CN103161406B - Rock reamer - Google Patents
Rock reamer Download PDFInfo
- Publication number
- CN103161406B CN103161406B CN201310069306.8A CN201310069306A CN103161406B CN 103161406 B CN103161406 B CN 103161406B CN 201310069306 A CN201310069306 A CN 201310069306A CN 103161406 B CN103161406 B CN 103161406B
- Authority
- CN
- China
- Prior art keywords
- hobboing cutter
- cylindricality
- axle
- rock
- correcting
- Prior art date
- 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 - Fee Related
Links
- 239000011435 rock Substances 0.000 title claims abstract description 56
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 12
- 239000002893 slag Substances 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a rock reamer. The rock reamer comprises a hollow central shaft which is connected with a drill rod, a front pilot and a back pilot which are fixedly arranged on the hollow central shaft, and a hobbing cutter which can conduct autorotation and is arranged between the front pilot and the back pilot. A central axis of the hobbing cutter and the central shaft are parallelly arranged, the hobbing cutter comprises a cylindrical section which has a righting function and a front end face formed at the front end of the cylindrical section, and hard alloy teeth used for crushing rocks are evenly distributed on the front end face and the peripheral surface of the cylindrical section. By improving a hobbing cutter structure and arranging positions, the phenomenon that a matched righting machine is additionally arranged on a reamer is effectively avoided, weight of tool is reduced, rotation torsion moment is reduced, cost is lowered, and service life of the tool is prolonged. In addition, the hobbing cutter is clamped or connected between the front pilot and the back pilot in a threaded mode, and therefore disassembly of the hobbing cutter is convenient.
Description
Technical field
The present invention relates to rock crossing project construction field, particularly relate to a kind of rock reamer.
Background technology
At present, in rock crossing project field and mine, well, oilfield applications reaming work progress, often meet rock, reaming is in two ways adopted by each unit in charge of construction or drilling tool manufacturer:
One is oil cone palm welded construction, adopts the problem of this structure to be: 1, during welding, temperature is too high is sealed with damage to gear wheel bearing; 2, change efficiency low, need the gear wheel scrapping to cut off, then weld new gear wheel, often want the time of a couple of days; 3, cone palm back is easy to wearing and tearing, may wear to and to a certain degree worn out for sealing, gear wheel will be caused to lose efficacy, even cause gear wheel to fall in hole, cause drilling accident.
The second is replaceable hob type rock reamer, and replaceable hob type rock reamer solves the problem of wheel and the wearing and tearing of the cone palm back of the body.
But above two kinds of reamers are passing through in rock reaming procedure for large-scale pipeline, if more than 711 pipeline counter bore diameters are more than after 800MM, there is following use problem: reamer adds that supporting centralizer weight is very heavy, drilling tool is beated greatly, driving torque is also very large, when exceed drilling rod can tolerance range time, cause drilling rod to rupture in a large number, process very difficult, even cause boring to scrap.When cutting, rock particles is large, and inconvenient mud carries, and rock slag is piled up in hole simultaneously, causes reaming and trustship difficulty.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind ofly is convenient to change the low and rock reamer of long service life of hobboing cutter, moment of torsion.
In order to solve the problems of the technologies described above, technical scheme of the present invention is as follows:
Described rock reamer comprise the hollow of jointed rod central axis, be packed in front correcting on described central axis and rear correcting and be arranged between described front correcting and rear correcting and can the hobboing cutter of rotation, central axis and the described central axis of described hobboing cutter be arranged in parallel, described hobboing cutter comprises the cylindrical section with centralizing function and is formed in the front end face of this cylindrical section front end, and the outer peripheral face of described front end face and cylindrical section is evenly equipped with the hard-metal insert for fractured rock.
Described hobboing cutter comprises shell and is arranged on the axle in the middle part of shell, between shell and axle, be also provided with bearing and sealing device.
Described hobboing cutter is at least provided with three at described central axis circumferencial direction, and described front correcting and rear correcting are all at least provided with three at described central axis circumferencial direction.
According to one embodiment of present invention, described leading just rearward is provided with on one and coils, described rear correcting front portion is provided with a low bottom-disc, coil on described, the interval of two described front correctings is all fixedly connected with a upper cutter head, circular hole on one is formed in the middle part of described upper cutter head, bottom is formed with draw-in groove on, on described low bottom-disc, the interval of every two described rear correctings is all fixedly connected with tool rest, circular hole is formed in the middle part of described lower tool rest, upper end is formed with a lower bayonet slot, on described, the center line of lower circular hole overlaps, on described, lower bayonet slot is the square circular groove that side is formed with an opening.
