CN109898998A - A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row - Google Patents
A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row Download PDFInfo
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- CN109898998A CN109898998A CN201910158067.0A CN201910158067A CN109898998A CN 109898998 A CN109898998 A CN 109898998A CN 201910158067 A CN201910158067 A CN 201910158067A CN 109898998 A CN109898998 A CN 109898998A
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Abstract
The present invention provides the secondary broken rock drill bits that a kind of spiral wing additional mechanical supercharging returns row, comprising: bit body, wing, gear wheel；The top of bit body is arranged in the wing, and wing is an integral structure with bit body；The gage portion is arranged on the outer wall of wing；The present invention passes through the improvement to broken rock drill bit, cutting at one time is carried out with drill bit bottom, form primary landwaste, primary landwaste returns at gear wheel in the case where row is returned in the carrying of drilling fluid, gear wheel can carry out second-time breakage, spiral wing slides in the longitudinal direction and what the borehole wall generated is face contact, it is far longer than the line way of contact of traditional straight knife wing, the extensional vibration in drilling process can be reduced, the landwaste that bit cutting generates row of returning upwards under the action of helicoid vertical stress component, fluid cutting carring generates reaction force to circular knife aerofoil and can be pressurized to drill bit, the problem of being proposed in background technique one to the effective solution present invention and deficiency.
Description
Technical field
The present invention relates to broken rock bit technique fields, more specifically, more particularly to a kind of by way of screwfeed
Realize the auxiliary row of returning, and reaction force acts are realized in drill bit and increase bit pressure, while helical structure design is reduced in the course of work
The vibration of broken rock drill bit.
Background technique
At present in bad ground, the service life and rate of penetration of drill bit are badly in need of improving.But along with materialogy
Development, PDC composite sheet material technology reaches its maturity.Then, be born PDC- gear wheel composite drill bit, on rigid stratum, cause
There are high drilling efficiency, deflecting stabilization, drilling life of bit length etc. excellent in close property stratum, high abrasive stratum and directional well
Gesture.Although composite drill bit achieves ideal effect in bad ground, theoretical basis and designing technique compare gear wheel
Drill bit and PDC drill bit are also very immature.
In drilling process, because the rock solid-state shaft bottom cut be it is rough, will cause drill bit and continuing to cut
Vibration in the process influences the quality of drilling life of bit and well track；In addition, in directional well and horizontal well, due to
Wellbore has certain tilt angle, and the landwaste in drilling fluid returns row's low efficiency, and drill bit is inadequate to shaft bottom application bit pressure, causes to take off
Pressure.In order to solve the problems, such as that the above drill vibration, the landwaste lifting row of returning, inclined borehole apply bit pressure, the prior art mainly passes through
Following measure improves technology:
1, it reduces vibration aspect: for the stability of bit problem of drill bit during the work time, usually using at the scene
Stabilizer is installed to reduce drill vibration on drill collar and drilling rod, this, which will cause, frequently makes a trip, and greatly promotes drilling cost.
2, in terms of the auxiliary row of returning: relying primarily on the Hydraulics design of ground pump group, distributed by ground pump group at present
Energy to drill bit carries out the row of returning.There is no the booster actions for playing rotary drill column.
3, in terms of increasing bit pressure: mainly individually increasing a propulsion device.
The above is all that independent functional device is realized, does not give full play to and utilize existing drilling condition,
In view of this, study improvement for existing problem, the secondary broken rock brill that a kind of spiral wing additional mechanical supercharging returns row is provided
Head, it is intended to by the technology, achieve the purpose that solve the problems, such as and improve practical value.
Summary of the invention
It is above-mentioned to solve the purpose of the present invention is to provide the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging returns row
The stability of bit problem of the drill bit proposed in background technique during the work time, usually at the scene using on drill collar and drilling rod
Stabilizer is installed to reduce drill vibration, this, which will cause, frequently makes a trip, and greatly promotes drilling cost；Assist the row's of returning aspect mesh
Before rely primarily on the Hydraulics design of ground pump group, carry out the row of returning by the energy that ground pump group is assigned to drill bit.Not
There is the booster action for playing rotary drill column；Mainly individually increase a propulsion device in terms of increasing bit pressure, the above is all
What independent functional device was realized, the problem of not giving full play to and utilizing existing drilling condition and deficiency.
To achieve the above object, the present invention provides the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging returns row, by
Technological means is reached in detail below:
A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row, comprising: bit body, wing, tooth post, composite sheet,
Apical tooth, cone tooth, monodentate, gear wheel, gage portion, breaker slot, screw thread, runner, hydrophthalmia；The top of bit body is arranged in the wing
End, and wing is an integral structure with bit body；The gage portion is arranged on the outer wall of wing；The apical tooth welding-on installation
On the top of wing；The cone tooth welding-on is mounted on the top of wing, and bores tooth position in the two sides of apical tooth；The apical tooth and cone tooth
It is sintered by tooth post and composite sheet；The monodentate welding-on is mounted on the middle position on bit body top；The gear wheel installation
On the top of bit body；The breaker slot is provided on the outer wall of bit body lower part；The screw thread is located at the bottom of bit body；Institute
Hydrophthalmia perforation is stated to be arranged on bit body；The inside of bit body, and the end of runner and hydrophthalmia phase is arranged in the runner perforation
Perforation.
As advanced optimizing for the technical program, the secondary broken rock that a kind of spiral wing additional mechanical supercharging of the present invention returns row is bored
Twist, and wing is provided at three the overall appearance of the wing altogether, top circular array of the wing in bit body
Shape distribution.
As advanced optimizing for the technical program, the secondary broken rock that a kind of spiral wing additional mechanical supercharging of the present invention returns row is bored
The overall appearance of the gage portion twist, and on the outer wall of gage portion uniformly, regularly mosaic diamond particle.
As advanced optimizing for the technical program, the secondary broken rock that a kind of spiral wing additional mechanical supercharging of the present invention returns row is bored
The apical tooth and cone tooth are arranged on the outer wall of wing top left hand, and are bored tooth and be symmetrically arranged at N in the two sides of apical tooth,
The diameter of every place's cone tooth is all different, and the diameter successively decreases step by step from centre to two sides.
As advanced optimizing for the technical program, the secondary broken rock that a kind of spiral wing additional mechanical supercharging of the present invention returns row is bored
The hydrophthalmia is made of two parts, and three hydrophthalmias of exterior portion are between gear wheel and wing, a water of inboard portion
Eye is located at the top of wing, and the aperture of every place's hydrophthalmia is tapered from inside to outside.
As advanced optimizing for the technical program, the secondary broken rock that a kind of spiral wing additional mechanical supercharging of the present invention returns row is bored
The runner is from screw thread to the gradually transition from thick to thin of bit body top end.
As advanced optimizing for the technical program, the secondary broken rock that a kind of spiral wing additional mechanical supercharging of the present invention returns row is bored
The shape of the gear wheel be designed as it is single bore gear wheel, conical surface insert hard-metal insert, there are bearing runway and shoulder in inside.
As advanced optimizing for the technical program, the secondary broken rock that a kind of spiral wing additional mechanical supercharging of the present invention returns row is bored
The tooth post is process by Talide, and composite sheet is the polycrystalline diamond layer being wrapped in outside tooth post.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages:
1, twist, and wing is provided at three the overall appearance of wing of the present invention altogether, and wing is on the top of bit body
The setting of circular array shape distribution, cutting face is smaller, to reach segmentation cutting effect, and cutting in unit time when cutting
Area is small, and it is minimum to be formed by landwaste；Cutting effect is more smooth；The area of cut is small in unit time, and rub small, cutting resistance
Small, bring drill vibration amplitude is smaller, therefore more stable；Lesser landwaste and liquid stream effect, not only increase radiating rate,
The stability of drilling tool and the structural strength of tooth are also improved, and then improves the service life of wing.
2, the overall appearance of gage portion of the present invention twist, and on the outer wall of gage portion uniformly, regularly inlay
It can be effectively prevented while ensuring wellbore not undergauge in the setting of diamond particles, hardness and abrasiveness with higher
It is excessively abraded and loses deflecting control ability, play the role of anti-oblique.
3, apical tooth of the present invention and cone tooth are arranged on the outer wall of wing top left hand, and it is symmetrical in the two sides of apical tooth to bore tooth
It is provided at N, the diameter of every place's cone tooth is all different, the setting that the diameter successively decreases step by step from centre to two sides, due to wing
Clockwise rotary motion is done around drill bit body axis, what apical tooth and cone tooth were mounted on that left side can be good absorbs impact load,
And rock is cut, and the cone tooth of different-diameter keeps the shock loading born more uniform, guarantees cutting effect.
