CN102011553A - Double-helix drill bit of rotary drilling rig - Google Patents
Double-helix drill bit of rotary drilling rig Download PDFInfo
- Publication number
- CN102011553A CN102011553A CN2010102740996A CN201010274099A CN102011553A CN 102011553 A CN102011553 A CN 102011553A CN 2010102740996 A CN2010102740996 A CN 2010102740996A CN 201010274099 A CN201010274099 A CN 201010274099A CN 102011553 A CN102011553 A CN 102011553A
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- drill bit
- screw thread
- double helix
- drilling rig
- rotary drilling
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Abstract
The invention discloses a double-helix drill bit of a rotary drilling rig, which comprises a drill bit body. The tail end of the drill bit body is provided with a square head; the front end is provided with a conical head; the drill bit body between the square head and the conical head is provided with a thread; a front section of the thread is provided with two double helix threads with consistent rotation direction; and the tail end section of the thread is provided with a single thread with the same rotation direction to that of the double helix threads. The double-helix drill bit can be used for positioning correctly, has the advantages of quick positioning speed, quick drilling speed and good adaptability to construction environment condition, and can be used in work conditions with different geological conditions.
Description
Technical field
The present invention relates to a kind of rotary drilling rig drill bit, especially relate to a kind of rotary drilling rig double helix drill bit.
Background technology
Rotary drilling rig is modern to build common drill-pouring construction machinery in the construction field, and one of critical component of rig is exactly a drill bit, and whether drill bit structure is reasonable, and energy consumption, operating efficiency and the construction quality of whole rig had decisive influence.Existing rotary drilling rig drill bit adopts equidistant tapered thread, and when the chisel edge rate of penetration was restricted, the rear end screw thread just can not be not fully exerted to the transport capability that drills through thing, influences the operating efficiency of complete machine.
Summary of the invention
At the existing above-mentioned weak point of existing drill bit, it is fast to the invention provides a kind of rate of penetration, accurate positioning, the rotary drilling rig double helix drill bit of high efficiency.
Technical scheme of the present invention is, it comprises drill body, the drill body end is provided with square spigot, front end is provided with conical head, drill body between square spigot and the conical head is provided with screw thread, the screw thread leading portion is the double helix screw thread of two direction of rotation unanimities, and latter end is and the identical single thread of double helix screw thread rotation direction.
It below is further improved preferred version.
The spiral groove depth of described screw thread increases to end gradually from the front end of drill bit, near pitch of front end with near the growth of a terminal pitch than being 1.2-2.
The length of described pair of thread segment accounts for the 1/4-1/2 of whole drill body length.
The screw thread edge that described drill body leading portion accounts for full flight length 1/3-2/3 is processed with the tooth cover, and the tooth cover is 2-5cm along the circumferential spacing of screw thread, and tooth puts and is equipped with and the cutting teeth that is threaded.
The cone angle of described conical head is the 30-90 degree, and conical head is processed with the tooth cover near threaded portion, and cutting teeth is installed.
The angle of described cutting teeth and drill body cross section is the 30-80 degree, and the tangential direction the when axis direction of cutting teeth and motion on the circumference of screw thread is 0-30 degree angle.
The conical head of drill body front end of the present invention can be realized locating rapidly and accurately of drill bit, and to harder geology operating mode, conical head can creep into rapidly simultaneously, accelerates whole rate of penetration; Two screw threads of front end and fine pitch make the application point of front end increase, and accelerate the fragmentation to soil or stone, and the widely-pitched of rear end and single thread then help drilling through transporting of thing, thereby effectively improve the whole drilling efficiency of drill bit.
Accurate positioning of the present invention, locating speed is fast, and rate of penetration is fast, and is good to construction environment condition compliance, all can use the operating mode of different geological conditionss.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
The specific embodiment
The present invention is further elaborated below in conjunction with the drawings and specific embodiments:
With reference to Fig. 1, present embodiment comprises drill body, the drill body end is provided with square spigot 1, front end is provided with conical head 5, drill body between square spigot 1 and the conical head 5 is provided with screw thread 2, screw thread 2 front ends are the double helix screw thread of two direction of rotation unanimities, terminal single thread for having identical direction of rotation, and the ratio that two thread segment length account for whole drill body length is 0.4; The spiral groove depth of screw thread 2 increases to end gradually from the front end of drill body, is 1.5 near pitch of front end with growth ratio near a terminal pitch; Screw thread 2 edges that the drill body leading portion accounts for full flight length 1/3 are processed with tooth cover 3, and tooth cover 3 is 3cm along screw thread 2 circumferential spacings, and tooth overlaps on 3 the cutting teeth 4 that is connected with screw thread 2 is installed; The cone angle of conical head 5 is 60 degree; Cutting teeth 4 is 60 degree with the angle of drill body cross section, and the tangential direction the when axis direction of cutting teeth 4 and work on the circumference of drilling direction screw thread 2 is 10 degree angles.