Described hobboing cutter is cylindricality hobboing cutter, and the front end face of this cylindricality hobboing cutter is sphere or the conical surface, and this cylindricality hobboing cutter is arranged between described upper and lower tool rest by an alignment pin, and described cylindricality hobboing cutter can rotate relative to its axle.
The middle part hollow of described cylindricality cutter shaft, described alignment pin successively through upper circular hole, the axle of cylindricality hobboing cutter and lower circular hole and the two ends of this alignment pin to be in respectively in described upper and lower circular hole and removably fixing by fastening devices.
The two ends of described alignment pin are removably fixed in described upper and lower circular hole respectively by a pin.
The shaft shoulder gabarit at the axle two ends of described cylindricality hobboing cutter is the square circular matched with upper and lower draw-in groove, and the shaft shoulder at the axle two ends of this cylindricality hobboing cutter to snap in respectively in upper and lower draw-in groove and axle is fixed with upper and lower tool rest circumference.
Adopt technique scheme, because hobboing cutter and central axis be arranged in parallel, hobboing cutter is also provided with cylindrical section, such structure serves the effect of roller centralizer, thus avoid the centralizer adding assembly set on reamer, alleviate instrument weight, reduce driving torque, reduce cost, enhance the application life of instrument.The shell of described hobboing cutter can its axle rotation relatively, and the hobboing cutter of circumferential uniform setting and forward and backward correcting can make the stability of instrument stronger, and functional reliability is high.Described cylindricality hobboing cutter is arranged on upper and lower tool rest by alignment pin, does not need other welding, facilitates and changes cylindricality hobboing cutter; There is not the problem of oil cone palm back of the body effect of attrition sealing in such structure, effectively raises the application life of cylindricality hobboing cutter; Meanwhile, the cylindrical section of cylindricality hobboing cutter plays the effect of roller centralizer, does not need other supporting centralizer, significantly reduces drilling tool weight, effectively reduce moment of torsion, stability of rotation, the risk of drill rod breaking is dropped to minimum.In addition, the hard-metal insert of cylindricality hobboing cutter front end face cuts fractured rock, reaches the object of reaming in rock, the bulky grain rock slag of the hard-metal insert on cylindrical section in rolling process under broken cutting, facilitate mud to carry, achieve the combination function of reamer rock cutting, righting and detritus.
According to another embodiment of the invention, described rock reamer comprise the hollow of jointed rod central axis, be packed in front correcting on described central axis and rear correcting and be arranged between described front correcting and rear correcting and can the hobboing cutter of rotation, central axis and the described central axis of described hobboing cutter be arranged in parallel, described hobboing cutter comprises the cylindrical section with centralizing function and is formed in the front end face of this cylindrical section front end, and the outer peripheral face of described front end face and cylindrical section is evenly equipped with the hard-metal insert for fractured rock.
Described hobboing cutter comprises shell and is arranged on the axle in the middle part of shell, between shell and axle, be also provided with bearing and sealing device.
Described hobboing cutter is at least provided with three at described central axis circumferencial direction, and described front correcting and rear correcting are all at least provided with three at described central axis circumferencial direction.
Described hobboing cutter is conical hob, the front end face of this conical hob is sphere or the conical surface, the bottom of the axle of described conical hob is fixedly connected with a contiguous block, this contiguous block bottom is fixedly connected with one or six sides, described contiguous block is back taper and external surface is formed with screw thread, the axle of described conical hob is threaded in rear correcting top by contiguous block, and described conical hob can rotate relative to its axle.
The headspace installing conical hob is reserved with between described front correcting and conical hob, described rear correcting upper end is provided with a chassis, this chassis is welded with a base be threaded with contiguous block, this base bottom is provided with the shrinkage pool for placing six sides, and the volume of this shrinkage pool is greater than the volume of six sides and can holds spanner in shrinkage pool, rotate six sides.
Adopt technique scheme, because hobboing cutter and central axis be arranged in parallel, hobboing cutter is also provided with cylindrical section, such structure serves the effect of roller centralizer, thus avoid the centralizer adding assembly set on reamer, alleviate instrument weight, reduce driving torque, reduce cost, enhance the application life of instrument.The shell of described hobboing cutter can its axle rotation relatively, and the hobboing cutter of circumferential uniform setting and forward and backward correcting can make the stability of instrument stronger, and functional reliability is high.Described conical hob is installed together by screw thread and rear correcting, does not need welding, rotates six sides get final product conical hob for convenience detach by spanner in shrinkage pool; There is not the problem of oil cone palm back of the body effect of attrition sealing in such structure, effectively raises the conical hob life-span; Meanwhile, the cylindrical section of conical hob plays the effect of roller centralizer, does not need other supporting centralizer, significantly reduces drilling tool weight, effectively reduce moment of torsion, stability of rotation, the risk of drill rod breaking is dropped to minimum.In addition, hard-metal insert on conical hob cone front end face cuts fractured rock, reach the object of reaming in rock, the bulky grain rock slag of hard-metal insert on cylindrical section in rolling process under broken cutting, facilitate mud to carry, achieve the combination function of reamer rock cutting, righting and detritus.
In sum, the present invention, by the improvement of hob-cutter structure and the layout of position, effectively avoids the centralizer adding assembly set on reamer, alleviates instrument weight, reduce driving torque, reduce cost, enhance the application life of instrument; In addition, hobboing cutter clamps or is threaded between front correcting and rear correcting, facilitates the dismounting of hobboing cutter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first embodiment of rock reamer of the present invention;
Fig. 2 is the structural representation of cylindricality hobboing cutter in Fig. 1;
Fig. 3 is the structural representation of the second embodiment of rock reamer of the present invention;
Fig. 4 is the structural representation of conical hob in Fig. 3.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following public specific embodiment.
Fig. 1 and Figure 2 shows that one embodiment of the present of invention.As shown in the figure, this reamer comprises the central axis 1 of the hollow that two ends are communicated with drilling rod, front correcting 2, rear correcting 3 and cylindricality hobboing cutter 5.Described central axis 1 circumferencial direction is provided with at least three described front correctings 2 and at least three described rear correctings 3 and three described front correctings 2 and the circumferential uniform setting of rear correcting 3, at least be provided with three cylindricality hobboing cutters 5 between described front correcting 2 and rear correcting 3 and three circumferential uniform settings of cylindricality hobboing cutter 5, central axis and the central axis 1 of this cylindricality hobboing cutter 5 be arranged in parallel.
Described cylindricality hobboing cutter 5 comprises shell and is arranged on the axle in the middle part of shell, bearing (not shown) and sealing device (not shown) is also provided with between shell and axle, described shell can rotate relative to its axle, described cylindricality hobboing cutter 5 shell comprises cylindrical section and is formed in the front end face of this cylindrical section front end, the outer peripheral face of described front end face and cylindrical section is evenly equipped with the hard-metal insert 4 for fractured rock, and described front end face is outwardly sphere.Hard-metal insert 4 on front end face cuts fractured rock, reaches the object of reaming in rock, and the bulky grain rock slag of the hard-metal insert 4 on cylindrical section in rolling process under broken cutting, facilitates mud to carry.Meanwhile, the cylindrical section of cylindricality hobboing cutter 5 plays the effect of roller centralizer, does not need other supporting centralizer, significantly reduces drilling tool weight, effectively reduce moment of torsion, stability of rotation, the risk of drill rod breaking is dropped to minimum.
Described front correcting 2 rear portion is provided with on one and coils 13, described rear correcting 3 front portion is provided with a low bottom-disc 14, on described upper dish 13, the interval of every two described front correctings 2 is all fixedly connected with a upper cutter head 7, circular hole on one is formed in the middle part of described upper cutter head 7, bottom is formed with draw-in groove on, on described low bottom-disc 14, the interval of every two described rear correctings 3 is all fixedly connected with tool rest 8, circular hole is formed in the middle part of described lower tool rest 8, upper end is formed with a lower bayonet slot, on described, the center line of lower circular hole overlaps, on described, lower bayonet slot is the square circular groove that side is formed with an opening.
This cylindricality hobboing cutter 5 is arranged between described upper and lower tool rest 7,8 by an alignment pin 6, and described cylindricality hobboing cutter 5 can rotate relative to its axle.The middle part hollow of described cylindricality hobboing cutter 5 axle, described alignment pin 6 successively through upper circular hole, the axle of cylindricality hobboing cutter 5 and lower circular hole and the two ends of this alignment pin 6 to be in respectively in described upper and lower circular hole and removably fixing by fastening devices.
