CN103711435B - A kind of drilling well chain wheel diamond bit - Google Patents
A kind of drilling well chain wheel diamond bit Download PDFInfo
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- CN103711435B CN103711435B CN201410017030.3A CN201410017030A CN103711435B CN 103711435 B CN103711435 B CN 103711435B CN 201410017030 A CN201410017030 A CN 201410017030A CN 103711435 B CN103711435 B CN 103711435B
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- chain wheel
- axle journal
- tooth
- drilling well
- support post
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Abstract
A kind of drilling well chain wheel diamond bit, comprise bit body, bit body end face is provided with the eccentric support post departing from bit body axis, and eccentric support post is provided with cardinal teeth dish axle journal, and cardinal teeth dish can be rotated to support on cardinal teeth dish axle journal; Eccentric support post is also provided with at least one secondary chain wheel axle journal, and secondary chain wheel can be rotated to support on secondary chain wheel axle journal.A kind of drilling well chain wheel diamond bit provided by the invention, the further balanced cutting load of each cutting teeth, extends whole service life of the present invention; The secondary chain wheel set up also improves stock-removing efficiency of the present invention.
Description
Technical field
The present invention relates to a kind of diamond bit field of drilling well, particularly a kind of drilling well chain wheel diamond bit.
Background technology
In existing mining drilling construction, often adopt chain wheel drill bit, such as, chain wheel drill bit shown in Chinese patent literature CN103266855A, this chain wheel operationally, both along with bit body revolution, chain wheel self also around axle journal rotation, to cut broken ground.But this chain wheel drill bit is more suitable for drilling semihard and soft stratum, in hard formation and the strong stratum of abrasiveness, easily collapse tooth, the cutting teeth serious wear of part cutting teeth such as cutting hole outer rim.
Chinese patent literature 200410013335.3, disclose a kind of taper list chain wheel drill bit, have employed the structure of taper list chain wheel, can make the cutting load reasonable layout of chain wheel each several part tooth, to reduce the wearing and tearing of tooth, Problems existing is, the cutting output of chain wheel termination is very little, main cutting output still concentrates on the tooth bottom chain wheel, and the tooth wear namely contacted with the outer fringe position in hole is still very high, have impact on the application life of chain wheel.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of drilling well chain wheel diamond bit, can extend the application life of chain wheel further, improves the stock-removing efficiency of chain wheel diamond bit.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of drilling well chain wheel diamond bit, comprise bit body, bit body end face is provided with the eccentric support post departing from bit body axis, eccentric support post is provided with cardinal teeth dish axle journal, and cardinal teeth dish can be rotated to support on cardinal teeth dish axle journal;
Eccentric support post is also provided with at least one secondary chain wheel axle journal, and secondary chain wheel can be rotated to support on secondary chain wheel axle journal.
Eccentric support post is provided with an inclined-plane, and cardinal teeth dish axle journal is installed on inclined-plane;
The axis of cardinal teeth dish axle journal and secondary chain wheel axle journal and horizontal plane angle are 30 ~ 60 °.
The eccentric throw of described eccentric support post is 1/4D ± 1/10D, D is the maximum external diameter of a circle of bit body.
The cloth flank of tooth of described cardinal teeth dish projection width is in the horizontal plane between 1/2D ~ 3/4D.
Tapered, the spherical or bulb cone bottom shape of the cloth flank of tooth of cardinal teeth dish.
The profile of tooth of cutting teeth on the cloth flank of tooth near top is less and profile of tooth near bottom is larger.
Angle between the cloth flank of tooth of cardinal teeth dish and the parallel lines of bit body axis is 1 ~ 30 °.
Described secondary chain wheel axle journal is two, is arranged symmetrically in the both sides of cardinal teeth dish axle journal;
Angle between the projection in the horizontal plane of the axis of secondary chain wheel axle journal and trunnion vertical line is 0 ~ 30 °.
Tapered, the spherical or bulb cone bottom shape of the secondary chain wheel cloth flank of tooth of described secondary chain wheel.
Be provided with the cloth increment of arc or taper in the termination of eccentric support post, be provided with multiple cutting teeth at cloth increment.
A kind of drilling well chain wheel diamond bit provided by the invention, on the basis of single chain wheel structure, have employed eccentric support post and sets up the structure of secondary chain wheel, thus the balanced further cutting load of each cutting teeth, extend whole service life of the present invention; The secondary chain wheel arranged is mainly used in the outer rim position of cutting hole, because when bit body rotates, the linear velocity at this place is higher, the cutting teeth quantity that the secondary chain wheel set up makes this place of participation cut increases by more than 90% on the basis of existing technology, therefore also improves stock-removing efficiency of the present invention.Especially structure of the present invention can arrange cutting teeth at the termination cloth increment of eccentric support post, thus combine the advantage of fixing tooth-like drill bit diamond and chain wheel formula diamond bit, compliance is wider, and the cutting teeth that arranges of cloth increment and the cutting force of cardinal teeth dish end cutting teeth can form a pair balanced couple, which further improves the stock-removing efficiency of cardinal teeth dish end cutting teeth.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the schematic top plan view of Fig. 1.
Fig. 3 is the A-A cross-sectional schematic of Fig. 2.
In figure: bit body 1, eccentric support post 2, cardinal teeth dish axle journal 3, cutting teeth 4, cardinal teeth dish 5, secondary chain wheel 6, secondary chain wheel axle journal 7, the cloth flank of tooth 8, trunnion vertical line 9, the parallel lines 10 of bit body axis, the secondary chain wheel cloth flank of tooth 11, cloth increment 12.
Detailed description of the invention
As in Fig. 1 ~ 3, a kind of drilling well chain wheel diamond bit, comprise bit body 1, bit body 1 is provided with the conical thread for connecting, also be provided with for fluid apertures and plasma discharge hole, bit body 1 operative end surface is provided with the eccentric support post 2 departing from bit body 1 axis, and eccentric support post 2 is provided with cardinal teeth dish axle journal 3, and cardinal teeth dish 5 can be rotated to support on cardinal teeth dish axle journal 3;
Eccentric support post 2 is also provided with at least one secondary chain wheel axle journal 7, and secondary chain wheel 6 can be rotated to support on secondary chain wheel axle journal 7.Structure thus, on the basis in single cardinal teeth dish 5 structure, add at least one secondary chain wheel 6, preferably, add two secondary chain wheels 6 in this example, share the cutting task of part for bore edges by the secondary chain wheel 6 increased, thus the cutting making more cutting teeth 4 participate in bore edges position, reduce the wearing and tearing of single cutting teeth 4, improve stock-removing efficiency.
Preferred as in Fig. 1, eccentric support post 2 is provided with an inclined-plane, and cardinal teeth dish axle journal 3 is installed on inclined-plane;
The axis of cardinal teeth dish axle journal 3 and secondary chain wheel axle journal 7 and horizontal plane angle are 30 ~ 60 °.Structure thus, cardinal teeth dish 5 and secondary chain wheel 6, while revolving round the sun along with bit body 1, also realize rotation, thus realize the work compound of multiple cutting teeth 4 on chain wheel.
Preferred as in Fig. 1,2, the eccentric throw h of described eccentric support post 2 is 1/4D ± 1/10D, D is the maximum external diameter of a circle of bit body 1.The cloth flank of tooth 8 of described cardinal teeth dish 5 projection width c is in the horizontal plane between 1/2D ~ 3/4D.In this example, compared with prior art, shorten the cloth flank of tooth 8 projection width in the horizontal plane of cardinal teeth dish 5, to reduce the cutting hardness of cardinal teeth dish 5 bottom position cutting teeth 4, as shown in fig. 1, for cardinal teeth dish 5, bore edges cutting output the best part is primarily of cardinal teeth dish 5 end, the cutting teeth 4 at position, top as upper left in Fig. 1 completes, cardinal teeth dish 5 bottom position cutting teeth 4 then main cutting hole center, and when rotating to bore edges position for realizing reaming, the live load of what this was larger reduce cardinal teeth dish 5 bottom position cutting teeth 4, the sub-load of this reduction is gone to bear by the cutting teeth on the secondary chain wheel 6 increased newly, thus the live load realizing whole diamond bit is balanced, extend application life, and after adopting this structure, also just there is enough locus go to set up secondary chain wheel 6, and also can as in further improvement described later, in the termination of eccentric support post 2, fixing cutting teeth 4 is set.
In optional scheme, tapered, the spherical or bulb cone bottom shape of the cloth flank of tooth 8 of cardinal teeth dish 5.Preferably spherical in this example, herein spherical is for convenience of description, its shape is subglobular, but not spherical on geometric meaning, be arranged to spherical object be, the live load of balanced end cutting teeth and bottom cutting teeth, the cutting output at outer rim position, hole is shared, after such as, being positioned at the first pore-forming of cutting teeth of end in cardinal teeth dish 5, again by the cutting teeth reaming being positioned at bottom, secondary chain wheel 6 then participates in the middle part of hole and the cutting of outer rim simultaneously, the especially cutting of outer rim, the cutting output sharing cardinal teeth dish 5 that can be larger.