The conical head 5 of drill body front end of the present invention can be realized locating rapidly and accurately of drill bit, and to harder geology operating mode, conical head 5 can creep into rapidly simultaneously, accelerates whole rate of penetration; Two screw threads of screw thread 2 front portions and fine pitch make the application point of front end increase, and accelerate the fragmentation to soil or stone, and the widely-pitched at rear portion and single thread then help drilling through transporting of thing, thereby have effectively improved the whole drilling efficiency of drill bit.
The present invention is good to construction environment condition compliance, and the operating mode of different geological conditionss all can be used.
Claims (6)
1. rotary drilling rig double helix drill bit, comprise drill body, the drill body end is provided with square spigot, front end is provided with conical head, drill body between square spigot and the conical head is provided with screw thread, the screw thread leading portion is the double helix screw thread of two direction of rotation unanimities, and latter end is and the identical single thread of double helix screw thread rotation direction.
2. rotary drilling rig double helix drill bit according to claim 1, it is characterized in that: the spiral groove depth of screw thread increases to end gradually from the front end of drill bit, near pitch of front end with near the growth of a terminal pitch than being 1.2-2.
3. according to claim 1 or 2 described rotary drilling rig double helix drill bits, it is characterized in that: the length of two thread segments accounts for the 1/4-1/2 of whole drill body length.
4. rotary drilling rig double helix drill bit according to claim 1 and 2, it is characterized in that: the screw thread edge that described drill body leading portion accounts for full flight length 1/3-2/3 is processed with the tooth cover, the tooth cover is 2-5cm along the circumferential spacing of screw thread, and tooth puts and is equipped with and the cutting teeth that is threaded.
5. rotary drilling rig double helix drill bit according to claim 1 and 2 is characterized in that: the cone angle of conical head is the 30-90 degree, and conical head is processed with the tooth cover near threaded portion, and cutting teeth is installed.
6. rotary drilling rig double helix drill bit according to claim 4 is characterized in that: the angle of described cutting teeth and drill body cross section is the 30-80 degree, and the tangential direction the when axis direction of cutting teeth and motion on the circumference of screw thread is 0-30 degree angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102740996A CN102011553A (en) | 2010-09-07 | 2010-09-07 | Double-helix drill bit of rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102740996A CN102011553A (en) | 2010-09-07 | 2010-09-07 | Double-helix drill bit of rotary drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102011553A true CN102011553A (en) | 2011-04-13 |
Family
ID=43841863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102740996A Pending CN102011553A (en) | 2010-09-07 | 2010-09-07 | Double-helix drill bit of rotary drilling rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102011553A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046544A (en) * | 2013-01-25 | 2013-04-17 | 汤保新 | Spinning pile, spinning pile waist and spinning pile head |
| CN103782690A (en) * | 2014-02-07 | 2014-05-14 | 衢州市煜鑫农产品加工技术开发有限公司 | Special hole digger for planting |
| CN104265179A (en) * | 2014-09-18 | 2015-01-07 | 河南科技大学 | Drill bit of variable-curvature screw pile driver |
Citations (7)
| 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 |
| CN200958367Y (en) * | 2006-09-06 | 2007-10-10 | 中国人民解放军63983部队 | Composite drilling bit |
| 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 |
| CN201326376Y (en) * | 2008-08-20 | 2009-10-14 | 萧守让 | Multi-functional hydraulic rotary-digging drilling machine |
| CN201763250U (en) * | 2010-09-07 | 2011-03-16 | 李新桥 | Double spiral bit for rotary drill |
-
2010
- 2010-09-07 CN CN2010102740996A patent/CN102011553A/en active Pending
Patent Citations (7)
| 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 |
| CN200958367Y (en) * | 2006-09-06 | 2007-10-10 | 中国人民解放军63983部队 | Composite drilling bit |
| 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 |
| CN201326376Y (en) * | 2008-08-20 | 2009-10-14 | 萧守让 | Multi-functional hydraulic rotary-digging drilling machine |
| CN201763250U (en) * | 2010-09-07 | 2011-03-16 | 李新桥 | Double spiral bit for rotary drill |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046544A (en) * | 2013-01-25 | 2013-04-17 | 汤保新 | Spinning pile, spinning pile waist and spinning pile head |
| CN103046544B (en) * | 2013-01-25 | 2015-07-15 | 汤保新 | Spinning pile, spinning pile waist and spinning pile head |
| CN103782690A (en) * | 2014-02-07 | 2014-05-14 | 衢州市煜鑫农产品加工技术开发有限公司 | Special hole digger for planting |
| CN104265179A (en) * | 2014-09-18 | 2015-01-07 | 河南科技大学 | Drill bit of variable-curvature screw pile driver |
| CN104265179B (en) * | 2014-09-18 | 2016-07-13 | 河南科技大学 | A kind of variable curvature screw pile driver drill bit |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110413 |