CN109083597B - Reverse expansion type composite drill bit - Google Patents
Reverse expansion type composite drill bit Download PDFInfo
- Publication number
- CN109083597B CN109083597B CN201811015936.6A CN201811015936A CN109083597B CN 109083597 B CN109083597 B CN 109083597B CN 201811015936 A CN201811015936 A CN 201811015936A CN 109083597 B CN109083597 B CN 109083597B
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- China
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- drilling tool
- connecting rod
- drill bit
- drilling
- far away
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
Abstract
The invention discloses a reverse-expanding type composite drill bit which comprises first connecting rods, mounting blocks, mounting grooves and pressure reducing holes, wherein the guide grooves are formed among the guide strips, the mounting blocks are arranged on the vertical surfaces, far away from the first connecting rods, of the second connecting rods, a second drilling tool is arranged on one side, far away from the second connecting rods, of the mounting blocks, and a fourth drilling tool is fixed on one side, far away from the mounting blocks, of the second drilling tool. The cross-section of this anti-formula composite drill bit fourth drilling tool that expands is isosceles trapezoid structure, the rock around this drill bit of fourth drilling tool contact, can ensure the width that the well drilling came out, the direct and rock contact of fourth drilling tool cutting edge, forward or reverse rotation all can play the effect of drilling, fourth drilling tool and rock contact, the phenomenon of wearing and tearing appears easily in the cutting edge of fourth drilling tool, because fourth drilling tool itself quantity is greater than the original quantity of this drill bit, the degree of wear that consequently follow-up direct contact's fourth drilling tool received reduces, reduce the degree of wear of fourth drilling tool, thereby reduce the degree of wear of whole drill bit.
Description
Technical Field
The invention relates to the technical field of raise boring machines, in particular to a reverse-expansion type composite drill bit.
Background
The technical principle of the raise boring machine is that a hydraulic motor is driven by a motor of the drilling machine, the hydraulic motor drives a water faucet, torque is transmitted to a drilling tool system by utilizing hydraulic power, a drill rod and a drill bit are driven to rotate, a hob on a guide hole drill bit or a hole expanding drill bit rolls or slightly slides along a rock working surface at the bottom of a well under the action of drilling pressure, and meanwhile, axial pulling and pressure generated by a main engine oil cylinder also act on the guide hole drill bit or the hole expanding drill bit through a power head and the drill rod, so that the hob of the guide hole drill bit rolls under the action of the drilling pressure to generate impact load, and hob teeth generate impact, extrusion and shearing actions on rocks to break the rocks.
When the raise boring machine works, the composite drill bit of the raise boring machine is used for working the rock pulp at the bottom of the well, so that when the raise boring machine works, the action of the composite drill bit is very important, and the raise boring machine comprises a hole expanding drill bit, namely a reverse expansion type composite drill bit.
Most back-reaming composite drill bits wear more heavily when in use.
Disclosure of Invention
The invention aims to provide a reverse-expansion type composite drill bit, which is used for solving the problem of serious abrasion in the current market in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a back-expansion type composite drill bit comprises a first connecting rod, an installation block, an installation groove and a pressure relief hole, wherein one side of the first connecting rod is provided with a second connecting rod, one end of the second connecting rod, which is far away from the first connecting rod, is provided with a first drilling tool, the first drilling tool is fixedly connected with the second connecting rod, wherein,
a guide strip is fixed on the vertical surface of the first drilling tool away from the second connecting rod, the guide strip and the first drilling tool are positioned on the same side of the second connecting rod, and a guide groove is formed between the guide strips;
the mounting block is arranged on the vertical surface of the second connecting rod, which is far away from the first connecting rod, a second drilling tool is arranged on one side of the mounting block, which is far away from the second connecting rod, and a fourth drilling tool is fixed on one side of the second drilling tool, which is far away from the mounting block;
the mounting groove is arranged on one side, away from the first connecting rod, of the second drilling tool, a third drilling tool is arranged on one side, away from the second drilling tool, of the mounting groove, and the pressure relief hole is formed in one side, close to the mounting block, of the second connecting rod.
Preferably, the cross section of the first drilling tool is of a semicircular structure, and the central axis of the first drilling tool is overlapped with the central axis of the second connecting rod.
