characterized in that, the interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °.
4. drill bit according to claim 3, is characterized in that, the interior angle between described inner side boring cutter and described outside boring cutter is 135 ° to 140 °.
5. drill bit according to claim 1, is characterized in that, is provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region.
6. drill bit according to claim 1, it is characterized in that, a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region, wherein said driving tool at least arranges a purge nozzle, and described driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or described driving tool radial direction covers the probing region of drill bit.
7. drill bit according to claim 1, it is characterized in that, be provided with the pulverizing tool for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein pulverize gap can to regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool.
8. drill bit according to claim 1, it is characterized in that, at least arrange one for lifting the driving tool of the drilling cuttings being positioned at foot of hole, described driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °, and wherein said pressure surface arranges centering face and/or crushed face at its radial outside.
9. drill bit according to claim 1, is characterized in that, described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
10. one kind for expand precast hole with formed boring drill bit, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region.
11. drill bits according to claim 10, it is characterized in that, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install with an angular slope relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude, and/or the interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °,
And/or a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region, wherein said driving tool at least arranges a purge nozzle, and driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or driving tool radial direction covers the probing region of drill bit
And/or the pulverizing tool be provided with for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein said pulverizing gap can regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool
And/or at least arrange one for lifting the driving tool of the drilling cuttings being positioned at foot of hole, described driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °, wherein said pressure surface arranges centering face and/or crushed face at its radial outside
And/or described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
12. drill bits according to claim 11, is characterized in that, the interior angle between described inner side boring cutter and described outside boring cutter is 135 ° to 140 °.
13. 1 kinds for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region.
14. drill bits according to claim 13, is characterized in that, described driving tool at least arranges one and purges shower nozzle.
15. drill bits according to claim 13, is characterized in that, described driving tool and/or cutting tool for boring have the profile of excavation face surface profile.
16. drill bits according to claim 13, is characterized in that, described driving tool radial direction covers the probing region of drill bit.
17. drill bits according to claim 13, it is characterized in that, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install with an angular slope relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude and/or, interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °, and/or be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region,
And/or the pulverizing tool be provided with for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein said pulverizing gap can regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool
And/or at least arrange one for lifting the driving tool of the drilling cuttings being positioned at foot of hole, described driving tool have relative to drill center line with the pressure surface of the angular slope of < 20 °, wherein said pressure surface is at the arranged outside centering face of its radial direction and/or crushed face
And/or described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
18. drill bits according to claim 17, is characterized in that, the interior angle between described inner side boring cutter and described outside boring cutter is 135 ° to 140 °.
19. 1 kinds for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, be provided with the pulverizing tool for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, described pulverizing gap can regulate.
20. drill bits according to claim 19, is characterized in that, described crushed face is laid obliquely relative to hole wall.
21. drill bits according to claim 19, is characterized in that, described pulverizing tool is arranged on the outside of a driving tool.
22. drill bits according to claim 19, it is characterized in that, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install with an angular slope relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude and/or, interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °, and/or be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region,
And/or a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lift over face has been cut the drilling cuttings that falls and has transported out probing region, wherein said driving tool at least arranges a purge nozzle, and driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or driving tool radial direction covers the probing region of drill bit
And/or a driving tool is at least set for lifting the drilling cuttings being positioned at foot of hole, described driving tool have relative to drill center line with the pressure surface of the angular slope of < 20 °, wherein said pressure surface is at the arranged outside centering face of its radial direction and/or crushed face
And/or described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
23. drill bits according to claim 22, is characterized in that, the interior angle between described inner side boring cutter and described outside boring cutter is 135 ° to 140 °.
24. 1 kinds for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, at least arrange one for lifting the driving tool of the drilling cuttings being positioned at foot of hole, described driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °.
25. drill bits according to claim 24, is characterized in that, described pressure surface is provided with centering face and/or crushed face in its radial outer side.
26. drill bits according to claim 24, it is characterized in that, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter install with an angular slope relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude and/or, interior angle between described inner side boring cutter and described outside boring cutter cutter is 120 ° to 150 °,
And/or be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region,
And/or the pulverizing tool be provided with for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein said pulverizing gap can regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool
And/or a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region, wherein said driving tool at least arranges a purge nozzle, and driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or driving tool radial direction covers the probing region of drill bit.
And/or described instrument clamping can radial adjust, and wherein arranges multiple for providing the pad of adjustability.
27. drill bits according to claim 26, is characterized in that, the interior angle between described inner side boring cutter and described outside boring cutter is 135 ° to 140 °.
28. 1 kinds for expanding precast hole to form the drill bit of boring, the hole wall of described boring is formed by the rock removed around precast hole in the region being substantially perpendicular to the excavation face that precast hole extends, described drill bit has matrix, the link of precast hole drilling rod is arranged on the matrix, wherein on the matrix at least one boring cutter is provided with at least one instrument clamping, it is characterized in that, described instrument clamping can radiai adjustment.
29. drill bits according to claim 28, is characterized in that, arrange multiple pad for providing the adjustability of instrument clamping.