4, hydrophthalmia of the present invention is made of two parts, and three hydrophthalmias of exterior portion are between gear wheel and wing, inside portion
Point a hydrophthalmia be located at the top of wing, and the setting that the aperture of every place's hydrophthalmia is tapered from inside to outside, bottom it is unique
Hydrophthalmia is identical with three hydrophthalmia apertures in outside, and four hydrophthalmias generate stronger liquid jet, and by gear wheel and wing it
Between gap return row along the helicoid of wing, achieve the effect that cooling cutting tooth and gear wheel tooth, and liquid stream with drilling cuttings by
Circular knife aerofoil active force upwards the row of returning while, drilling well liquid stream equally to wing face generate downward reaction force, can play
Auxiliary increases the effect of bit pressure, to further improve drilling well timeliness.It is close why the hydrophthalmia in outside is arranged in wing
Gear wheel side is apical tooth and cone tooth because of its flushable and cooling wing of drilling fluid liquid stream generated, and rotates in gear wheel
The middle inertia energy using liquid equally can generate preferable cooling and lubricating to gear wheel tooth and act on；The main function of internal hydrophthalmia
Be it is timely carry drilling cuttings and enter annular space return row, specific surface drill bit is to the Repeated Cutting of landwaste, in addition, rock bit is in rotary course
It will drive drilling fluid lateral flow, same between the gap gear wheel and wing have cleaning and lubricating action.
5, the present invention by the improvement to broken rock drill bit there is drill bit bottom to carry out cutting at one time, form primary landwaste, just
Grade landwaste returns at gear wheel in the case where row is returned in the carrying of drilling fluid, and gear wheel can carry out second-time breakage, spiral wing slides in the longitudinal direction
With the borehole wall generate be face contact, be far longer than the line way of contact of traditional straight knife wing, it is possible to reduce the longitudinal direction in drilling process
The landwaste that vibration, bit cutting generate row of returning upwards under the action of helicoid vertical stress component, fluid cutting carring is to circular knife
Aerofoil generates reaction force and can be pressurized to drill bit, thus effective solution the problem of proposing in background technique one of the invention
And deficiency.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is overlooking structure diagram of the invention；
Fig. 3 is view structural schematic diagram obliquely downward of the invention；
Fig. 4 is bit body structures schematic diagram of the invention；
Fig. 5 is cone structure schematic diagram of the invention；
Fig. 6 is runner schematic diagram of internal structure of the invention.
In figure: bit body 1, tooth post 3, composite sheet 4, apical tooth 5, cone tooth 6, monodentate 7, gear wheel 8, gage portion 9, unloads wing 2
Catching groove 10, screw thread 11, runner 12, hydrophthalmia 13.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
It should be noted that in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with
On；The orientation of the instructions such as term " on ", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion "
Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance.
Meanwhile in the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection " should be done
It broadly understood, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connection,
It is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Referring to Figure 1 to Fig. 6, the present invention provide a kind of spiral wing additional mechanical supercharging return row secondary broken rock drill bit it is specific
Implementer's case:
A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row, comprising: bit body 1, wing 2, tooth post 3, compound
Piece 4, apical tooth 5, cone tooth 6, monodentate 7, gear wheel 8, gage portion 9, breaker slot 10, screw thread 11, runner 12, hydrophthalmia 13；Wing 2 is arranged
On the top of bit body 1, and wing 2 is an integral structure with bit body 1；Gage portion 9 is arranged on the outer wall of wing 2；Top
5 welding-on of tooth is mounted on the top of wing 2；Cone 6 welding-on of tooth is mounted on the top of wing 2, and bores the two sides that tooth 6 is located at apical tooth 5；Top
Tooth 5 is sintered with cone tooth 6 by tooth post 3 and composite sheet 4；7 welding-on of monodentate is mounted on the middle position on 1 top of bit body；Tooth
Wheel 8 is mounted on the top of bit body 1；Breaker slot 10 is provided on the outer wall of 1 lower part of bit body；Screw thread 11 is located at bit body 1
Bottom；The perforation of hydrophthalmia 13 is arranged on bit body 1；Runner 12, which penetrates through, is arranged in the inside of bit body 1, and the end of runner 12 with
Hydrophthalmia 13 connects.
Specifically, the overall appearance of wing 2 is in the shape of a spiral, and wing 2 is provided at three altogether, and wing 2 is on the top of bit body 1
The distribution of circular array shape is held, cutting face is smaller, to reach segmentation cutting effect, and the area of cut in unit time when cutting
It is small, it is minimum to be formed by landwaste；Cutting effect is more smooth；The area of cut is small in unit time, rubs small, cutting resistance is small, band
The drill vibration amplitude come is smaller therefore more stable；Lesser landwaste and liquid stream effect, not only increase radiating rate, also mention
The stability of drilling tool and the structural strength of tooth have been risen, and then has improved the service life of wing 2.
Specifically, the overall appearance of gage portion 9 is twist, and uniformly, regularly inlayed on the outer wall of gage portion 9
It is excessive that it can be effectively prevented while ensuring wellbore not undergauge in diamond particles, hardness and abrasiveness with higher
It wears and loses deflecting control ability, play the role of anti-oblique.
Specifically, apical tooth 5 and cone tooth 6 are arranged on the outer wall of 2 top left hand of wing, and tooth 6 is bored in the two sides of apical tooth 5
It is symmetrically arranged at N, the diameter of every place's cone tooth 6 is all different, and diameter successively decreases step by step from centre to two sides, since wing 2 is around brill
Head body axis does clockwise rotary motion, and apical tooth 5 and cone tooth 6 are mounted on the load that absorbs impact that left side can be good, and
Rock is cut, and the cone tooth 6 of different-diameter keeps the shock loading born more uniform, guarantees cutting effect.
Specifically, hydrophthalmia 13 is made of two parts, three hydrophthalmias 13 of exterior portion are interior between gear wheel 8 and wing 2
One hydrophthalmia of side section is located at the top of wing 2, and the aperture of every place's hydrophthalmia 13 is tapered from inside to outside, bottom it is unique
Hydrophthalmia is identical with three hydrophthalmia apertures in outside, and four hydrophthalmias 13 generate stronger liquid jet, and pass through gear wheel 8 and wing
Row is returned along the helicoid of wing 2 in gap between 2, achievees the effect that cooling cutting tooth and gear wheel tooth, and liquid stream is the same as brill
Bits by circular knife aerofoil active force upwards the row of returning while, drilling well liquid stream equally to wing face generate downward reaction force, can
Play the role of auxiliary and increase bit pressure, to further improve drilling well timeliness.Why the hydrophthalmia in outside is arranged in wing
It is apical tooth 5 and cone tooth 6 because of its flushable and cooling wing 2 of drilling fluid liquid stream generated, and in tooth close to gear wheel side
Equally preferable cooling and lubricating can be generated to 8 tooth of gear wheel using the inertia energy of liquid in 8 rotation of wheel to act on；Internal hydrophthalmia 13
Main function be it is timely carry drilling cuttings and enter annular space return row, specific surface drill bit is to the Repeated Cutting of landwaste, in addition, rock bit exists
It will drive drilling fluid lateral flow in rotary course, same between the gap gear wheel 8 and wing 2 have cleaning and lubricating action.
Specifically, runner 12 is from screw thread 11 to the gradually transition from thick to thin of 1 top end of bit body.
Specifically, the shape of gear wheel 8 be designed as it is single bore gear wheel, conical surface insert hard-metal insert, inside have bearing runway and
Shoulder is matched using the sliding shearing mechanism of the arrangement of 8 appearance tooth of gear wheel with 2 broken rock of wing, is reached to wellbore periphery
The crushing effect of rock.
Specifically, tooth post 3 is process by Talide, and composite sheet 4 is the plycrystalline diamond being wrapped in outside tooth post 3
Diamond layer, making it not only has the hardness and wearability of diamond, but also has tungsten carbide structural strength and impact capacity, to meet
The requirement of level-one cutting.
Specific implementation step:
When bit body 1 enters rock stratum, the apical tooth 5 on 2 top of wing contacts rock stratum first, and it is broken to carry out level-one cutting to rock
It is broken, primary landwaste is formed, primary landwaste returns at gear wheel 8 in the case where row is returned in the carrying of drilling fluid, and gear wheel 8 can carry out landwaste secondary
It is broken, and in the process, the row of returning, fluid carry the landwaste that bit cutting generates upwards under the action of helicoid vertical stress component
Landwaste generates reaction force to 2 face of spiral wing and can be pressurized to drill bit, efficiently solves and is assigned to drill bit by ground pump group
Energy is carried out the row of returning, is carried out the mode bring inconvenience such as being pressurized using propulsion device.
In summary: a kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row, passes through the overall appearance of wing
Twist, and wing is provided at three altogether, wing bit body top circular array shape be distributed setting, cutting face compared with
Small, to reach segmentation cutting effect, and the area of cut is small in the unit time when cutting, and it is minimum to be formed by landwaste；Cutting effect
Fruit is more smooth；The area of cut is small in unit time, rubs small, cutting resistance is small, and bring drill vibration amplitude is smaller, therefore more
Stablize；Lesser landwaste and liquid stream effect, not only increase radiating rate, the structure of the stability and tooth that also improve drilling tool is strong
Degree, and then improve the service life of wing；Twist by the overall appearance of gage portion, and on the outer wall of gage portion
Uniformly, the regularly setting of mosaic diamond particle, hardness and abrasiveness with higher are ensuring the same of wellbore not undergauge
When, it can be effectively prevented and is lost deflecting control ability by inordinate wear, plays the role of anti-oblique；It is all provided with by apical tooth and cone tooth
It sets on the outer wall of wing top left hand, and bores tooth and be symmetrically arranged with N in the two sides of apical tooth, every place bores the diameter of tooth not phase
Together, the setting that the diameter successively decreases step by step from centre to two sides, since wing does clockwise rotation around drill bit body axis
What movement, apical tooth and cone tooth were mounted on that left side can be good absorbs impact load, and cuts rock, and the cone of different-diameter
Tooth keeps the shock loading born more uniform, guarantees cutting effect；It is made of hydrophthalmia two parts, three water of exterior portion
Eye is between gear wheel and wing, and a hydrophthalmia of inboard portion is located at the top of wing, and the aperture of every place's hydrophthalmia 13 is by interior
To the setting being tapered outside, unique hydrophthalmia of bottom and three hydrophthalmia apertures in outside are identical, and four hydrophthalmias generate relatively strong
Liquid jet, and row is returned along the helicoid of wing by the gap between gear wheel and wing, reaches cooling cutting tooth and tooth
Take turns tooth effect, and liquid stream with drilling cuttings by circular knife aerofoil active force upwards the row of returning while, drilling well liquid stream is equally to knife
Aerofoil generates downward reaction force, can play the role of auxiliary and increase bit pressure, to further improve drilling well timeliness.Outside
Why the hydrophthalmia of side is arranged in wing close to gear wheel side, is because of the flushable and cooling wing of the drilling fluid liquid stream of its generation
Apical tooth and cone tooth, and using the inertia energy of liquid equally gear wheel tooth can be generated in gear wheel rotation preferable cooling
Lubricating action；The main function of internal hydrophthalmia be it is timely carry drilling cuttings and enter annular space return row, specific surface drill bit cuts the repetition of landwaste
It cuts, in addition, rock bit will drive drilling fluid lateral flow in rotary course, same between the gap gear wheel and wing have
Cleaning and lubricating action；By the improvement to broken rock drill bit, there is drill bit bottom to carry out cutting at one time, forms primary landwaste, just
Grade landwaste returns at gear wheel in the case where row is returned in the carrying of drilling fluid, and gear wheel can carry out second-time breakage, spiral wing slides in the longitudinal direction
With the borehole wall generate be face contact, be far longer than the line way of contact of traditional straight knife wing, it is possible to reduce the longitudinal direction in drilling process
The landwaste that vibration, bit cutting generate row of returning upwards under the action of helicoid vertical stress component, fluid cutting carring is to circular knife
Aerofoil generates the advantages of reaction force can be pressurized drill bit, so that the effective solution present invention proposes in background technique one
The problem of and deficiency.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging returns row, comprising: bit body (1), wing (2), tooth post (3),
Composite sheet (4), apical tooth (5), cone tooth (6), monodentate (7), gear wheel (8), gage portion (9), breaker slot (10), screw thread (11), stream
Road (12), hydrophthalmia (13)；It is characterized by: the wing (2) is arranged on the top of bit body (1), and wing (2) and bit body
(1) it is an integral structure；The gage portion (9) is arranged on the outer wall of wing (2)；Apical tooth (5) welding-on is mounted on knife
The top of the wing (2)；Described cone tooth (6) welding-on is mounted on the top of wing (2), and bores the two sides that tooth (6) are located at apical tooth (5)；Institute
It states apical tooth (5) and is sintered with cone tooth (6) by tooth post (3) and composite sheet (4)；Monodentate (7) welding-on is mounted on bit body
(1) middle position on top；The gear wheel (8) is mounted on the top of bit body (1)；The breaker slot (10) is provided with bit body
(1) on the outer wall of lower part；The screw thread (11) is located at the bottom of bit body (1)；Hydrophthalmia (13) perforation is arranged in bit body
(1) on；Runner (12) perforation is arranged in the inside of bit body (1), and the end of runner (12) connects with hydrophthalmia (13).
2. the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging according to claim 1 returns row, it is characterised in that: institute
State the overall appearance of wing (2) in the shape of a spiral, and wing (2) is provided at three altogether, wing (2) is on the top of bit body (1)
The distribution of circular array column-shaped.
3. the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging according to claim 1 returns row, it is characterised in that: institute
State the overall appearance of gage portion (9) twist, and on the outer wall of gage portion (9) uniformly, regularly mosaic diamond
Grain.
4. the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging according to claim 1 returns row, it is characterised in that: institute
It states apical tooth (5) and cone tooth (6) is arranged on the outer wall of wing (2) top left hand, and bore tooth (6) in the two sides pair of apical tooth (5)
Title is provided at N, and the diameter of every place's cone tooth (6) is all different, and the diameter successively decreases step by step from centre to two sides.
5. the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging according to claim 1 returns row, it is characterised in that: institute
It states hydrophthalmia (13) to be made of two parts, three hydrophthalmias (13) of exterior portion are located between gear wheel (8) and wing (2), inside portion
The hydrophthalmia divided is located at the top of wing (2), and the aperture of every place's hydrophthalmia (13) is tapered from inside to outside.
6. the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging according to claim 1 returns row, it is characterised in that: institute
Runner (12) is stated at screw thread (11) to the gradually transition from thick to thin of bit body (1) top end.
7. the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging according to claim 1 returns row, it is characterised in that: institute
The shape for stating gear wheel (8) is designed as single cone gear wheel, and conical surface insert hard-metal insert, there are bearing runway and shoulder in inside.
8. the secondary broken rock drill bit that a kind of spiral wing additional mechanical supercharging according to claim 1 returns row, it is characterised in that: institute
It states tooth post (3) to be process by Talide, and composite sheet (4) is to be wrapped in the external polycrystalline diamond of tooth post (3)
Layer.
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| CN201910158067.0A CN109898998A (en) | 2019-03-03 | 2019-03-03 | A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row |
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| CN201910158067.0A CN109898998A (en) | 2019-03-03 | 2019-03-03 | A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114016508A (en) * | 2021-11-10 | 2022-02-08 | 湖南鸿辉科技有限公司 | Construction platform for cast-in-place pile hard rock construction and construction method thereof |
| CN114991656A (en) * | 2022-05-26 | 2022-09-02 | 潍坊盛德石油机械制造有限公司 | Screw drill capable of preventing drill water hole from being blocked |
| CN116086873A (en) * | 2023-04-10 | 2023-05-09 | 河北鹏钜建设工程有限公司 | Highway detects coring device |
| CN116296560A (en) * | 2023-05-23 | 2023-06-23 | 山东省煤田地质局第三勘探队 | Geological investigation equipment of quick well drilling |
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| CN109339709A (en) * | 2018-12-04 | 2019-02-15 | 长江大学 | It is novel to bore PDC cutter composite drill bit again |
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| CN114016508A (en) * | 2021-11-10 | 2022-02-08 | 湖南鸿辉科技有限公司 | Construction platform for cast-in-place pile hard rock construction and construction method thereof |
| CN114991656A (en) * | 2022-05-26 | 2022-09-02 | 潍坊盛德石油机械制造有限公司 | Screw drill capable of preventing drill water hole from being blocked |
| CN116086873A (en) * | 2023-04-10 | 2023-05-09 | 河北鹏钜建设工程有限公司 | Highway detects coring device |
| CN116086873B (en) * | 2023-04-10 | 2023-06-20 | 河北鹏钜建设工程有限公司 | Highway detects coring device |
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Application publication date: 20190618 |
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