CN203640611U - Chain wheel diamond drill bit for well drilling - Google Patents
Chain wheel diamond drill bit for well drilling Download PDFInfo
- Publication number
- CN203640611U CN203640611U CN201420023291.1U CN201420023291U CN203640611U CN 203640611 U CN203640611 U CN 203640611U CN 201420023291 U CN201420023291 U CN 201420023291U CN 203640611 U CN203640611 U CN 203640611U
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- China
- Prior art keywords
- chain wheel
- axle journal
- tooth
- drilling well
- teeth dish
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- 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.)
- Expired - Lifetime
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 26
- 239000010432 diamond Substances 0.000 title claims abstract description 26
- 238000005553 drilling Methods 0.000 title claims abstract description 21
- 210000000515 tooth Anatomy 0.000 claims description 76
- 230000036346 tooth eruption Effects 0.000 claims description 35
- 239000004744 fabric Substances 0.000 claims description 31
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 208000004188 Tooth Wear Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
A chain wheel diamond drill bit for well drilling comprises a drill bit body. The end face of the drill bit body is provided with an eccentric support column which deviates the axis of the drill bit body. A main chain wheel journal is disposed on the eccentric support column. A main chain wheel is rotatably supported on the main chain wheel journal. At least one auxiliary chain wheel journal is further disposed on the eccentric support column. An auxiliary chain wheel is rotatably supported on each auxiliary chain wheel journal. The chain wheel diamond drill bit has the advantages that cutting load of each cutting tooth is further balanced, overall service life of the drill bit is prolonged, and the cutting efficiency of the drill bit is increased by the added auxiliary chain wheel.
Description
Technical field
The utility model relates to the diamond bit field that a kind of drilling well is used, particularly a kind of drilling well chain wheel diamond bit.
Background technology
In existing mining drilling construction, often adopt chain wheel drill bit, for example chain wheel drill bit shown in Chinese patent literature CN 103266855 A, this chain wheel is in the time of operation, and both, along with bit body revolution, chain wheel self was 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 for example cutting hole outer rim of part cutting teeth.
Chinese patent literature 200410013335.3, a kind of taper list chain wheel drill bit is disclosed, adopt 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, the problem of existence is, the cutting output of chain wheel termination is very little, main cutting output still concentrates on the tooth of chain wheel bottom, and the tooth wear contacting with the outer fringe position in hole is still very high, has affected the application life of chain wheel.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of drilling well chain wheel diamond bit, can further extend the application life of chain wheel, improves the stock-removing efficiency of chain wheel diamond bit.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of drilling well chain wheel diamond bit, comprise bit body, bit body end face is provided with the eccentric support post that departs 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;
On eccentric support post, be also provided with at least one secondary chain wheel axle journal, 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, and D is the maximum external diameter of a circle of bit body.
The projection width of the cloth flank of tooth of described cardinal teeth dish on horizontal plane is between 1/2D ~ 3/4D.
Tapered, the spherical or bulb cone bottom shape of the cloth flank of tooth of cardinal teeth dish.
Cutting teeth on the cloth flank of tooth is larger compared with profile of tooth little and close bottom near the profile of tooth on top.
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 projection and the trunnion vertical line of the axis of secondary chain wheel axle journal on horizontal plane 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.
The cloth increment that is provided with arc or taper in the termination of eccentric support post, is provided with multiple cutting teeths at cloth increment.
A kind of drilling well chain wheel diamond bit that the utility model provides, on the basis of single chain wheel structure, the structure that has adopted eccentric support post and set up secondary chain wheel, thus the further balanced cutting load of each cutting teeth has extended whole service life of the present utility model; The secondary chain wheel arranging is mainly used in the outer rim position of cutting hole, while rotation due to bit body, the linear velocity at this place is higher, the secondary chain wheel of setting up increases more than 90% the cutting teeth quantity that participates in this place's cutting on the basis of existing technology, has therefore also improved stock-removing efficiency of the present utility model.Especially structure of the present utility model can arrange cutting teeth at the termination of eccentric support post cloth increment, thereby in conjunction with the advantage of fixing tooth-like drill bit diamond and chain wheel formula diamond bit, compliance is wider, and the cutting teeth of cloth increment setting can form a pair of balanced couple with the cutting force of cardinal teeth dish end cutting teeth, this has further improved the stock-removing efficiency of cardinal teeth dish end cutting teeth.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is overall structure schematic diagram of the present utility model.