Preferred as in Fig. 1, the profile of tooth of cutting teeth 4 near top on the cloth flank of tooth 8 is less and profile of tooth near bottom is larger.Structure thus, makes sharing of cutting output comparatively balanced.
Preferred structure is as in Fig. 1, and the angle between the cloth flank of tooth 8 of cardinal teeth dish 5 and the parallel lines 10 of bit body axis is 1 ~ 30 °.Structure thus, to adapt to the stratum of different hardness, when hardness is higher, the angle between the cloth flank of tooth 8 of cardinal teeth dish 5 and the parallel lines 10 of bit body axis should be comparatively large, and when hardness is lower, then angle can be less.
Preferably, as in Fig. 1,2, described secondary chain wheel axle journal 7 is two, is arranged symmetrically in the both sides of cardinal teeth dish axle journal 3; Structure thus, better can share cutting load.
Preferred as in Fig. 2, the angle between the projection in the horizontal plane of the axis of secondary chain wheel axle journal 7 and trunnion vertical line 9 is 0 ~ 30 °.Trunnion vertical line 9 herein refers to, the vertical line that the axis of cardinal teeth dish axle journal 3 projects in the horizontal plane.Structure thus, also for adapting to the stratum of different hardness, when hardness is higher, angle should be tending towards increasing, and to produce more rotation, and when hardness is less, angle should be tending towards reducing, and to produce less rotation, increases stock-removing efficiency.Preferably, the cutting teeth on secondary chain wheel 6 should be tending towards pointing to revolution direction, and to sense of rotation deflection, is generally and guarantees intensity, the ratio also reliable axial location that secondary chain wheel axle journal 7 answers through secondary chain wheel 6 more, to overcome cutting component vertically.
In optional scheme, tapered, the spherical or bulb cone bottom shape of the secondary chain wheel cloth flank of tooth 11 of described secondary chain wheel 6.In this example, preferably adopt the spherical secondary chain wheel cloth flank of tooth 11.
Preferred as in Fig. 1 further, be provided with the cloth increment 12 of arc or taper in the termination of eccentric support post 2, be provided with multiple cutting teeth 4 at cloth increment 12.The advantage of eccentric support post 2 structure of the present invention is also, cutting teeth can be set at the termination cloth increment of eccentric support post, thus combine the advantage of fixing tooth-like diamond bit and chain wheel formula diamond bit, compliance is wider, and the cutting teeth that arranges of cloth increment and the cutting force of cardinal teeth dish end cutting teeth can form a pair balanced couple, which further improves the stock-removing efficiency of cardinal teeth dish end cutting teeth.
Through test in reality driving, each cutting teeth 4 degree of wear in the present invention is basically identical, and therefore can release, the cutting load of each cutting teeth 4 is comparatively balanced.In use do not find to collapse tooth phenomenon.
The above embodiments are only the preferred technical solution of the present invention; and should not be considered as restriction of the present invention; the technical scheme that protection scope of the present invention should be recorded with claim, the equivalents comprising technical characteristic in the technical scheme of claim record is protection domain.Namely the equivalent replacement within the scope of this improves, also within protection scope of the present invention.
Claims (7)
1. a drilling well chain wheel diamond bit, comprise bit body (1), it is characterized in that: bit body (1) end face is provided with the eccentric support post (2) departing from bit body (1) axis, eccentric support post (2) is provided with cardinal teeth dish axle journal (3), and cardinal teeth dish (5) can be rotated to support on cardinal teeth dish axle journal (3);
Eccentric support post (2) is also arranged with two secondary chain wheel axle journals (7), secondary chain wheel (6) can be rotated to support on secondary chain wheel axle journal (7), and the angle between the projection in the horizontal plane of the axis of secondary chain wheel axle journal (7) and trunnion vertical line (9) is 0 ~ 30 °;
The eccentric throw (h) of described eccentric support post (2) is 1/4D ± 1/10D, D is the maximum external diameter of a circle of bit body (1);
The cloth flank of tooth (8) of described cardinal teeth dish (5) projection width (c) is in the horizontal plane between 1/2D ~ 3/4D.
2. a kind of drilling well chain wheel diamond bit according to claim 1, it is characterized in that: eccentric support post (2) is provided with an inclined-plane, cardinal teeth dish axle journal (3) is installed on inclined-plane;
The axis of cardinal teeth dish axle journal (3) and secondary chain wheel axle journal (7) and horizontal plane angle are 30 ~ 60 °.
3. a kind of drilling well chain wheel diamond bit according to claim 1, is characterized in that: tapered, the spherical or bulb cone bottom shape of the cloth flank of tooth (8) of cardinal teeth dish (5).
4. a kind of drilling well chain wheel diamond bit according to claim 3, is characterized in that: the profile of tooth of the cutting teeth (4) on the cloth flank of tooth (8) near top is less and profile of tooth near bottom is larger.
5. a kind of drilling well chain wheel diamond bit according to claim 1 or 3, is characterized in that: the angle between the cloth flank of tooth (8) of cardinal teeth dish (5) and the parallel lines (10) of bit body axis is 1 ~ 30 °.
6. a kind of drilling well chain wheel diamond bit according to claim 5, is characterized in that: tapered, the spherical or bulb cone bottom shape of the secondary chain wheel cloth flank of tooth (11) of described secondary chain wheel (6).
7. a kind of drilling well chain wheel diamond bit according to claim 1, is characterized in that: the cloth increment (12) being provided with arc or taper in the termination of eccentric support post (2), is provided with multiple cutting teeth (4) at cloth increment (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017030.3A CN103711435B (en) | 2014-01-15 | 2014-01-15 | A kind of drilling well chain wheel diamond bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017030.3A CN103711435B (en) | 2014-01-15 | 2014-01-15 | A kind of drilling well chain wheel diamond bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103711435A CN103711435A (en) | 2014-04-09 |
| CN103711435B true CN103711435B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410017030.3A Active CN103711435B (en) | 2014-01-15 | 2014-01-15 | A kind of drilling well chain wheel diamond bit |
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| CN (1) | CN103711435B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB263392A (en) * | 1926-05-27 | 1926-12-30 | John Adolph Zublin | Improvements in rotary bits for well boring |
| GB385819A (en) * | 1931-05-19 | 1933-01-05 | Chicago Pneumatic Tool Co | Rotary roller bits for well-drilling |
| US4285409A (en) * | 1979-06-28 | 1981-08-25 | Smith International, Inc. | Two cone bit with extended diamond cutters |
| CN88102185A (en) * | 1987-04-21 | 1988-11-02 | 克莱迪斯克国际公司 | Rotary drilling device |
| RU2014422C1 (en) * | 1991-04-30 | 1994-06-15 | Сургутское отделение Западно-Сибирского научно-исследовательского и проектно-конструкторского института технологии глубокого разведочного бурения | Drill bit |
| US6439326B1 (en) * | 2000-04-10 | 2002-08-27 | Smith International, Inc. | Centered-leg roller cone drill bit |
| CN2592843Y (en) * | 2002-12-12 | 2003-12-17 | 江汉石油钻头股份有限公司 | Eccentric tri-cone rotary drill bit |
| CN203640611U (en) * | 2014-01-15 | 2014-06-11 | 宜昌神达石油机械有限公司 | Chain wheel diamond drill bit for well drilling |
-
2014
- 2014-01-15 CN CN201410017030.3A patent/CN103711435B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB263392A (en) * | 1926-05-27 | 1926-12-30 | John Adolph Zublin | Improvements in rotary bits for well boring |
| GB385819A (en) * | 1931-05-19 | 1933-01-05 | Chicago Pneumatic Tool Co | Rotary roller bits for well-drilling |
| US4285409A (en) * | 1979-06-28 | 1981-08-25 | Smith International, Inc. | Two cone bit with extended diamond cutters |
| CN88102185A (en) * | 1987-04-21 | 1988-11-02 | 克莱迪斯克国际公司 | Rotary drilling device |
| RU2014422C1 (en) * | 1991-04-30 | 1994-06-15 | Сургутское отделение Западно-Сибирского научно-исследовательского и проектно-конструкторского института технологии глубокого разведочного бурения | Drill bit |
| US6439326B1 (en) * | 2000-04-10 | 2002-08-27 | Smith International, Inc. | Centered-leg roller cone drill bit |
| CN2592843Y (en) * | 2002-12-12 | 2003-12-17 | 江汉石油钻头股份有限公司 | Eccentric tri-cone rotary drill bit |
| CN203640611U (en) * | 2014-01-15 | 2014-06-11 | 宜昌神达石油机械有限公司 | Chain wheel diamond drill bit for well drilling |
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| CN103711435A (en) | 2014-04-09 |
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Address after: 443001 Hubei city of Yichang province Wujiagang Gorges private science and Technology Park Qian Ping Road No. 6 Patentee after: Yichang Shenda Technology Co., Ltd Address before: 443001 Hubei city of Yichang province Wujiagang Gorges private science and Technology Park Qian Ping Road No. 6 Patentee before: YICHANG SHENDA PETROMACHINE Co.,Ltd. |
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