30. drill bits according to claim 28, it is characterized in that, two instrument clampings are at least set, the spaced radial of at least one instrument clamping distance matrix is than at least another instrument clamping is wider apart from the spaced radial of matrix, thus have at least one outside boring cutter that can be fitted together to excavation face and at least one can be chimeric with excavation face inner side boring cutter, and described inside at least one boring cutter and outside at least one boring cutter have certain angle to install obliquely relative to excavation face respectively, wherein said inner side boring cutter and described outside boring cutter are arranged like this, described excavation face have at least one radial loop around wedge-shaped impression or at least one radial loop around wedge shape protrude and/or, interior angle between described inner side boring cutter and described outside boring cutter is 120 ° to 150 °,
And/or be provided with the purge nozzle that can send blowing medium, wherein said purge nozzle can with the blowing medium of ejection purge hole wall and boring cutter towards hole wall Outboard Sections between region,
And/or the pulverizing tool be provided with for pulverizing drilling cuttings, described pulverizing tool has the crushed face that can move along hole wall, thus between crushed face and hole wall, form pulverizing gap, wherein said pulverizing gap can regulate and/or crushed face is arranged obliquely relative to hole wall, and/or pulverizing tool is laid on the outside of driving tool
And/or a driving tool is at least set, described driving tool has the chimeric region with excavation face, boring cutter is arranged on described driving tool, and described driving tool lifts drilling cuttings that to have cut to fall in excavation face and transports out probing region, wherein said driving tool at least arranges a purge nozzle, and driving tool and/or cutting tool for boring have the shape of excavation face surface profile, and/or driving tool radial direction covers the probing region of drill bit
And/or a driving tool is at least set for lifting the drilling cuttings being positioned at foot of hole, described driving tool has relative to drill center line with the pressure surface of the angular slope of < 20 °, and wherein said pressure surface is at the arranged outside centering face of its radial direction and/or crushed face.
31. drill bits according to claim 30, is characterized in that, the interior angle between described inner side boring cutter and described outside boring cutter is 135 ° to 140 °.
32., according to the drill bit in claims 1 to 31 described in any one, is characterized in that, described drill bit at least arranges one relative to the effective centring elements of hole wall in its side away from excavation face.
33. according to the drill bit in claims 1 to 31 described in any one, it is characterized in that, described link is set to enter in precast hole and/or substantially have the diameter of precasting rig floor and/or have centering part with extending, and the diameter of described centering part is substantially the same with precast hole diameter.
34., according to the drill bit in claims 1 to 31 described in any one, is characterized in that, at least arrange a stabilizing means, have hole wall radius or smooth contact portion in the outside of described stabilizing means.
35. drill bits according to claim 34, is characterized in that, described stabilizing means is designed to driving tool.
36. drill bits according to claim 32, is characterized in that, after described drill bit, be provided with centring elements.
37. are laid in drill bit centring elements below, described drill bit is according to the drill bit with matrix in claims 1 to 35 described in any one, described drill bit has the link for being assemblied in by centring elements on drilling rod, wherein be provided with circular arc is arranged on the bracket component on matrix part through at least one on the matrix, described circular arc shaped portion is consistent with the probing radius of drill bit, wherein at least one circular arc shaped portion has the driving tool for lifting the drilling cuttings being positioned at foot of hole, described driving tool have relative to drill center line with the pressure surface of the angular slope of < 20 °.
38., according to centring elements according to claim 37, is characterized in that, described pressure surface is provided with centering face and/or crushed face at its radial outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520005282.4U CN204827241U (en) | 2015-01-05 | 2015-01-05 | A centering parts for $expanding pre -cast hole with drill bit that forms drilling with lay drill bit at back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520005282.4U CN204827241U (en) | 2015-01-05 | 2015-01-05 | A centering parts for $expanding pre -cast hole with drill bit that forms drilling with lay drill bit at back |
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| Publication Number | Publication Date |
|---|---|
| CN204827241U true CN204827241U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520005282.4U Active CN204827241U (en) | 2015-01-05 | 2015-01-05 | A centering parts for $expanding pre -cast hole with drill bit that forms drilling with lay drill bit at back |
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| Country | Link |
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| CN (1) | CN204827241U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618331A (en) * | 2020-04-20 | 2020-09-04 | 王建国 | Mechanical device and method for deep foundation pit supporting anchor rod hole-forming inner reaming drill rod |
| CN114770765A (en) * | 2022-06-17 | 2022-07-22 | 江苏菲尔浦工程科技有限公司 | A washing drilling equipment for civil engineering |
-
2015
- 2015-01-05 CN CN201520005282.4U patent/CN204827241U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618331A (en) * | 2020-04-20 | 2020-09-04 | 王建国 | Mechanical device and method for deep foundation pit supporting anchor rod hole-forming inner reaming drill rod |
| CN114770765A (en) * | 2022-06-17 | 2022-07-22 | 江苏菲尔浦工程科技有限公司 | A washing drilling equipment for civil engineering |
| CN114770765B (en) * | 2022-06-17 | 2022-09-02 | 江苏菲尔浦工程科技有限公司 | A washing drilling equipment for civil engineering |
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