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.
The specific embodiment
In Fig. 1 ~ 3, a kind of drilling well chain wheel diamond bit, comprise bit body 1, bit body 1 is provided with the tapered thread portion for connecting, also be provided with feed flow hole and plasma discharge hole, bit body 1 operative end surface is provided with the eccentric support post 2 that departs 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;
On eccentric support post 2, be also provided with at least one secondary chain wheel axle journal 7, 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 structures, increase at least one secondary chain wheel 6, preferably, increase in this example two secondary chain wheels 6, shared the cutting task of part for bore edges by the secondary chain wheel 6 increasing, thereby made more cutting teeth 4 participate in the cutting to bore edges position, reduce the wearing and tearing of single cutting teeth 4, improved 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, in revolving round the sun along with bit body 1, are also realized rotation, thereby realize the work compound of multiple cutting teeths 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, and D is the maximum external diameter of a circle of bit body 1.The projection width c of the cloth flank of tooth 8 of described cardinal teeth dish 5 on horizontal plane is between 1/2D ~ 3/4D.In this example, compared with prior art, the projection width of the cloth flank of tooth 8 that has shortened cardinal teeth dish 5 on horizontal plane, to reduce the cutting hardness of cardinal teeth dish 5 bottom position cutting teeths 4, as shown in fig. 1, for cardinal teeth dish 5, bore edges cutting output the best part is mainly by cardinal teeth dish 5 ends, the cutting teeth 4 at position, top as upper left in Fig. 1 completes, main cutting hole center of cardinal teeth dish 5 bottom position cutting teeths 4, and in the time rotating to bore edges position for realizing reaming, the reduction that this is larger the live load of cardinal teeth dish 5 bottom position cutting teeths 4, the sub-load of this reduction is gone to bear by the cutting teeth on the secondary chain wheel 6 increasing newly, thereby realize the live load equilibrium of whole diamond bit, extend application life, and after adopting this structure, also just there is enough locus and remove to set up secondary chain wheel 6, and in also can further improving as 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, it is shaped as subglobular, but not spherical on geometric meaning, being arranged to spherical object is, the live load of balanced end cutting teeth and bottom cutting teeth, the cutting output at outer rim position, hole is shared, for example in cardinal teeth dish 5, be positioned at after the first pore-forming of cutting teeth of end, again by the cutting teeth reaming that is positioned at bottom, secondary chain wheel 6 participates in the cutting of cutting, the especially outer rim of middle part, hole and outer rim, the cutting output of sharing cardinal teeth dish 5 that can be larger simultaneously.
Preferred as in Fig. 1, the cutting teeth 4 on the cloth flank of tooth 8 is larger compared with profile of tooth little and close bottom near the profile of tooth on top.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, in the time that 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 larger, and hardness is when lower, angle can be less.
Preferably, 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, can better share cutting load.
Preferred as in Fig. 2, the angle between projection and the trunnion vertical line 9 of the axis of secondary chain wheel axle journal 7 on horizontal plane is 0 ~ 30 °.Trunnion vertical line 9 herein refers to, the vertical line of axis projection on horizontal plane of cardinal teeth dish axle journal 3.Structure thus, also for adapting to the stratum of different hardness, in the time that hardness is higher, angle should be tending towards increasing, and to produce more rotation, and hardness is hour, and angle should be tending towards reducing, and to produce rotation still less, 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, and secondary chain wheel axle journal 7 should connect the more ratio of secondary chain wheel 6 reliable axial location, 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.
Further, preferably as in Fig. 1, be provided with the cloth increment 12 of arc or taper in the termination of eccentric support post 2, be provided with multiple cutting teeths 4 at cloth increment 12.The advantage of eccentric support post 2 structures of the present utility model is also, can cutting teeth be set at the termination of eccentric support post cloth increment, thereby in conjunction with the advantage of fixing tooth-like diamond bit and chain wheel formula diamond bit, compliance is wider, and the cutting teeth of cloth increment setting can form a pair of balanced couple with the cutting force of cardinal teeth dish end cutting teeth, this has further improved the stock-removing efficiency of cardinal teeth dish end cutting teeth.
