CN208430975U - A kind of long-life single rock bit - Google Patents
A kind of long-life single rock bit Download PDFInfo
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- CN208430975U CN208430975U CN201820900850.0U CN201820900850U CN208430975U CN 208430975 U CN208430975 U CN 208430975U CN 201820900850 U CN201820900850 U CN 201820900850U CN 208430975 U CN208430975 U CN 208430975U
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Abstract
The utility model relates to petroleum gases, mine engineering, building foundation engineering construction, geology, the drilling equipments technical field such as hydrology, a kind of long-life single rock bit is disclosed, including bit leg and rotational installation in the gear wheel of bit leg front end, several fixed cutting wings are fixedly installed in the outer surface of the gear wheel, cutting tooth is provided on the fixed cutting wing, all cutting tooths form at least two groups cutting tooth group, it can be rotated around the pivot center of the gear wheel in projection to same cutting contour line with the cutting tooth tip in group cutting tooth group, cutting contour line can form the cutwork face of each group cutting tooth group around the pivot axis of gear wheel, the height in each cutwork face is different, to form lamination cutwork.The utility model, which can form lamination, to be scraped and cuts through rock, while increasing drill bit efficiency of breaking rock, moreover it is possible to extend the service life of drill bit.
Description
Technical field
The utility model relates to the probings such as petroleum gas, mine engineering, building foundation engineering construction, geology, the hydrology to set
Standby technical field, in particular to a kind of long-life single rock bit.
Background technique
Rock bit and PDC drill bit are common drill bits in drilling engineering in drilling engineering.Single cone in rock bit
Drill bit creeps into deep-well and small size wellbore in mud motor and plays an important role.
Single-cone rotary drill bit mainly using the tooth on gear wheel to the extruding of rock, scrape and cut effect fractured rock, lateral incision energy
Power is by force and the time of contact adjustable extent of rock is big, suitable for running under high bit pressure low speed state.Single cone tooth is usual
The flute profile used has the hard-metal inserts such as chisel teeth, scoop chisel insert, hemi-spherical ended shape insert.It is this hard in hard formation and high abrasive stratum
The wear-out life of matter alloy tooth is shorter, simultaneously because the gear wheel space region Bu Chi is limited, causes gear wheel tooth advanced wear, shadow
Ring average rate of penetration and service life of the single-cone rotary drill bit in hard formation and high abrasive stratum.Therefore, abrasive resistant is studied
Property strong, rock adaptability more extensively, the better single-cone rotary drill bit of cloth tooth coverage rate, be not only to improve single-cone rotary drill bit and use the longevity
The task of top priority of life and the speed-raising of Slim Hole Sidetracking Technology and deep-well, and have important reference price to the research of related discipline from now on
Value.
Utility model content
The goal of the invention of the utility model is: in view of the above problems, a kind of long-life single rock bit is provided,
It lamination can be formed scrapes and cut through rock, while increasing drill bit efficiency of breaking rock, moreover it is possible to extend the service life of drill bit.
The technical solution adopted in the utility model is such that a kind of long-life single rock bit, including bit leg and turns
The dynamic gear wheel for being installed on bit leg front end is fixedly installed with several fixed cutting wings, the fixation in the outer surface of the gear wheel
Cutting tooth is provided on cutting wing, all cutting tooths form at least two groups cutting tooth group, with the cutting tooth organized in cutting tooth group
Top can be rotated around the pivot center of the gear wheel in projection to same cutting contour line, rotation of the cutting contour line around gear wheel
Axis rotates the cutwork face that can form each group cutting tooth group, and the height in each cutwork face is different, to form lamination
Cutwork.Rock is cut through so set, lamination can be formed and scraped, after the cutting odontotripsis of upper layer cutting tooth group, lower layer's cutting tooth group
Cutting tooth take over work, while increasing drill bit efficiency of breaking rock, moreover it is possible to extend the service life of drill bit.
Further, belong to the cutting tooth tip with group cutting tooth group in same cutting profile on all fixed cutting wings
Rotation projection on line covers whole cutting contour line.So set, guaranteeing each each cutting tooth seamless connection with group, avoid same
Leakage cutting gap is formed between the adjacent cutting tooth of group.
A kind of long-life single rock bit described in the utility model, each fixation, which cuts to all have on wing, to be adhered to separately
In each cutting tooth group cutting tooth and belong to the cutting tooth of each cutting tooth group and be at least one.So set, guaranteeing each solid
Surely the corresponding cutting tooth with each cutting tooth group of cutting wing, guarantees the working efficiency of whole cutting tooth.
A kind of long-life single rock bit described in the utility model, every group of cutting tooth group respectively correspond a cutting profile
Line with the cutting tooth group of rockwork is first leading cutting tooth group in two adjacent groups cutting tooth group, afterwards with the cutting of rockwork
Tooth group is lower layer's cutting tooth group, and the cutting contour line height difference value of two adjacent cutting tooth groups is r, in same fixed cutting wing,
The minimum effectively working depth for belonging to the cutting tooth of leading cutting tooth group is h, wherein 0 < r≤h.So set, can maximum limit
Degree ground guarantees upper layer cutting tooth group and lower layer's cutting tooth group seamless connection work.
A kind of long-life single rock bit described in the utility model, the cutting tooth are hard-metal insert, PDC tooth, axe
At least one of type tooth and tapered teeth.
Further, cutting tooth is in one or both of hard-metal insert and PDC tooth and axe type tooth and tapered teeth
One or two.So set, increasing the mode of rock bit broken rock, make the fractured rock mode of original single cone from punching
It hits and crushes+scrape shear turn to impact crush+to scrape and cut+multi-form the fractured rock of plow, be conducive to the efficiency of breaking rock for improving drill bit, together
When make single cone be adapted to formation volumes expansion.
A kind of long-life single rock bit described in the utility model, the circumferential offset folder of fixed cutting wing (3)
Angle is α, wherein 0 ° of α≤5 ° <.
A kind of long-life single rock bit described in the utility model, the fixed cutting wing is ellipse, stairstepping
Or waveform.So set, increasing the cloth tooth coverage rate on gear wheel.
A kind of long-life single rock bit described in the utility model, fixed continuous whole cover with collapsing of cutting wing set
It is placed on the gear wheel.So set, the bonding strength of fixed cutting wing and gear wheel can be increased.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, the fixed cutting wing on gear wheel can be very good to solve the problems, such as that the gear wheel space region Bu Chi is limited, increase tooth
Take turns cloth tooth coverage rate.
2, different on fixed cutting wing to organize fixed cutting tooth working face not on same spherical surface, but a kind of stack process
Mode fractured rock, after odontotripsis is cut on two adjacent groups cutting tooth upper layer, lower layer's cutting tooth group can be with new cutting dentation
State continues fractured rock, keeps the rate of penetration of drill bit, extends the service life of drill bit.
3, it is broken to increase rock bit using the flexible combination of hard-metal insert, PDC tooth, axe type tooth and tapered teeth for drill bit
The mode of rock crushes the fractured rock mode of original single cone from impact+scrape shear turn to impact crush+scrape cut+plow is more
Form fractured rock is conducive to the efficiency of breaking rock for improving drill bit, while single cone being made to be adapted to formation volumes expansion, can be with
Applied to hard formation and high abrasive stratum.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1；
Fig. 2 is the cooperation schematic diagram of fixed cutting wing and cutting tooth in the utility model embodiment 1；
Fig. 3 is the angular compliance schematic diagram of fixed cutting wing and gear wheel pivot center in the utility model；
Fig. 4 is the cooperation schematic diagram of fixed cutting wing and cutting tooth in embodiment 2 in the utility model；
Fig. 5 is the structural schematic diagram of the utility model embodiment 3；
Fig. 6 is the cooperation schematic diagram of fixed cutting wing and cutting tooth in the utility model embodiment 3；
Marked in the figure: 1 is bit leg, 2 be gear wheel, and 3 be fixed cutting wing, and 4 be cutting tooth, and 5 be cutter profile line.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Embodiment 1
As shown in Figures 1 to 3, a kind of long-life single rock bit, including bit leg 1 and rotational installation in 1 front end of bit leg
Gear wheel 2 is fixedly installed with several fixed cutting wings 3 in the outer surface of gear wheel 2, and the fixed cutting specific welding-on of wing 3 is in gear wheel 2
Outer surface, fixed cutting wing 3 are ellipse, stairstepping or waveform, and the present embodiment 1 is specifically configured to stairstepping, and
The spherical surface of gear wheel 2 forms four skew curves, and every skew curve is fixed cutting wing 3 by several and formed；
It is provided with cutting tooth 4 on fixed cutting wing 3, there is installation recess on fixed cutting wing 3, cutting tooth 4 is fixed
It is installed in installation recess, the installation of cutting tooth can be facilitated to fix, more specification is reliable, and cutting tooth 4 is hard-metal insert, PDC
At least one of tooth, axe type tooth and tapered teeth, specifically, cutting tooth 4 are one of hard-metal insert and PDC tooth or two
Kind and one or both of axe type tooth and tapered teeth, the present embodiment 1 specifically install three on each fixed cutting wing 3
A cutting tooth 4 is respectively set to axe type tooth, PDC tooth and tapered teeth；
All cutting tooths 4 on gear wheel 2 form at least two groups cutting tooth group, with each cutting tooth (4) organized in cutting tooth group
Top can be rotated around the pivot center of gear wheel 2 in projection to same cutting contour line, rotation axis of the cutting contour line around gear wheel 2
Line rotates the cutwork face that can form each group cutting tooth group, and the height in each cutwork face is different, and each fixation is cut
The cutting tooth 4 for belonging to each cutting tooth group is all had on the sharpener wing 3 and the cutting tooth 4 for belonging to each cutting tooth group is at least one
A, each cutting tooth group forms lamination cutwork, specifically forms three groups of cutting tooth groups in the present embodiment 1, corresponds to three cuttings
Contour line, such as tri- cutting contour lines of a, b and c in Fig. 2, three groups of cutting tooth groups, which can form lamination, scrapes and cuts through rock, upper layer cutting
After the cutting tooth 4 of tooth group is worn, the cutting tooth 4 of lower layer's cutting tooth group takes over work.
Further, belong to 4 top of cutting tooth with group cutting tooth group in same cutting wheel on all fixed cutting wings 3
Rotation projection on profile covers whole cutting contour line；Every group of cutting tooth group respectively corresponds a cutting contour line, and adjacent two
The first cutting tooth group with rockwork is leading cutting tooth group in group cutting tooth group, is afterwards lower layer with the cutting tooth group of rockwork
Cutting tooth group, the cutting contour line height difference value of two adjacent cutting tooth groups are r, in same fixed cutting wing 3, belong to and cut in advance
The minimum effectively working depth for cutting the cutting tooth 4 of tooth group is h, wherein 0 < r≤h can guarantee upper layer cutting tooth to the maximum extent
The circumferential offset angle of group and lower layer's cutting tooth group seamless connection work, fixed cutting wing 3 is α, wherein 0 ° of α≤5 ° <.
Embodiment 2
As shown in figure 4, the present embodiment 2 the difference from embodiment 1 is that, fixed cutting wing 3 is ellipse, and upper part
Four cutting tooths 4 are fixedly mounted, are respectively set to hard-metal insert, PDC tooth, axe type tooth and tapered teeth, the present embodiment 2 is also formed
Three groups of cutting tooth groups correspond to three cutting contour lines, such as tri- cutting contour lines of d, e and f in Fig. 4.
Embodiment 3
As it can be seen in figures 5 and 6, the present embodiment 3 the difference from embodiment 1 is that, fixed cutting wing 3 is waveform, and is
Continuous whole cover with collapsing is set on gear wheel 2, specifically arranges 7 wavy whole structures that collapse in 2 outer surface of gear wheel, meanwhile, this
Five groups of cutting tooth groups are specifically formed in embodiment 3, correspond to five cutting contour lines, as g, h, i, j and k five in Fig. 6 cut
Cut contour line.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (7)
1. a kind of long-life single rock bit, special including bit leg (1) and rotational installation in the gear wheel (2) of bit leg (1) front end
Sign is: being fixedly installed with several fixed cuttings wing (3), fixed cutting wing (3) in the outer surface of the gear wheel (2)
On be provided with cutting tooth (4), all cutting tooths (4) form at least two groups cutting tooth groups, with the cutting tooth (4) organized in cutting tooth group
Top can be rotated around the pivot center of the gear wheel (2) in projection to same cutting contour line, cut contour line around gear wheel (2)
Pivot axis can form the cutwork face of each group cutting tooth group, the height in each cutwork face is different, so as to shape
At lamination cutwork.
2. a kind of long-life single rock bit according to claim 1, it is characterised in that: each fixed cutting wing
(3) cutting tooth (4) for belonging to each cutting tooth group is all had on and the cutting tooth (4) for belonging to each cutting tooth group is at least one
It is a.
3. a kind of long-life single rock bit according to claim 1, it is characterised in that: every group of cutting tooth group respectively corresponds
One cutting contour line with the cutting tooth group of rockwork is first leading cutting tooth group in two adjacent groups cutting tooth group, afterwards and rock
The cutting tooth group that lapicide makees is lower layer's cutting tooth group, and the cutting contour line height difference value of two adjacent cutting tooth groups is r, in same fixation
It cuts in wing (3), the minimum effectively working depth for belonging to the cutting tooth (4) of leading cutting tooth group is h, wherein 0 < r≤h.
4. a kind of long-life single rock bit according to claim 1, it is characterised in that: the cutting tooth (4) is hard
At least one of carbide button, PDC tooth, axe type tooth and tapered teeth.
5. a kind of long-life single rock bit according to claim 1, it is characterised in that: fixed cutting wing (3)
Circumferential offset angle be α, wherein 0 ° of α≤5 ° <.
6. a kind of long-life single rock bit according to any one of claims 1 to 5, it is characterised in that: the fixation is cut
The sharpener wing (3) is ellipse, stairstepping or waveform.
7. a kind of long-life single rock bit according to claim 6, it is characterised in that: fixed cutting wing (3)
Continuous whole cover with collapsing is set on the gear wheel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820900850.0U CN208430975U (en) | 2018-06-12 | 2018-06-12 | A kind of long-life single rock bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820900850.0U CN208430975U (en) | 2018-06-12 | 2018-06-12 | A kind of long-life single rock bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208430975U true CN208430975U (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820900850.0U Active CN208430975U (en) | 2018-06-12 | 2018-06-12 | A kind of long-life single rock bit |
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| CN (1) | CN208430975U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798525A (en) * | 2018-06-12 | 2018-11-13 | 中国五冶集团有限公司 | The single-cone rotary drill bit of stack process |
| CN111894466B (en) * | 2020-07-20 | 2021-03-05 | 盐城市荣嘉机械制造有限公司 | Roller bit for petroleum exploration and exploitation |
-
2018
- 2018-06-12 CN CN201820900850.0U patent/CN208430975U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798525A (en) * | 2018-06-12 | 2018-11-13 | 中国五冶集团有限公司 | The single-cone rotary drill bit of stack process |
| CN111894466B (en) * | 2020-07-20 | 2021-03-05 | 盐城市荣嘉机械制造有限公司 | Roller bit for petroleum exploration and exploitation |
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