CN87100397A - Erosion resistant rock drill bit - Google Patents
Erosion resistant rock drill bit Download PDFInfo
- Publication number
- CN87100397A CN87100397A CN87100397.XA CN87100397A CN87100397A CN 87100397 A CN87100397 A CN 87100397A CN 87100397 A CN87100397 A CN 87100397A CN 87100397 A CN87100397 A CN 87100397A
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- CN
- China
- Prior art keywords
- drills
- stone
- hard alloy
- abaculus
- drill bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Earth Drilling (AREA)
Abstract
The present invention has disclosed a kind of down-the-hole erosion resistant bull bit, and this drill bit utilization is around the radial distribution hard alloy cutting bit or the circle abaculus of tap.Can reduce the washing away of hard alloy, or with insert the wearing down of base metal of location of hard alloy, to prolong bit life.
Description
The present invention is relevant to be mainly used in shot hole, well, and oil wells etc. bore the rock bit of rock.
Recently carbide alloy is inserted and the improvement of the design of rock bit, increase diameter ball abaculus (gaug buttons) and (for example used the length abaculus, two diameters capable (double gauge row), bullet sclerosis hole (shot peened holes) etc.) life-span, cause main failure mode, concentrate on the surface of abaculus (button).Often effects on surface washes away the suitable support that has worn down abaculus, and supporting force last so that hard alloy circle abaculus weakens, and even the abaculus damage, even loses.
The present invention advocates, and is the hard alloy cutting such as hard alloy circle abaculus is inserted, and radially outward distributes from tap.Can prevent that like this effluent from freely washing away stream, carry and grind rock particles around the base metal process of hard alloy.
Therefore, purpose of the present invention is that flow path is washed away in the nothing constraint that prevents to insert towards hard alloy.
Another object of the present invention is to form a desirable flush path, and discord hard alloy circle abaculus position approaches.
And the another one purpose provides a kind of fabricating cost economy, the hard alloy cutting bit of long service life.
Why above-mentioned purpose and other purposes can obtain, and being has the following in the hard alloy circle abaculus drill bit:
A main body, longitudinal axis are parallel to drilling direction and stretch;
A leading edge that is arranged in main body the place ahead or main body, the surface vertical with the main body longitudinal axis;
Lip-deep one supplies source point, is connected the source to connect with pressure fluid;
Some cutter sweeps as Rock cutting arrange from the teeth outwards, and the tab sequencial of cutter sweep is from supplying radially line stretching, extension arrangement of source point.
Fig. 1 denudes overlooking of hard alloy circle abaculus drill bit for having earlier in the skill field.
Fig. 2 overlooks for hard alloy circle abaculus drill bit of the present invention.
Fig. 3 hard alloy circle of the present invention abaculus drill bit forward sight.
At first referring to the embodiment that has earlier in the skill field shown in Figure 1.Typical case's abrasion shape is shown in the bit face dash area.Because hard alloy circle abaculus on bit face, is centered on the discharge orifice arranged radially, so the present invention can reduce abrasion as far as possible.So just, can provide on the one hand a free flow path, and form as far as possible on the other hand the restriction of some flow paths, promote between the circle abaculus circulation but not by the circulation of circle abaculus.
Specifically referring to Fig. 2, the integral body of diagram drill main body represents with the number of marking on a map 100.
The longitudinal axis of main body is parallel with drilling direction 20, and leading edge has surface portion and inclination (that is slope) part.A diameter parts concentric with axis is arranged, form periphery, and the cadre, this cadre stretches backward, forms the leading edge that is connected with the rig (not shown).
Bit face indicates that with the number of marking on a map 1 bit diameter section indicates that with 2 the drill bit ramp is masked as 3, links to each other with surface and diameter portion.From Fig. 2 as seen, surface circle abaculus represents that with 4 the diameter circle abaculus is 5, and the middle circle abaculus is masked as 6.Tap 7 big sections and ramp 3 communicate, and row unloads groove 8 and stretches to surface 1, and stretches in the above.
Also be provided with seven peripheral incisions 9 on the cutting bit diameter portion 2, convenient fluid and/or the drilling mud of discharging arrives the drill bit back from tap, flows to drill string, flows out boring along the drill string (not shown) at last, and mode is crept into identical with traditional down-the-hole.
Round abaculus of the present invention or hard alloy cutting bit are inserted, from the tap arranged radially.Dotted line 10 expression extend radially lines.Therefore discharging fluid can not interruptedly pass through between circle abaculus ranks, and simultaneously, hard alloy circle abaculus enrank stops circulation.Its effect is to reduce the abrasion of base metal in the circle abaculus district, thus the complete sum life-span that keeps the circle abaculus to install.