Through test in reality driving, each cutting teeth 4 degrees of wear in the utility model are basically identical, therefore can release, and 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 optimal technical scheme of the present utility model; and should not be considered as for restriction of the present utility model; the technical scheme that protection domain of the present utility model should be recorded with claim, comprises that in the technical scheme that claim records, the alternative that is equal to of technical characterictic is protection domain.Being equal within the scope of this, replaces and improves, also within protection domain of the present utility model.
Claims (10)
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) that departs 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);
On eccentric support post (2), be also provided with at least one secondary chain wheel axle journal (7), secondary chain wheel (6) can be rotated to support on secondary chain wheel axle journal (7).
2. a kind of drilling well chain wheel diamond bit according to claim 1, 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 and 2, is characterized in that: the eccentric throw (h) of described eccentric support post (2) is 1/4D ± 1/10D, and D is the maximum external diameter of a circle of bit body (1).
4. a kind of drilling well chain wheel diamond bit according to claim 3, is characterized in that: the projection width (c) of the cloth flank of tooth (8) of described cardinal teeth dish (5) on horizontal plane is between 1/2D ~ 3/4D.
5. a kind of drilling well chain wheel diamond bit according to claim 4, is characterized in that: tapered, the spherical or bulb cone bottom shape of the cloth flank of tooth (8) of cardinal teeth dish (5).
6. a kind of drilling well chain wheel diamond bit according to claim 5, is characterized in that: the cutting teeth (4) on the cloth flank of tooth (8) is larger compared with profile of tooth little and close bottom near the profile of tooth on top.
7. according to a kind of drilling well chain wheel diamond bit described in claim 4 or 5, it 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 °.
8. a kind of drilling well chain wheel diamond bit according to claim 1, is characterized in that: described secondary chain wheel axle journal (7) is two, is arranged symmetrically in the both sides of cardinal teeth dish axle journal (3);
Angle between projection and the trunnion vertical line (9) of the axis of secondary chain wheel axle journal (7) on horizontal plane is 0 ~ 30 °.
9. a kind of drilling well chain wheel diamond bit according to claim 7, 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).
10. a kind of drilling well chain wheel diamond bit according to claim 1, is characterized in that: be provided with the cloth increment (12) of arc or taper in the termination of eccentric support post (2), be provided with multiple cutting teeths (4) at cloth increment (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023291.1U CN203640611U (en) | 2014-01-15 | 2014-01-15 | Chain wheel diamond drill bit for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023291.1U CN203640611U (en) | 2014-01-15 | 2014-01-15 | Chain wheel diamond drill bit for well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203640611U true CN203640611U (en) | 2014-06-11 |
Family
ID=50871866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420023291.1U Expired - Lifetime CN203640611U (en) | 2014-01-15 | 2014-01-15 | Chain wheel diamond drill bit for well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203640611U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711435A (en) * | 2014-01-15 | 2014-04-09 | 宜昌神达石油机械有限公司 | Crankset diamond bit for well drilling |
| CN107939294A (en) * | 2018-01-11 | 2018-04-20 | 成都锐钻钻头制造有限公司 | A kind of rock bit |
-
2014
- 2014-01-15 CN CN201420023291.1U patent/CN203640611U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711435A (en) * | 2014-01-15 | 2014-04-09 | 宜昌神达石油机械有限公司 | Crankset diamond bit for well drilling |
| CN103711435B (en) * | 2014-01-15 | 2016-01-06 | 宜昌神达石油机械有限公司 | A kind of drilling well chain wheel diamond bit |
| CN107939294A (en) * | 2018-01-11 | 2018-04-20 | 成都锐钻钻头制造有限公司 | A kind of rock bit |
| CN107939294B (en) * | 2018-01-11 | 2019-04-09 | 成都锐钻钻头制造有限公司 | A kind of rock bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
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. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |