CN105275413A - Self-dredging type drilling device - Google Patents
Self-dredging type drilling device Download PDFInfo
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- CN105275413A CN105275413A CN201510754819.1A CN201510754819A CN105275413A CN 105275413 A CN105275413 A CN 105275413A CN 201510754819 A CN201510754819 A CN 201510754819A CN 105275413 A CN105275413 A CN 105275413A
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- hollow drill
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Abstract
The invention relates to a self-dredging type drilling device. The self-dredging type drilling device comprises a drill, a screwed blade drill pipe and a hollow drill pipe; the drill includes a No.1 hollow drill pipe and a sawtooth bit connected with the No.1 hollow drill pipe; the No.1 hollow drill pipe is provided with a water outlet communicated with the inner wall of the No. 1 hollow drill pipe; the outer surface of the sawtooth bit is provided with saw teeth; the screwed blade drill pipe is composed of a No. 2 hollow drill pipe and a screwed blade which is welded to the outer wall of the No. 2 hollow drill pipe along the axial direction of the No. 2 hollow drill pipe; the hollow drill pipe is a No. 3 hollow drill pipe; and the inner walls of the No.1 hollow drill pipe, the No. 2 hollow drill pipe and the No. 3 hollow drill pipe form communicated pressure water channels. Thus, when drilling a hole with the drill, the sawtooth bit can fully chip soil, and therefore, the formation of siltage in a borehole can be decreased; the outer diameter of the screwed blade is slightly smaller than the diameter of the borehole, and therefore, when the drilling device is drawn back, the screwed blade can wholly squeeze out siltage precipitated at the bottom or lower layer of the borehole from the borehole, and therefore, a self-dredging function can be realized, and the construction quality of hole drilling can be ensured, and uplift bearing capacity of soil nails or anchors can be improved.
Description
Technical field
The present invention relates to a kind of from dredging type drilling equipment, when particularly one is used for soil nailing and armature boring in foundation ditch and slope retaining, realize the drilling equipment that in boring, mud is removed voluntarily.
Background technology
Along with the fast development of urban construction, the construction of the underground installations such as underground parking, underground commerce square, underground tunnel needs to carry out pattern foundation pit supporting structure.The methods such as plate brad supporting, bolt support, pile-anchor retaining are applied in pattern foundation pit supporting structure and extensively, a large amount of soil nailing and armature boring construction are carried out in the following soil layer of groundwater table.
In the following soil layer drilling technique of existing groundwater table, often easily cause collapse hole owing to adopting during dry operation pore-forming, pipe-following drilling cost is higher, therefore adopts slurry hole boring method more.This boring method can creeping in boring procedure, slag tap, retaining wall, the operation such as clear hole once complete.When creeping into, rig will have the mud of certain pressure (0.1-0.3MPa) at the bottom of the injection hole of drilling rod center, rig is while jacking drilling rod, drill bit is driven to cut soil body pore-forming by rotary drill rod, mud carries soil bits that drilling gets off from outside the hole tap between drilling rod and hole wall, pass back into mud pit, hole to be drilled after projected depth, the residual soil in the borehole of change clear water flushing is considered to be worth doing and mud carries out hole clearly, till the aobvious muddiness of current.Because Conventional mud retaining wall boring method generally adopts dull and stereotyped cutter head, and drilling rod is plain hollow drilling rod, and on the one hand, when dull and stereotyped cutter head cuts the soil body, the easy history soil body forms walk, and not easily clear hole is clean; On the other hand, in stickiness soil layer, in the stickiness soil layer that especially index of plasticity is larger, drill bit cuts the soil body got off and is easy to form siltage, and is deposited in foot of hole or lower floor, is difficult to even to be flushed out boring by pressure clear water.Due to the existence of siltage, make the defect that below conventional pressurized water drilling apparatus existence two is fatal: (1) siltage is between grouting body and the soil body, play lubrication, greatly reduce the frictional resistance between grouting body and the soil body, and then reduce the resistance to plucking resistance of soil nailing or anchor pole, directly affect the safety and stablization of foundation ditch or side slope; (2) there is serious necking in blocked up soil nailing or the anchor pole of easily making of local siltage, and even disconnected slurry, directly causes the resistance to plucking resistance of soil nailing or anchor pole significantly to reduce, have a strong impact on the safety and stablization of foundation ditch or side slope.
Given this, inventor furthers investigate the problems referred to above, then has this case to produce.
Summary of the invention
The object of the present invention is to provide a kind of simple structure, can significantly improve drilling construction quality from dredging type drilling equipment.
In order to achieve the above object, the present invention adopts such technical scheme:
A kind of from dredging type drilling equipment, comprise drill bit, spiral shell leaf drilling rod and hollow drill, described drill bit comprises No. 1 hollow drill and is connected to the saw-tooth tool bit on No. 1 hollow drill, saw-tooth tool bit is provided with the delivery port be communicated with No. 1 hollow drill inwall, is provided with sawtooth at the external surface of saw-tooth tool bit; Described spiral shell leaf drilling rod forms by No. 2 hollow drills and at the spiral shell leaf that No. 2 hollow drill outer walls weld vertically, and spiral shell number of sheets amount is determined according to soil layer condition, is generally no less than 3 leaves; Described hollow drill is No. 3 hollow drills; No. 1 hollow drill of drill bit, No. 2 hollow drills of described spiral shell leaf drilling rod and No. 3 common mineralization pressure aquaporins of hollow drill.
As a kind of preferred embodiment of the present invention, described saw-tooth tool bit is made up of three cutter heads, each cutter head is processed by monoblock steel plate, cutter head comprises connecting portion and bore portion, the connecting portion of three cutter heads is located at the outer wall of described No. 1 hollow drill by welding manner uniform ring, the connecting portion of three cutter heads is interconnected in a line, and connecting line is positioned on the axis of No. 1 hollow drill, forms described delivery port between adjacent two bore portion.
As preferred embodiment of the present invention, described No. 1 hollow drill is provided with inner conical threaded portion near one end of described spiral shell leaf drilling rod, No. 2 hollow drills of described spiral shell leaf drilling rod and the two ends of No. 3 hollow drills are respectively arranged with inner conical threaded portion and male-tapered threaded portion, described male-tapered threaded portion all can with the inner conical threaded portion closed butt joint of other drilling rod.As preferred embodiment of the present invention, spiral shell leaf drilling rod is directly installed on after drill bit, and connect No. 3 hollow drills after spiral shell leaf drilling rod, No. 3 hollow drill quantity are determined according to drilling depth.As preferred embodiment of the present invention, described No. 1 hollow drill, No. 2 hollow drills and No. 3 hollow drill outer walls are about 10-20cm place in distance drilling rod termination and are provided with groove, are convenient to drilling rod docking.
Adopt technical scheme of the present invention, saw-tooth tool bit can fully cut hack body along with during bit bore, reduces the formation of siltage in boring; Spiral shell leaf drilling rod is provided with spiral shell leaf, part siltage can be clipped in when drill bit creeps between spiral shell leaf and extracts from boring with drilling rod; Simultaneously, when drilling rod brill moves back, because spiral shell leaf external diameter is slightly less than bore diameter, the siltage being deposited in foot of hole or lower floor can all be extruded from bore inner by spiral shell leaf drilling rod, realize in desilting function voluntarily, ensure the construction quality of boring, improve the side skin friction of injecting cement paste and the soil body in boring, increase the resistance to plucking resistance of soil nailing or anchor pole, improve the security and stability of foundation ditch or side slope.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention when piercing soil layer;
Fig. 2 is the front view of drill bit of the present invention;
Fig. 3 is the top view of drill bit of the present invention;
Fig. 4 is the structural representation of spiral shell leaf drilling rod of the present invention;
In figure:
1-1 hollow drill; 2-saw-tooth tool bit; 3-groove; 4-inner conical threaded portion; 5-spiral shell leaf drilling rod; 6-2 hollow drill; 7-spiral shell leaf; 8-male-tapered threaded portion; 9-3 hollow drill; 10-holes; 11-mud; 12-siltage; 13-ground; 14-is domatic; 15-hillside fields; 16-inwall; 17-sawtooth; 18-connecting portion; 19-bit head.
Detailed description of the invention
In order to explain technical scheme of the present invention further, be described in detail below in conjunction with accompanying drawing.
Referring to figs. 1 through Fig. 4, a kind of from dredging type drilling equipment, comprise drill bit, spiral shell leaf drilling rod 5 and hollow drill.Three saw-tooth tool bits 2 that described drill bit comprises No. 1 hollow drill 1 and is connected on No. 1 hollow drill 1, sawtooth 17 is provided with at the external surface of saw-tooth tool bit 2, each cutter head comprises connecting portion 18 and bore portion 19, and connecting portion 18, bore portion 19 and sawtooth 17 are shaping by steel plate overall processing.Three connecting portion 18 uniform ring are located at the outer wall of described No. 1 hollow drill 1, in an embodiment, connecting portion 18 adopts welding manner to be connected on No. 1 hollow drill 1, the junction of three bore portion 19 is positioned on the axis of described No. 1 hollow drill 1, delivery port is formed between adjacent two bore portion 19, when holing, mud from the inwall 16 of No. 1 hollow drill through and from this delivery port out.