Referring to Fig. 3, the forward sight of diagram cutting bit.As seen from the figure, drill bit also is provided with a cadre 11, in order to engage with the rig (not shown).Be fixed on the bit on the rig, and/or accept impact, grind also/or smash rock below the drill bit.The fragment that forms like this can be used such as air by known traditional drilling well skill, and the pressure fluids such as drilling mud or water are gone out from the hole.
Though the invention to me as above illustrates, yet the practician in this skill field may be susceptible to the numerous variations of concrete arrangement, except that as the authenticator of claims institute, and the attempt of unrestricted my invention scope.
Claims (7)
1, be used for it is characterized in that rear end fixed reamer head on a rig following:
The main body of its longitudinal axis and drilling direction extends parallel;
A leading edge that is arranged in this main body, the surface vertical with this longitudinal axis of this main body;
This lip-deep one supplies source point and pressure fluid to be connected for the source;
Some cutter sweeps that carry out Rock cutting are arranged on this surface, and arrangement mode is for radially to arrange from this feed point.
2, such as the drills for stone in the claim 1, it is characterized by this pressure fluid is drilling mud.
3, such as the drills for stone in the claim 1, it is characterized by this pressure fluid is air.
4, such as the drills for stone in the claim 1, it is characterized by this cutter sweep is that hard alloy is inserted.
5, such as the drills for stone in the claim 1, it is characterized by this cutter sweep for being arranged on this surface, the hard alloy that centers on the diameter portion periphery of this drill bit is inserted.
6, such as the drills for stone in the claim 1, it is characterized by this confession source point and be provided with direct pressurized fluid by the device of desirable direction by this surface.
7, such as the drills for stone in the claim 6, this device that it is characterized by direct pressurized fluid comprises that one is vertical with this axis, the horizontal chute of master that shoals gradually and extend from this confession source point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100397 CN1011322B (en) | 1987-01-20 | 1987-01-20 | Erosion resistant rock drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100397 CN1011322B (en) | 1987-01-20 | 1987-01-20 | Erosion resistant rock drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87100397A true CN87100397A (en) | 1988-08-03 |
| CN1011322B CN1011322B (en) | 1991-01-23 |
Family
ID=4812852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87100397 Expired CN1011322B (en) | 1987-01-20 | 1987-01-20 | Erosion resistant rock drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011322B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101023240B (en) * | 2004-09-21 | 2013-03-27 | 山特维克知识产权股份有限公司 | Rock drill bit |
| CN103930640A (en) * | 2011-11-11 | 2014-07-16 | 山特维克知识产权股份有限公司 | Drill bit for rock drilling tool, and rock drilling tool |
| CN109779522A (en) * | 2019-01-04 | 2019-05-21 | 山东浩洲地热工程有限公司 | A kind of Novel tractor water drilling rig |
| CN110520597A (en) * | 2017-04-24 | 2019-11-29 | 山特维克知识产权股份有限公司 | Cutting apparatus |
-
1987
- 1987-01-20 CN CN 87100397 patent/CN1011322B/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101023240B (en) * | 2004-09-21 | 2013-03-27 | 山特维克知识产权股份有限公司 | Rock drill bit |
| CN103930640A (en) * | 2011-11-11 | 2014-07-16 | 山特维克知识产权股份有限公司 | Drill bit for rock drilling tool, and rock drilling tool |
| CN103930640B (en) * | 2011-11-11 | 2016-10-05 | 山特维克知识产权股份有限公司 | Rock drilling instrument and the drill bit for rock drilling instrument |
| CN106285489A (en) * | 2011-11-11 | 2017-01-04 | 山特维克知识产权股份有限公司 | Rock drilling instrument and the drill bit for rock drilling instrument |
| CN106285489B (en) * | 2011-11-11 | 2019-07-23 | 山特维克知识产权股份有限公司 | Rock drilling tool and drill bit for rock drilling tool |
| CN110520597A (en) * | 2017-04-24 | 2019-11-29 | 山特维克知识产权股份有限公司 | Cutting apparatus |
| CN110520597B (en) * | 2017-04-24 | 2022-02-11 | 山特维克知识产权股份有限公司 | Cutting apparatus |
| CN109779522A (en) * | 2019-01-04 | 2019-05-21 | 山东浩洲地热工程有限公司 | A kind of Novel tractor water drilling rig |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1011322B (en) | 1991-01-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |