CN102011555B - Double-cone and double-helix drill bit for rotary drilling rig - Google Patents
Double-cone and double-helix drill bit for rotary drilling rig Download PDFInfo
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- CN102011555B CN102011555B CN 201010274498 CN201010274498A CN102011555B CN 102011555 B CN102011555 B CN 102011555B CN 201010274498 CN201010274498 CN 201010274498 CN 201010274498 A CN201010274498 A CN 201010274498A CN 102011555 B CN102011555 B CN 102011555B
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Abstract
A double-cone and double-helix drill bit for rotary drilling rigs comprises a mandrel tube and a flange. The flange is disposed on the top of the mandrel tube. The upper part of the mandrel tube is cylindrical-like shaped and the lower part is cone shaped. Two side margins of the axial section of the mandrel tube are wave-shaped. Two screw blades arranged in an intertwined mode are disposed on the outer peripheral face of the mandrel tube. The upper ends of the two screw blades are connected with the upper plate and the lower ends are connected with the lower plate. The upper plate is fixed on the upper part of the mandrel tube and the lower plate is fixed on the lower part of the mandrel tube. Bullet cutter bits II are disposed on the lower halves of the two screw blades. Bullet cutter bits III are disposed on the bottom surface of the lower part of the mandrel tube. Bullet cutter bits I are disposed on the outer peripheral face of the lower part of the mandrel tube. The double-cone and double-helix drill bit for rotary drilling rigs of the present invention has the advantages of strong drilling ability, well adaptability, high work efficiency, low energy consumption, and long service life. The double-cone and double-helix drill bit can work not only in general soil layer and sandy soil layer but also in bedrock formation and boulder layer which have higher hardness.
Description
Technical field
The present invention relates to the short augers that a kind of rotary drilling rig is used, especially relate to a kind of rotary drilling rig bipyramid double-helix drill bit.
Background technology
Rotary drilling rig is the construction machinery of pore-forming operation in a kind of suitable building foundation engineering, is widely used in the ground foundation construction workss such as urban construction, highway bridge, highrise building.Rotary drilling rig has that installed power is large, output torque is large, axial compression is large, maneuverability, high efficient construction.Rotary drilling rig is by unit head output torque and plus-pressure, and the moment of torsion of exporting and plus-pressure all finally pass to drill bit.Therefore, drill bit is to determine that can rotary drilling rig better adapt to the vitals of bad ground, raising work efficiency.Different according to formation drilling, short augers is divided into rock inserted bit with short screw and the short augers of soil layer.Generally speaking, rock inserted bit with short screw mostly is the conehead type, namely the helical blade diameter from large to small, the short augers of soil layer mostly is forward type, i.e. helical blade equal diameters everywhere.In use there is following problem in existing short augers:
(1) because geology is intricate, existing short augers drilling ability is poor, and compliance is not strong, when constructed in different stratum, needs the frequent drill bit, inefficiency;
When (2) carrying out the rock stratum construction, the cutting edge part smear metal resistance of drill bit is large, and along with the increase of creeping into moment of torsion, drilling tool the pressure of the drill strengthens, and like this, not only can cause high energy consumption, and drill bit is damaged, and drilling life of bit is short.
Summary of the invention
The defects that exists in order to overcome prior art the invention provides a kind of strong adaptability, and energy consumption is low, high efficiency, long service life, the rotary drilling rig bipyramid double-helix drill bit that drilling ability is strong.
Technical scheme of the present invention is: it comprises core tube and flange, described flange is located at the core tube upper end, described core tube top is the class cylinder, the core tube bottom is cone, two sides of the axial section of core tube are waveform, core tube's periphery is provided with the helical blade of two interlaced arrangements, two helical blades upper end all is connected with upper plate, two helical blade lower ends all are connected with lower plate, upper plate is fixed in core tube top, and lower plate is fixed in the core tube bottom, and two helical blade the latter halfs all are evenly equipped with sub warhead pick II, core tube lower bottom plane is provided with sub warhead pick III, and external week of described core tube lower cone is evenly equipped with sub warhead pick I.
Preferred 16 of described sub warhead pick I quantity, 16 sub warhead pick I are four column distributions, four of every row.
Two helical blade the first half should be forward type, and the latter half should be the conehead type.
Preferred three of described sub warhead pick III quantity is mutually 30～50 °.
Described sub warhead pick I, sub warhead pick II, the equal welding-on of sub warhead pick III head have tungsten-cobalt hard alloy.
The present invention combines traditional rock inserted bit with short screw and the short augers characteristics of soil layer, makes the bipyramid double-helix drill bit can not only operation in general soil layer and sandy soils, can also operation in the larger bedrock formation of hardness and erratic boulder layer.The core tube upper end is the class cylinder; two sides of axial section are waveform; the bottom is cone; this kind design has antidetonation, slows down stressed effect, and the resistance in the time of not only can reducing to creep into is beneficial to boring; reduce energy consumption; and can make the drilling tool pressure-acting in rational scope class, and be conducive to protect drill bit, increase the service life.When creeping into, the smear metal fragmentation is carried out by a contact form in the tip of sub warhead pick III, is conducive to reduce contact area, strengthens drilling ability.Simultaneously, because sub warhead pick head welding-on has tungsten-cobalt hard alloy, be conducive to increase drill bit abrasion resistance and hardness.
The present invention's rotary drilling rig bipyramid double-helix drill bit, drilling ability is strong, and compliance is good, high efficiency, energy consumption is low, and long service life can not only operation in general soil layer and sandy soils, can also operation in the larger bedrock formation of hardness and erratic boulder layer.
Description of drawings
Fig. 1 is embodiment of the invention structural representation.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
With reference to accompanying drawing, the present embodiment comprises core tube 4 and flange 5, described flange 5 is located at core tube 4 upper ends, described core tube 4 tops are the class cylinder, core tube 4 bottoms are cone, be evenly equipped with 16 sub warhead pick I 2 external week of described core tube lower cone, 16 sub warhead pick I 2 are four column distributions, four of every row, two sides of the axial section of core tube 4 are waveform, core tube's 4 peripheries are provided with the helical blade 7 of two interlaced arrangements, two helical blades, 7 the first half are forward type, the latter half is the conehead type, two helical blades, 7 upper ends all are connected with upper plate 6, two helical blades, 7 lower ends all are connected with lower plate 8, upper plate 6 is fixed in core tube 4 tops, lower plate 3 is fixed in core tube 4 bottoms, two helical blades, 7 the latter halfs all are evenly equipped with sub warhead pick II 8, core tube 4 lower bottom planes 1 are provided with three sub warhead pick III 10, three sub warhead pick III 10 are mutually 40 °, described sub warhead pick I 2, sub warhead pick II 8, the equal welding-on of sub warhead pick III 10 heads has tungsten-cobalt hard alloy.
When creeping into soil layer, sub warhead pick III 10 is carried out the smear metal fragmentation by a contact form, is conducive to reduce contact area, strengthens drilling ability.Along with going deep into of creeping into, during core tube 4 and contact with soil layer, the time and do not contact, thereby be conducive to reduce to creep into resistance, reduce energy consumption.Simultaneously, because part is the class cylindrical in the core tube 4, lower part is conoid shape, and this kind structure has antidetonation, slows down stressed effect, makes the drilling tool pressure-acting in rational scope class, thereby is conducive to protect drill bit, increases the service life.
The present invention's rotary drilling rig bipyramid double-helix drill bit, drilling ability is strong, and compliance is good, creeps into resistance little, and high efficiency can not only operation in general soil layer and sandy soils, can also operation in the larger bedrock formation of hardness and erratic boulder layer.
Claims (4)
1. rotary drilling rig bipyramid double-helix drill bit, comprise core tube and flange, described flange is located at the core tube upper end, it is characterized in that, described core tube top is the class cylinder, the core tube bottom is cone, two sides of the axial section of core tube are waveform, core tube's periphery is provided with the helical blade of two interlaced arrangements, two helical blades upper end all is connected with upper plate, two helical blade lower ends all are connected with lower plate, upper plate is fixed in core tube top, and lower plate is fixed in the core tube bottom, and two helical blade the latter halfs all are evenly equipped with sub warhead pick II, core tube lower bottom plane is provided with sub warhead pick III, and external week of described core tube lower cone is evenly equipped with sub warhead pick I;
Two helical blade the first half are forward type, and the latter half is the conehead type.
2. rotary drilling rig bipyramid double-helix drill bit according to claim 1 is characterized in that, described sub warhead pick I is 16, and 16 sub warhead pick I are four column distributions, four of every row.
3. rotary drilling rig bipyramid double-helix drill bit according to claim 1 and 2 is characterized in that, described sub warhead pick III is three, is mutually 30 °～50 °.
4. rotary drilling rig bipyramid double-helix drill bit according to claim 1 and 2 is characterized in that, described sub warhead pick I, sub warhead pick II, the equal welding-on of sub warhead pick III head have tungsten-cobalt hard alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010274498 CN102011555B (en) | 2010-09-07 | 2010-09-07 | Double-cone and double-helix drill bit for rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010274498 CN102011555B (en) | 2010-09-07 | 2010-09-07 | Double-cone and double-helix drill bit for rotary drilling rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102011555A CN102011555A (en) | 2011-04-13 |
| CN102011555B true CN102011555B (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010274498 Expired - Fee Related CN102011555B (en) | 2010-09-07 | 2010-09-07 | Double-cone and double-helix drill bit for rotary drilling rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102011555B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797254B (en) * | 2012-09-10 | 2014-08-06 | 马春根 | Construction method for bottom-expanded pile casting by long-spiral drilling and compacted half soil sampling |
| CN104594810B (en) * | 2015-02-09 | 2017-05-17 | 广西五丰机械有限公司 | Spiral bit of deep loosening cultivator |
| CN104747188B (en) * | 2015-03-26 | 2017-04-19 | 中国矿业大学 | Wavy helical blade roller |
| CN106761427A (en) * | 2016-12-28 | 2017-05-31 | 武汉武船重型装备工程有限责任公司 | One kind bores stake drilling tool |
| CN107288550B (en) * | 2017-08-18 | 2023-07-04 | 陕西圆极岩土科技发展有限公司 | Piling pore-forming drill bit suitable for hard rock soil layer |
| CN109339710B (en) * | 2018-11-28 | 2020-11-06 | 金华值益信息科技有限公司 | Spiral drill bit of rotary drilling machine with crushing function |
| CN116201484A (en) * | 2023-05-05 | 2023-06-02 | 山东省地质科学研究院 | Drill bit for tunnel drilling machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046207A (en) * | 1976-09-01 | 1977-09-06 | Thomas Lee Taylor | Earth drilling tools |
| CN2769486Y (en) * | 2004-11-26 | 2006-04-05 | 中国地质科学院勘探技术研究所 | Screw auger |
| CN201024899Y (en) * | 2007-02-15 | 2008-02-20 | 中国京冶工程技术有限公司 | Two-directional spiral sealing extrusion and expansion aiguille |
| CN201068740Y (en) * | 2007-06-06 | 2008-06-04 | 周洪生 | Conical helical rock drill head |
| CN201474612U (en) * | 2009-07-16 | 2010-05-19 | 李新桥 | Long screw toothed-club type drill for pile driver |
| CN201763248U (en) * | 2010-09-07 | 2011-03-16 | 李新桥 | Double-cone double spiral bit for rotary drill |
-
2010
- 2010-09-07 CN CN 201010274498 patent/CN102011555B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
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| CN102011555A (en) | 2011-04-13 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20110413 Assignee: CHTC JOVE Heavy Industry Co., Ltd. Assignor: Li Xinqiao Contract record no.: 2013430000107 Denomination of invention: Double-cone and double-helix drill bit for rotary drilling rig Granted publication date: 20130116 License type: Exclusive License Record date: 20130716 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150907 |
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| EXPY | Termination of patent right or utility model |