In the present invention, described spiral shell leaf drilling rod 5 comprises No. 2 hollow drills 6 and spiral shell leaf 7, the outer wall of No. 2 hollow drills 6 is provided with the axially extended spiral shell leaf 7 along No. 2 hollow drills 6, spiral shell leaf 7 is 1 spiral shell leaf along No. 2 hollow drill outer wall rotating 360 degrees, pitch is 15-25cm, and spiral shell leaf 7 arranges 3-10 sheet depending on soil layer situation.
In the present invention, described hollow drill is No. 3 hollow drills 9, No. 3 hollow drills 9 is common hollow type drilling rod, in boring procedure, creeps into drilling depth by the quantity increasing No. 3 hollow drills 9.
As preferred embodiment of the present invention, the inner conical threaded portion 4 of No. 1 hollow drill 1 of described drill bit and male-tapered threaded portion 8 closed butt joint of No. 2 hollow drills of described spiral shell leaf drilling rod, inner conical threaded portion 4 and the male-tapered threaded portion closed butt joint being fixed on the drilling rod on drilling machine of No. 2 hollow drills, rig is by applying moment of torsion and top lift to drilling rod, the moment of torsion energy rotary drill rod applied and then drive drill bit cut the soil body, top lift energy jacking drilling rod realizes creeping into, inject mud 11 by the setting-out passage of each hollow drill inside simultaneously, boring is flowed out in soil body dilution drill bit can not only cut, and can certain confined pressure be formed to hole wall and then ensure the stable of hole wall.When the docking port of No. 2 hollow drills 6 and drilling machine is apart from domatic 15-30 centimetre, time-out creeps into, the groove 3 of No. 2 hollow drills 6 is blocked with special caliper, rig bores to move back and borer drill rod is separated with No. 2 hollow drills 6, then the male-tapered threaded portion 8 of No. 3 hollow drills 9 and inner conical threaded portion 4 are aimed at the inner conical threaded portion 4 of No. 2 hollow drills and the male-tapered threaded portion 8 of borer drill rod respectively, start drilling machine to creep into, realize drilling rod spreading.When run of steel is inadequate, access all the other No. 3 hollow drills 9 successively, until boring is to projected depth.Then use clear water injection hole instead and carry out hole flushing, when clear water is flowed out in aperture, rotary drill rod, while exit drilling rod, after spiral shell leaf drilling rod exits boring, completes boring.
Due to the utilization of technique scheme, the present invention compared with prior art:
What the drilling apparatus of existing slurry hole boring method adopted is dull and stereotyped cutter head and plain hollow drilling rod, and dull and stereotyped cutter head agglomeratingly cuts the soil body, and the soil body generally becomes bulk or bulk, should not decompose and discharge boring; Plain hollow drill pipe diameter is less, the siltage precipitating formation in the borehole only depended on pressure shipwreck to remove.Therefore, can cause foot of hole or sludge buildup group of lower floor, the frictional resistance of softening injecting cement paste and soil mass section, greatly reduces the resistance to plucking resistance of soil nailing or anchor pole, directly affects the safety and stablization of foundation ditch or side slope.
With reference to 13 representing ground in Fig. 1, Fig. 1,14 represent domatic, 15 represent at the bottom of slope, and the present invention is provided with saw-tooth tool bit in drill bit in dredging type drilling equipment, can will fully cut, pulverize the soil body in boring tunneling process, reduce the formation of siltage 12, be convenient to soil bits to discharge.The rear end of described drill bit connects the spiral shell leaf drilling rod 5 with spiral shell leaf 7, in drilling process, spiral shell leaf 7 can cut the siltage 12 of the soil body and formation further, exit in process at drilling rod, spiral shell leaf drilling rod 5 directly will can be mixed in the siltage 12 between spiral shell leaf 7 after cutting and the siltage 12 that precipitates on rear side of spiral shell leaf drilling rod clears out from boring 10.Due to the application of said apparatus, fully even completely the siltage 12 in boring 10 can be removed, strengthen the frictional resistance of injecting cement paste and the soil body, the resistance to plucking resistance of soil nailing or anchor pole is increased greatly, improve the safety and stablization of foundation ditch or side slope.
The product form of invention is not limited to this case diagram and embodiment, and anyone carries out suitable change or the modification of similar thinking to it, all should be considered as not departing from patent category of the present invention.
Claims (3)
1. one kind from dredging type drilling equipment, it is characterized in that: comprise the drill bit, spiral shell leaf drilling rod and the hollow drill that are connected successively, described drill bit comprises No. 1 hollow drill and is connected to the saw-tooth tool bit on No. 1 hollow drill, saw-tooth tool bit is provided with the delivery port be communicated with the inwall of No. 1 hollow drill, is provided with sawtooth at the external surface of saw-tooth tool bit; Described spiral shell leaf drilling rod forms by No. 2 hollow drills and at the spiral shell leaf that the outer wall of described No. 2 hollow drills welds vertically; Described hollow drill is No. 3 hollow drills; The inwall of the inwall of described No. 1 hollow drill, the inwall of described No. 2 hollow drills, described No. 3 hollow drills and the common mineralization pressure aquaporin of described delivery port.
2. as claimed in claim 1 from dredging type drilling equipment, it is characterized in that: described saw-tooth tool bit is made up of three cutter heads, each cutter head is processed by monoblock steel plate, cutter head comprises connecting portion and bore portion, three cutter head uniform ring are located at the outer wall of described No. 1 hollow drill, the connecting portion of cutter head is welded on No. 1 hollow drill outer wall, cutter head bore portion is welded with the respective end of two other cutter head, and the junction of three cutter heads is positioned on the axis of described No. 1 hollow drill, between adjacent two bore portion, form described delivery port.
3. as claimed in claim 3 from dredging type drilling equipment, it is characterized in that: described No. 1 hollow drill connects described spiral shell leaf drilling rod, described spiral shell leaf drilling rod forms by No. 2 hollow drills and at the spiral shell leaf that its surrounding is established by a constant pitch ring, described spiral shell leaf drilling rod connects many described hollow drills, and different drilling rod is by inside and outside conical thread compact siro spinning technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510754819.1A CN105275413A (en) | 2015-11-09 | 2015-11-09 | Self-dredging type drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510754819.1A CN105275413A (en) | 2015-11-09 | 2015-11-09 | Self-dredging type drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105275413A true CN105275413A (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510754819.1A Pending CN105275413A (en) | 2015-11-09 | 2015-11-09 | Self-dredging type drilling device |
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| CN (1) | CN105275413A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840102A (en) * | 2016-05-18 | 2016-08-10 | 李丽丽 | Multifunctional drilling device |
| CN108915601A (en) * | 2018-09-04 | 2018-11-30 | 上海公路桥梁（集团）有限公司 | Drilling pile drill |
Citations (7)
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| WO2003071089A1 (en) * | 2002-02-20 | 2003-08-28 | Appleton Robert P | Drill string member |
| CN201053298Y (en) * | 2007-01-26 | 2008-04-30 | 永城煤电集团有限责任公司 | Dust-proof water-injection type screwy reclaiming anchor bar drill pipe |
| CN101545257A (en) * | 2008-03-24 | 2009-09-30 | 黑龙江省建工集团有限责任公司 | Novel anchor rod construction process and spare and accessory parts thereof |
| CN102312427A (en) * | 2011-04-26 | 2012-01-11 | 王庆伟 | Half soil squeezing screw expansion pile forming method |
| CN202451077U (en) * | 2012-01-20 | 2012-09-26 | 贵州永润煤业有限公司 | Efficient spiral alloy drill rod |
| CN103953280A (en) * | 2014-05-15 | 2014-07-30 | 中交第三公路工程局有限公司 | Road bridge pile foundation water drill hole-forming device and drilling method |
| CN104563886A (en) * | 2015-01-14 | 2015-04-29 | 北京中岩大地工程技术有限公司 | Segmented bit of long spiral drilling machine |
-
2015
- 2015-11-09 CN CN201510754819.1A patent/CN105275413A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003071089A1 (en) * | 2002-02-20 | 2003-08-28 | Appleton Robert P | Drill string member |
| CN201053298Y (en) * | 2007-01-26 | 2008-04-30 | 永城煤电集团有限责任公司 | Dust-proof water-injection type screwy reclaiming anchor bar drill pipe |
| CN101545257A (en) * | 2008-03-24 | 2009-09-30 | 黑龙江省建工集团有限责任公司 | Novel anchor rod construction process and spare and accessory parts thereof |
| CN102312427A (en) * | 2011-04-26 | 2012-01-11 | 王庆伟 | Half soil squeezing screw expansion pile forming method |
| CN202451077U (en) * | 2012-01-20 | 2012-09-26 | 贵州永润煤业有限公司 | Efficient spiral alloy drill rod |
| CN103953280A (en) * | 2014-05-15 | 2014-07-30 | 中交第三公路工程局有限公司 | Road bridge pile foundation water drill hole-forming device and drilling method |
| CN104563886A (en) * | 2015-01-14 | 2015-04-29 | 北京中岩大地工程技术有限公司 | Segmented bit of long spiral drilling machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840102A (en) * | 2016-05-18 | 2016-08-10 | 李丽丽 | Multifunctional drilling device |
| CN108915601A (en) * | 2018-09-04 | 2018-11-30 | 上海公路桥梁（集团）有限公司 | Drilling pile drill |
| CN108915601B (en) * | 2018-09-04 | 2023-12-19 | 上海公路桥梁（集团）有限公司 | Drill bit for bored pile |
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Application publication date: 20160127 |