Preferably, the diversion strips are of a wave-shaped structure, and the diversion direction of the diversion strips is the same as the rotation direction of the second connecting rod.
Preferably, the number of the diversion trenches is three, and the width of the opening end of each diversion trench is smaller than that between the second drilling tools.
Preferably, the cross section of the fourth drilling tool is of an isosceles trapezoid structure, and the fourth drilling tools are distributed on the second drilling tool at equal intervals.
Compared with the prior art, the invention has the beneficial effects that: this reverse-expanding composite drill bit:
1. the section of the first drilling tool is of a semicircular structure, and the first drilling tool is of a concave spherical structure, so that when the drilling tool is used, a cutter is directly formed on the concave round edge of the first drilling tool to be in contact with rock, and the contacted rock is directly shattered, so that the composite drilling tool is more comprehensively contacted with the rock, and drilling is more convenient;
2. the width of the opening end of the diversion trench is smaller than the width between the second drilling tools, the rock fragments after being shaken are directly led out between the second drilling tools, and the second drilling tools rotate at the same time to break the rock fragments again, so that the rock fragments are directly dispersed around the drill bit, the fragments are ensured not to appear in the drill bit, and the normal use of the drill bit is not influenced;
3. the cross-section of fourth drilling tool is isosceles trapezoid structure, the fourth drilling tool contacts the rock around this drill bit, can ensure the width that the well drilling came out, because the fourth drilling tool is isosceles trapezoid structure, the fourth drilling tool cutting edge is direct and the rock contact, forward or reverse rotation all can play the effect of drilling, after fourth drilling tool and rock contact, the phenomenon of wearing and tearing appears easily in the cutting edge of fourth drilling tool, because fourth drilling tool itself quantity is greater than the original quantity of this drill bit, consequently, the degree of wear that follow-up direct contact's fourth drilling tool received reduces, reduce the degree of wear of fourth drilling tool, thereby reduce the degree of wear of whole drill bit.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2 according to the present invention.
In the figure: 1. the drilling tool comprises a first connecting rod, a second connecting rod, a first drilling tool, a second drilling tool, a third drilling tool, a fourth drilling tool, a pressure reducing hole, a first connecting rod, a second connecting rod, a third drilling tool, a flow guide strip, a second connecting rod, a third connecting rod, a fourth connecting rod, a third connecting rod, a flow guide groove, a fourth connecting rod, a flow guide groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a reverse-expanding type composite drill bit comprises a first connecting rod 1, a second connecting rod 2, a first drilling tool 3, a guide strip 4, a guide groove 5, an installation block 6, a second drilling tool 7, an installation groove 8, a third drilling tool 9, a fourth drilling tool 10 and a pressure relief hole 11, wherein the second connecting rod 2 is arranged on one side of the first connecting rod 1, the first drilling tool 3 is arranged at one end, away from the first connecting rod 1, of the second connecting rod 2, the cross section of the first drilling tool 3 is of a semicircular structure, the central axis of the first drilling tool 3 is overlapped with the central axis of the second connecting rod 2, a cutter is directly formed on the round edge of the first drilling tool 3 when the composite drill bit is used and is directly contacted with rocks, the central part of the drill bit cannot be directly impacted by the rocks when the composite drill bit is used, the composite drill bit is ensured to be more comprehensively contacted with the rocks, and the first drilling tool 3 is fixedly connected with the second, wherein the content of the first and second substances,
the vertical surface of the first drilling tool 3, which is far away from the second connecting rod 2, is fixed with guide strips 4, the guide strips 4 are of a wave structure, the guide direction of the guide strips 4 is the same as the rotating direction of the second connecting rod 2, when the guide strips 4 are used, the guide strips 4 limit the moving direction of shattered rock fragments, the rock fragments are guaranteed to be directly limited to be led out at the inner side of the guide groove 5, the fragments are more conveniently led out, the guide strips 4 and the first drilling tool 3 are positioned at the same side of the second connecting rod 2, guide grooves 5 are arranged between the guide strips 4, the number of the guide grooves 5 is three, the width of the opening end of the guide groove 5 is smaller than that of the second drilling tool 7, the shattered rock fragments are directly cleaned out along the guide direction of the guide groove 5, the fragments are guaranteed not to be led out of the inside of the drill bit, and the normal use of the drill, the inner side of the drill bit is ensured not to generate fragments;
the mounting block 6 is arranged on a vertical plane of the second connecting rod 2 far away from the first connecting rod 1, one side of the mounting block 6 far away from the second connecting rod 2 is provided with a second drilling tool 7, one side of the second drilling tool 7 far away from the mounting block 6 is fixedly provided with a fourth drilling tool 10, the section of the fourth drilling tool 10 is of an isosceles trapezoid structure, the fourth drilling tools 10 are distributed on the second drilling tool 7 at equal intervals, when the fourth drilling tool is in direct contact with rock, the fourth drilling tool 10 is of the isosceles trapezoid structure, two sides of the fourth drilling tool 10 are both cutting edges of a drilling bit and can be in direct contact with the rock, after the fourth drilling tool 10 is in contact with the rock, the cutting edge of the fourth drilling tool 10 is easy to wear, the fourth drilling tool 10 is continuously expanded inwards, so that the cutting edge of the fourth drilling tool 10 is extended forwards, the normal use of the composite drilling tool is not influenced, and the;
the mounting groove 8 is formed in one side, away from the first connecting rod 1, of the second drilling tool 7, the third drilling tool 9 is arranged on one side, away from the second drilling tool 7, of the mounting groove 8, and the pressure reducing hole 11 is formed in one side, close to the mounting block 6, of the second connecting rod 2.
The working principle is as follows: when the reverse expansion type composite drill bit is used, firstly, the first connecting rod 1 and a reverse drilling machine are connected, the reverse expansion type composite drill bit starts to work on a rock part under the driving of the reverse drilling machine, when a well is continuously drilled downwards, the first connecting rod 1 drives the second connecting rod 2 and the mounting block 6 to rotate, the first drilling tool 3 and the third drilling tool 9 on the inner side of the mounting groove 8 are firstly contacted with the rock part, when the rock is contacted, because the first drilling tool 3 is of an inwards concave circular structure, the edge of the first drilling tool 3 directly strikes and crushes the rock, after the rock is crushed, the fragments of the rock are directly led out of the outer side of the drill bit through the diversion grooves 5 between the diversion strips 4, meanwhile, the third drilling tool 9 continuously rotates and expands outwards to continuously drill the well, because the fourth drilling tool 10 on the outer side of the second drilling tool 7 is of an isosceles trapezoid structure, when the rock is contacted, the cutting edge of the fourth drilling tool 10 is continuously expanded inwards after being worn, the service life of the drill bit is not affected, the service life of the drill bit is prolonged, meanwhile, the strength of the fourth drilling tool 10 is increased, when the pressure reducing hole 11 works in the drilling process, the pressure of the mounting block 6 is reduced by the pressure reducing hole 11, the phenomenon that the mounting block 6 is broken is avoided, and the content which is not described in detail in the description belongs to the prior art which is known by professional technicians in the field.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (1)
