CN106112051B - A kind of boring method - Google Patents
A kind of boring method Download PDFInfo
- Publication number
- CN106112051B CN106112051B CN201610542258.3A CN201610542258A CN106112051B CN 106112051 B CN106112051 B CN 106112051B CN 201610542258 A CN201610542258 A CN 201610542258A CN 106112051 B CN106112051 B CN 106112051B
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- China
- Prior art keywords
- shrapnel
- drilling
- rod
- support arm
- drilling rod
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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.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 93
- 238000005452 bending Methods 0.000 claims abstract description 15
- 230000001360 synchronised effect Effects 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 7
- 239000012212 insulator Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/003—Attachments
- B23B45/005—Flexible shafts
Abstract
The invention discloses a kind of boring method, a kind of boring method, it is characterised in that step is as follows：A, by drilling rod and drive link axially adjacent to bending shrapnel；B, support arm probes into the opposite narrow space in two sides, makes drill rod axis vertical with being intended to bore surfaces, and reach drilling rod front end and be intended to bore position；C, turn on the power source drive drive link, shrapnel, drilling rod synchronous rotary, makes drilling rod feed drilling using support arm and shrapnel force；D, after rod boring is more than 2/3rds, support arm is lifted, two arc panels of driving, which are drawn close, stretches shrapnel, continues to be exerted a force with support arm, drill bit is entered drilling completely, and shrapnel stretches lower end and enters drilling, makes drill bit continue to be fed；E, given depth is gone to, lifts support arm, two arc panels of driving separate, and shrapnel bending, drives drilling rod to portal, withdraw from support arm, complete drilling.The present invention can drill.
Description
Technical field
The present invention relates to a kind of narrow space boring bar tool and method, the brill more particularly to a kind of drill bit and with the drill bit
Aperture apparatus and its narrow space boring method.
Background technology
Usually need to drill on the side wall in narrow space sometimes in production and living, and require drilling depth larger,
Existing equipment is difficult to complete, and is still solved up for technological innovation.
The content of the invention
To solve the above-mentioned problems, the drilling equipment and its narrow space the present invention provides a kind of drill bit and with the drill bit
Boring method.
The technical solution adopted by the present invention is：A kind of drill bit, it is characterised in that including drilling rod and drive link, drive link is located at
Above drilling rod and both are coaxial, and circumferentially equidistant above drilling rod that at least two shrapnels are distributed with, shrapnel lower end is hinged on drilling rod upper end,
Shrapnel upper end is hinged on drive link lower end, and along the outside lateral bend of drilling rod radial direction, shrapnel cross section is arc core court at shrapnel middle part
To the arc of drill rod axis.
Further, the drive link axle center is equipped with axial upper prism hole, and two shrapnel lower ends are hinged on a connector
On, connector is equipped with the lower prism hole coaxial with upper prism hole, is equipped with above drilling rod and is connected with the prism of lower prism hole adaptation
End.
Further, the upper prism hole and lower prism hole cross section congruence, drive link, lower prism hole are run through in upper prism hole
Through connector, prism connecting pin is leant out through lower prism hole above connector, and shrapnel bending prism connecting pin leans out position
It can be inserted into upper prism hole.
Further, it is furnished with an axle sleeve on the drilling rod, axle sleeve upper end is equipped with an inside trumpet mouth.
A kind of drilling equipment with the drill bit, it is characterised in that the drive link is connected with the drive rod being coaxial therewith, and drives
Lever is connected in a drive housing, and the support arm vertical with drive rod axis is connected with housing, parallel with support arm to be equipped with driving
The transmission mechanism of drive rod, transmission mechanism are connected with power source.
Further, the shrapnel rotational trajectory both sides are equipped with arc core towards rotational trajectory axis and axis and drill rod axis
Arc panel that is parallel or overlapping, two arc panel arc dorsal parts are connected to actuating arm, and hinged two actuating arms middle part is in X
Type.
Further, the shrapnel rotational trajectory both sides are equipped with arc core towards rotational trajectory axis and axis and drill rod axis
Arc panel that is parallel or overlapping, two arc panel arc dorsal parts are connected to actuating arm, and two actuating arms are L-shaped, and two actuating arms are free
End is connected to that teeth are opposite and possess the parallel rack in gap, equipped with the tooth engaged respectively with two racks in the gap in
Wheel, gear are connected with drive division, and two racks coincide in opposite two sliding slot on a supporter respectively.
Further, the arc panel is double-decker, and perforate is distributed with internal layer, and ball is equipped between outer layer and internal layer,
A ball part leans out perforate.
Further, body is stretched in the arc panel circumferential direction both ends equipped with the arcuate extents for being gradually distance from axis.
Drilling equipment with the drill bit, its narrow space boring method, it is characterised in that step is as follows：
A, by drilling rod and drive link axially adjacent to bending shrapnel；
B, support arm probes into the opposite narrow space in two sides, makes drill rod axis vertical with being intended to bore surfaces, and arrive drilling rod front end
Up to desire bore position；
C, turn on the power source drive drive link, shrapnel, drilling rod synchronous rotary, is fed drilling rod using support arm and shrapnel force
Drilling；
D, after rod boring is more than 2/3rds, support arm is lifted, two arc panels of driving, which are drawn close, stretches shrapnel, continues with branch
Arm exerts a force, and drill bit is entered drilling completely, and shrapnel stretches lower end and enters drilling, makes drill bit continue to be fed；
E, given depth is gone to, lifts support arm, two arc panels of driving separate, and shrapnel bending, drives drilling rod to portal, withdraw from branch
Arm, completes drilling.
The present invention can drill out deeper hole using the flexible of shrapnel on the side wall in narrow space.
Brief description of the drawings
Fig. 1 is one overall structure diagram of the embodiment of the present invention.
Fig. 2 is two overall structure diagram of the embodiment of the present invention.
Fig. 3 is two decomposition diagram of the embodiment of the present invention.
Fig. 4 is three overall structure diagram of the embodiment of the present invention.
Fig. 5 is four overall structure diagram of the embodiment of the present invention.
Fig. 6 is five overall structure diagram of the embodiment of the present invention.
Fig. 7 is five decomposition texture schematic diagram of the embodiment of the present invention.
Figure label title：1 drilling rod；2 drive links；3 shrapnels；4 first articulated shafts；5 second articulated shafts；Prism hole on 6；7
Connector；8 times prism holes；9 prism connecting pins；10 drive rods；11 drive housing；12 support arms；13 transmission shafts；14 helical gears；15
Actuating arm；16 the 3rd articulated shafts；17 actuating arms；18 racks；19 gears；20 supporters；21 sliding slots；22 axle sleeves；23 inside trumpet mouths；
24 arcuate extents stretch body；25 internal layers；26 perforates；27 outer layers；28 balls；29 arc panels.
Embodiment
As shown in Figure 1, a kind of drill bit is equipped with drilling rod 1 and drive link 2, drive link is located on drilling rod the embodiment of the present invention one
Side and both are coaxial, circumferentially equidistant above drilling rod that at least two shrapnels 3 are distributed with, the present embodiment be symmetrical two panels, in fact
It is alternatively more than three pieces when applying, shrapnel lower end is hinged on drilling rod upper end by the first articulated shaft 4, and two shrapnel lower ends also may be used during implementation
Drilling rod upper end is hinged on by two articulated shafts respectively, shrapnel upper end is hinged on drive link lower end by the second articulated shaft 5, implements
When two shrapnel upper ends also can be hinged on drive link lower end by two articulated shafts respectively, it is outside along drilling rod radial direction in the middle part of shrapnel
Lateral bend, shrapnel cross section are arc of the arc core towards drill rod axis.The present embodiment drive link is used to connect power source, utilizes bullet
It piece flexible and can probe into drilling, deeper hole can be drilled out on the side wall in narrow space.
As shown in Figure 2,3, a kind of drive link axle center of drill bit is equipped with axial upper prism hole 6 to the embodiment of the present invention two,
Two shrapnel lower ends are hinged on a connector 7, and connector is equipped with the lower prism hole 8 coaxial with upper prism hole, drilling rod top
Equipped with the prism connecting pin 9 being adapted to lower prism hole, upper prism hole and lower prism hole cross section congruence, upper prism hole is through transmission
Connector is run through in bar, lower prism hole, and prism connecting pin is leant out through lower prism hole above connector, the connection of shrapnel bending prism
End leans out position and can be inserted into prism hole, it is possible to achieve synchronous hardness is drivingly connected when shrapnel flexing is larger in the early stage, drive link
The drive rod 10 being coaxial therewith is connected with, drive rod is connected in a drive housing 11, is connected with housing and drive rod axis
Vertical support arm 12, the transmission mechanism for being equipped with driving drive rod parallel with support arm, the present embodiment transmission mechanism is transmission shaft 13, is passed
Moving axis is placed in tubular support arm, and drive rod and transmission shaft links by the driving of helical gear 14, and when implementation can also be using belt etc.
Type of drive, transmission mechanism are connected with power source, and power source can make manually or electrically machine, and shrapnel rotational trajectory both sides are equipped with arc
The heart is towards rotational trajectory axis and axis is parallel with drill rod axis or the arc panel 29 of coincidence, two arc panel arc dorsal parts connect respectively
Have an actuating arm 15, hinged by the 3rd articulated shaft 16 in the middle part of two actuating arms is in X-type, can drive two arc panels draw close or
Separation, when drilling out deeper hole on needing side wall in narrow space, by drilling rod and drive link axially adjacent to making shrapnel curved
Song, then support arm is probeed into the opposite narrow space in two sides, make drill rod axis vertical with being intended to bore surfaces, and reach drilling rod front end and be intended to
Bore position, starts power source and drives drive link, shrapnel, drilling rod synchronous rotary, is fed drilling rod using support arm and shrapnel force
Drill, after rod boring certain depth, lift support arm, two arc panels of driving, which are drawn close, stretches shrapnel, continues to be exerted a force with support arm, makes
Drill bit enters drilling completely, and shrapnel stretches lower end and enters drilling, makes drill bit continue to be fed, go to given depth, lifts support arm, driving two
Arc panel separates, and shrapnel bending, drives drilling rod to portal, withdraw from support arm, complete drilling.
The embodiment of the present invention three is as shown in figure 4, provide the structure of another driving arc panel, two arcs for embodiment two
Plate arc dorsal part is connected to actuating arm 17, and two actuating arms are L-shaped, two actuating arm free ends be connected to teeth it is opposite and
Possess the parallel rack 18 in gap, be equipped with gap and be connected with drive division with two rack meshed gears 19, gear respectively, driven
Dynamic portion can make manual rotation mechanism to be motor, and two racks coincide opposite two on a supporter 20 respectively
In sliding slot 21, gear rotation can preferably control two arc panels to draw close or separate.
The embodiment of the present invention four is furnished with an axle sleeve 22, axle sleeve as shown in figure 5, on the basis of embodiment two on drilling rod
Upper end is equipped with an inside trumpet mouth 23, and what axle sleeve played has the technical effect that：1, shrapnel can be guided to enter hole；2, apply one to shrapnel
Suitable elastic force so that shrapnel is extended along the direction deformation in hole；3, it is possible to reduce shrapnel destroys drilled edge when entering hole.Use
When, it is preferable that axle sleeve is first fixed on desire bore position, then, then drill.