1. The utility model provides a reverse-expanding composite drill bit, includes head rod (1), installation piece (6), mounting groove (8) and pressure relief vent (11), one side of head rod (1) is provided with second connecting rod (2), the one end that head rod (1) was kept away from in second connecting rod (2) is provided with first drilling tool (3), be fixed connection, its characterized in that between first drilling tool (3) and second connecting rod (2): a flow guide strip (4) is fixed on the vertical surface of the first drilling tool (3) far away from the second connecting rod (2), the flow guide strip (4) and the first drilling tool (3) are positioned on the same side of the second connecting rod (2), and a flow guide groove (5) is formed between the flow guide strips (4); the mounting block (6) is arranged on the vertical surface of the second connecting rod (2) far away from the first connecting rod (1), a second drilling tool (7) is arranged on one side of the mounting block (6) far away from the second connecting rod (2), and a fourth drilling tool (10) is fixed on one side of the second drilling tool (7) far away from the mounting block (6); the mounting groove (8) is formed in one side, away from the first connecting rod (1), of the second drilling tool (7), a third drilling tool (9) is arranged on one side, away from the second drilling tool (7), of the mounting groove (8), and the pressure reducing hole (11) is formed in one side, close to the mounting block (6), of the second connecting rod (2); the section of the first drilling tool (3) is of a semicircular structure, and the central axis of the first drilling tool (3) is superposed with the central axis of the second connecting rod (2); the number of the guide grooves (5) is three, and the width of the opening end of each guide groove (5) is smaller than that of the second drilling tools (7); the flow guide strips (4) are of a wave-shaped structure, and the flow guide direction of the flow guide strips (4) is the same as the rotation direction of the second connecting rod (2); the section of the fourth drilling tool (10) is of an isosceles trapezoid structure, and the fourth drilling tools (10) are distributed on the second drilling tool (7) at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015936.6A CN109083597B (en) | 2018-09-01 | 2018-09-01 | Reverse expansion type composite drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015936.6A CN109083597B (en) | 2018-09-01 | 2018-09-01 | Reverse expansion type composite drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109083597A CN109083597A (en) | 2018-12-25 |
| CN109083597B true CN109083597B (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811015936.6A Active CN109083597B (en) | 2018-09-01 | 2018-09-01 | Reverse expansion type composite drill bit |
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| Country | Link |
|---|---|
| CN (1) | CN109083597B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2179618C2 (en) * | 2000-04-24 | 2002-02-20 | Открытое акционерное общество "Саратовнефтегаз" | Hole reamer |
| CN101025076A (en) * | 2006-02-21 | 2007-08-29 | 霍利贝顿能源服务公司 | Roller cone drill bit with enhanced debris diverter grooves |
| KR101132704B1 (en) * | 2011-07-11 | 2012-04-02 | (주)세종이엔씨 | Excavating bit structure available expands the hollow in the base rock |
| CN203257332U (en) * | 2013-05-07 | 2013-10-30 | 魏常耕 | Combined reamer bit |
| CN203905815U (en) * | 2014-02-21 | 2014-10-29 | 西南石油大学 | Double-core reaming bit with multiple stages of reaming bodies |
| CN205422545U (en) * | 2016-03-18 | 2016-08-03 | 山东省城乡建设勘察设计研究院 | Novel combined drill |
| CN106089086A (en) * | 2016-08-02 | 2016-11-09 | 西南石油大学 | A kind of bad ground long-life re-drill bit |
| CN206267796U (en) * | 2016-12-02 | 2017-06-20 | 西北大学 | A kind of oil exploitation drill bit |
-
2018
- 2018-09-01 CN CN201811015936.6A patent/CN109083597B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2179618C2 (en) * | 2000-04-24 | 2002-02-20 | Открытое акционерное общество "Саратовнефтегаз" | Hole reamer |
| CN101025076A (en) * | 2006-02-21 | 2007-08-29 | 霍利贝顿能源服务公司 | Roller cone drill bit with enhanced debris diverter grooves |
| KR101132704B1 (en) * | 2011-07-11 | 2012-04-02 | (주)세종이엔씨 | Excavating bit structure available expands the hollow in the base rock |
| CN203257332U (en) * | 2013-05-07 | 2013-10-30 | 魏常耕 | Combined reamer bit |
| CN203905815U (en) * | 2014-02-21 | 2014-10-29 | 西南石油大学 | Double-core reaming bit with multiple stages of reaming bodies |
| CN205422545U (en) * | 2016-03-18 | 2016-08-03 | 山东省城乡建设勘察设计研究院 | Novel combined drill |
| CN106089086A (en) * | 2016-08-02 | 2016-11-09 | 西南石油大学 | A kind of bad ground long-life re-drill bit |
| CN206267796U (en) * | 2016-12-02 | 2017-06-20 | 西北大学 | A kind of oil exploitation drill bit |
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| Publication number | Publication date |
|---|---|
| CN109083597A (en) | 2018-12-25 |
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Address after: 273500 west of middle section of West Outer Ring Road, Zoucheng City, Jining City, Shandong Province Patentee after: Shandong Yanneng Taide Heavy Industry Co.,Ltd. Address before: 273500 west of middle section of West Outer Ring Road, Zoucheng City, Jining City, Shandong Province Patentee before: ZOUCHENG YANKUANG TAIDE INDUSTRY & TRADE Co.,Ltd. |