Body 24 is stretched in arc panel circumferential direction both ends equipped with the arcuate extents for being gradually distance from axis, the technology which is played
Effect includes：1, play guiding function, it is possible to reduce the hard collision with shrapnel.2, the work of pretreatment can be played to shrapnel deformation
To be deformed upon with, shrapnel can just allow drill bit deeply or to be extracted along drill axis direction, and arcuate extents stretch body 24 can be with
An elastic force is previously applied to shrapnel, allows shrapnel that a small deformation occurs, continues to apply elastic force to shrapnel beneficial to arc panel.
Arc panel is double-decker on the basis of example IV as shown in Figure 6,7 by the embodiment of the present invention five, internal layer
25 are distributed with perforate 26, and ball 28 is equipped between outer layer 27 and internal layer, and a ball part leans out perforate, and such technical characteristic can
Included with the technique effect reached：1, reduce shrapnel rotational resistance, 2, beneficial to shrapnel deformation with achieve the purpose that bore it is deeper can hole,
Because ball can not only roll in the horizontal direction, and can be rolled with vertical direction, that is to say, that ball can not only hang down
Directly with the plane rolling of drill bit axial direction, can also be rolled parallel with drill axis direction.3, can extend shrapnel uses the longevity
Life.4, the heat dissipation effect of shrapnel can be improved.
The drilling equipment of the above-mentioned drill bit of band of the present invention, narrow space boring method, its step are as follows：
A, by drilling rod and drive link axially adjacent to bending shrapnel；
B, support arm probes into the opposite narrow space in two sides, makes drill rod axis vertical with being intended to bore surfaces, and arrive drilling rod front end
Up to desire bore position；
C, turn on the power source drive drive link, shrapnel, drilling rod synchronous rotary, is fed drilling rod using support arm and shrapnel force
Drilling；
D, after rod boring is more than 2/3rds, support arm is lifted, two arc panels of driving, which are drawn close, stretches shrapnel, continues with branch
Arm exerts a force, and drill bit is entered drilling completely, and shrapnel stretches lower end and enters drilling, makes drill bit continue to be fed；
E, given depth is gone to, lifts support arm, two arc panels of driving separate, and shrapnel bending, drives drilling rod to portal, withdraw from branch
Arm, completes drilling.
It is also possible that：
The drilling equipment of the above-mentioned drill bit of band of the present invention, narrow space boring method, its step are as follows：
A, by drilling rod and drive link axially adjacent to bending shrapnel；
B, bore position fixed hub 22 is being intended to, the axis and drill rod axis of axle sleeve 22 overlap, and it is opposite that support arm probes into two sides
Narrow space, make drill rod axis be intended to bore surfaces it is vertical, and make drilling rod front end reach be intended to bore position；
Bore position fixed hub 22 is being intended to, the mode that can be gummed down is fixed.
C, turn on the power source drive drive link, shrapnel, drilling rod synchronous rotary, is fed drilling rod using support arm and shrapnel force
Drilling；
D, after rod boring is more than 2/3rds, support arm is lifted, two arc panels of driving, which are drawn close, stretches shrapnel, continues with branch
Arm exerts a force, and drill bit is entered drilling completely, and shrapnel stretches lower end and enters drilling, makes drill bit continue to be fed；
E, given depth is gone to, lifts support arm, two arc panels of driving separate, and shrapnel bending, drives drilling rod to portal, withdraw from branch
Arm, completes drilling.
In power domain, it is often necessary to power line is fixed in slit, conventional way is such：The first step, narrow
Standing screw in seam, second step, is fixedly connected with insulator screw rod, the 3rd step, and power line is fixedly connected with insulator.
Because standing screw is usually not sufficiently strong in slit, screw rod comes off, and then brings fiber crops to power Transmission
It is tired.
The invention also discloses a kind of fixing means of power line, then this method can fix spiral shell in slit internal drilling
Bar, such method, can allow screw rod more firm.Its step is as follows：
A, by drilling rod and drive link axially adjacent to bending shrapnel；
B, bore position fixed hub 22 is being intended to, the axis and drill rod axis of axle sleeve 22 overlap, and it is opposite that support arm probes into two sides
Narrow space, make drill rod axis be intended to bore surfaces it is vertical, and make drilling rod front end reach be intended to bore position；
Bore position fixed hub 22 is being intended to, the mode that can be gummed down is fixed, and can also use gripping means grips.
Fixed hub 22 is not essential, but is preferred step.
C, turn on the power source drive drive link, shrapnel, drilling rod synchronous rotary, is fed drilling rod using support arm and shrapnel force
Drilling；
D, after rod boring is more than 2/3rds, support arm is lifted, two arc panels of driving, which are drawn close, stretches shrapnel, continues with branch
Arm exerts a force, and drill bit is entered drilling completely, and shrapnel stretches lower end and enters drilling, makes drill bit continue to be fed；
E, given depth is gone to, lifts support arm, two arc panels of driving separate, and shrapnel bending, drives drilling rod to portal, withdraw from branch
Arm, completes drilling,
F, cement mortar is injected into hole, and screw rod is inserted into cement mortar, after hardening of cement, insulator and
Screw rod is fixedly connected, and then, power line is fixedly connected with insulator.
Those skilled in the art should know：1, the part of screw rod is absorbed in cement mortar, another part leak out in order to
To be fixedly connected with insulator.2, insulator can be ring-shaped, mesoporous sets threaded ceramic.3, insulator and electric power
Line, which is fixedly connected, belongs to the prior art.
It is only present pre-ferred embodiments in summary, all equivalent modification done according to the application and the prior art additions are equal
It is considered as the technology of the present invention category.
Claims (1)
1. a kind of boring method, the method is applied to a kind of drilling equipment,
The drilling equipment includes drilling rod and drive link, and drive link is located above drilling rod and both are coaxial, circumferential etc. above drilling rod
Away from least two shrapnels are distributed with, shrapnel lower end is hinged on drilling rod upper end, and shrapnel upper end is hinged on drive link lower end, shrapnel middle part
Along the outside lateral bend of drilling rod radial direction, shrapnel cross section is arc of the arc core towards drill rod axis, and the drive link is connected with
The drive rod being coaxial therewith, drive rod are connected in a drive housing, are connected with drive housing vertical with drive rod axis
Support arm, the transmission mechanism for being equipped with driving drive rod parallel with support arm, transmission mechanism are connected with power source,
The shrapnel rotational trajectory both sides be equipped with arc core towards rotational trajectory axis and axis it is parallel with drill rod axis or coincidence
Arc panel, two arc panel arc dorsal parts are connected to actuating arm, and hinged two actuating arms middle part is in X-type,
It is characterized in that:
The step of boring method is：
A, by drilling rod and drive link axially adjacent to bending shrapnel；
B, support arm probes into the opposite narrow space in two sides, makes drill rod axis vertical with being intended to bore surfaces, and reach drilling rod front end and be intended to
Bore position；
C, turn on the power source drive drive link, shrapnel, drilling rod synchronous rotary, bores drilling rod feed using support arm and shrapnel force
Hole；
D, after rod boring is more than 2/3rds, support arm is lifted, two arc panels of driving, which are drawn close, stretches shrapnel, continues to be applied with support arm
Power, makes drill bit enter drilling completely, and shrapnel stretches lower end and enters drilling, makes drill bit continue to be fed；
E, given depth is got into, lifts support arm, two arc panels of driving separate, and shrapnel bending, drives drilling rod to portal, withdraw from support arm,
Complete drilling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610542258.3A CN106112051B (en) | 2016-07-11 | 2016-07-11 | A kind of boring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610542258.3A CN106112051B (en) | 2016-07-11 | 2016-07-11 | A kind of boring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106112051A CN106112051A (en) | 2016-11-16 |
| CN106112051B true CN106112051B (en) | 2018-05-08 |
Family
ID=57283628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610542258.3A Active CN106112051B (en) | 2016-07-11 | 2016-07-11 | A kind of boring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106112051B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201020555Y (en) * | 2007-04-03 | 2008-02-13 | 中国长江动力公司(集团) | Super thin type axial drilling equipment |
| CN202031482U (en) * | 2011-05-13 | 2011-11-09 | 乔国华 | Square piston type anchoring and chambering drilling rig |
| CN202387988U (en) * | 2011-12-15 | 2012-08-22 | 西安通源石油科技股份有限公司 | Device for processing inner blind hole of perforating gun for oil-gas well |
| CN203509252U (en) * | 2013-10-09 | 2014-04-02 | 袁沛良 | Tool |
| CN203621553U (en) * | 2013-11-20 | 2014-06-04 | 苏州蓝王机床工具科技有限公司 | Novel automatic drilling machine for insertion sheets |
| CN104879063A (en) * | 2015-06-01 | 2015-09-02 | 王振环 | Hole expanding device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20080775L (en) * | 2008-02-13 | 2009-08-14 | Jan Alexander Fretwurst | Flexible joint |
| US8789447B2 (en) * | 2008-09-18 | 2014-07-29 | Eazypower Corporation | Extension shaft for hold a tool for rotary driven motion |
-
2016
- 2016-07-11 CN CN201610542258.3A patent/CN106112051B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201020555Y (en) * | 2007-04-03 | 2008-02-13 | 中国长江动力公司(集团) | Super thin type axial drilling equipment |
| CN202031482U (en) * | 2011-05-13 | 2011-11-09 | 乔国华 | Square piston type anchoring and chambering drilling rig |
| CN202387988U (en) * | 2011-12-15 | 2012-08-22 | 西安通源石油科技股份有限公司 | Device for processing inner blind hole of perforating gun for oil-gas well |
| CN203509252U (en) * | 2013-10-09 | 2014-04-02 | 袁沛良 | Tool |
| CN203621553U (en) * | 2013-11-20 | 2014-06-04 | 苏州蓝王机床工具科技有限公司 | Novel automatic drilling machine for insertion sheets |
| CN104879063A (en) * | 2015-06-01 | 2015-09-02 | 王振环 | Hole expanding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106112051A (en) | 2016-11-16 |
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Effective date of registration: 20180411 Address after: 317523 floor two, No. 68, A District, Chencun village, Wenling, Taizhou, Zhejiang Applicant after: TAIZHOU DINGTUO INDUSTRIAL DESIGN Co.,Ltd. Address before: 830002 College of Applied Engineering, Urumqi Vocational University, Urumqi, the Xinjiang Uygur Autonomous Region, No. 723 Applicant before: Chen Ting |
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Application publication date: 20161116 Assignee: WENZHOU QIBANG ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co.,Ltd. Assignor: TAIZHOU DINGTUO INDUSTRIAL DESIGN Co.,Ltd. Contract record no.: X2021330000073 Denomination of invention: A drilling method Granted publication date: 20180508 License type: Common License Record date: 20210817 |
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Application publication date: 20161116 Assignee: WENZHOU HAILAN INDUSTRIAL DESIGN Co.,Ltd. Assignor: TAIZHOU DINGTUO INDUSTRIAL DESIGN Co.,Ltd. Contract record no.: X2021330000355 Denomination of invention: A drilling method Granted publication date: 20180508 License type: Common License Record date: 20210929 |
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Effective date of registration: 20240326 Address after: 105 Sanguanmiao Village, Wufengshan Street Office, Changqing District, Jinan City, Shandong Province, 250000 Patentee after: Zhao Lei Country or region after: China Patentee after: Zhao Chen Address before: 317523 floor two, No. 68, A District, Chencun village, Wenling, Taizhou, Zhejiang Patentee before: TAIZHOU DINGTUO INDUSTRIAL DESIGN Co.,Ltd. Country or region before: China |