Preferably, the two ends of described alignment pin 6 are removably fixed in described upper and lower circular hole respectively by a pin (not shown).
The shaft shoulder gabarit at the axle two ends of described cylindricality hobboing cutter 5 is the square circular matched with upper and lower draw-in groove, and the shaft shoulder at the axle two ends of this cylindricality hobboing cutter 5 to snap in respectively in upper and lower draw-in groove and axle is fixed with upper and lower tool rest 7,8 circumference.
When installing cylindricality hobboing cutter 5, aim at the upper and lower draw-in groove opening on upper and lower tool rest 7,8 and first cylindricality hobboing cutter put between upper and lower tool rest 7,8 along opening, again alignment pin 6 is inserted in upper circular hole, the axle of cylindricality hobboing cutter 5 and lower circular hole, be fixed in described upper and lower circular hole respectively by a pin (not shown) at alignment pin 6 two ends, namely cylindricality hobboing cutter 5 installs; When unloading cylindricality hobboing cutter 5, first pin is extracted, then take out alignment pin 6 and cylindricality hobboing cutter 5 successively.
By handling alignment pin 6, cylindricality hobboing cutter can be changed easily; Alignment pin 6 and upper and lower tool rest 7,8 dismountable fixing, the shaft shoulder and the upper and lower tool rest 7,8 at cylindricality hobboing cutter 5 axle two ends are also fixed by square circular structure, such structure can bring the moment of torsion of cylindricality hobboing cutter by Delivery Center axle stably, enhances the reliability of work.
In rock reaming work progress, rig drives drilling rod to rotate clockwise, drilling rod band central shaft 1 rotates clockwise, cylindricality hobboing cutter 5 revolves round the sun clockwise with central axis 1, meanwhile cylindricality hobboing cutter 5 produces counterclockwise rotation under the effect of rock reaction force, and the hard-metal insert 4 on this cylindricality hobboing cutter 5 front end face cuts fractured rock, reaches the object of reaming in rock, the bulky grain rock slag of hard-metal insert 4 on cylindrical section in rolling process under broken cutting, facilitates mud to carry.
Fig. 3 and Figure 4 shows that another embodiment of the present invention.As shown in the figure, this reamer comprises the central axis 1 of the hollow that two ends are communicated with drilling rod, front correcting 2, rear correcting 3 and conical hob 9.Described central axis 1 circumferencial direction is provided with at least three described front correctings 2 and at least three described rear correctings 3 and three described front correctings 2 and the circumferential uniform setting of rear correcting 3, at least be provided with three conical hobs 9 between described front correcting 2 and rear correcting 3 and three circumferential uniform settings of conical hob 9, central axis and the central axis 1 of this conical hob 9 be arranged in parallel.
Described conical hob 9 comprises shell and is arranged on the axle in the middle part of shell, bearing (not shown in FIG.) and sealing device (not shown in FIG.) is also provided with between shell and axle, described shell can rotate relative to its axle, described conical hob 9 shell comprises cylindrical section and is formed in the front end face of this cylindrical section front end, the outer peripheral face of described front end face and cylindrical section is evenly equipped with the hard-metal insert 4 for fractured rock, and described front end face is the outwardly conical surface.Hard-metal insert 4 on front end face cuts fractured rock, reaches the object of reaming in rock, and the bulky grain rock slag of the hard-metal insert 4 on cylindrical section in rolling process under broken cutting, facilitates mud to carry.Meanwhile, the cylindrical section of conical hob 9 plays the effect of roller centralizer, does not need other supporting centralizer, significantly reduces drilling tool weight, effectively reduce moment of torsion, stability of rotation, the risk of drill rod breaking is dropped to minimum.
Described conical hob 9 axle bottom is fixedly connected with a contiguous block 10, this contiguous block 10 bottom is fixedly connected with one or six sides 11, described contiguous block 10 is for back taper and external surface is formed with screw thread, described conical hob 9 is threaded in rear correcting 3 top by contiguous block 10, and described conical hob 9 can rotate relative to its axle.The headspace installing conical hob is reserved with between described front correcting 2 and conical hob 9, described rear correcting 3 upper end is connected with a chassis 15, this chassis 15 upper weld has a base 12 be threaded with contiguous block 10, this base 12 bottom is provided with the shrinkage pool for placing six sides 11, and the volume of this shrinkage pool is greater than the volume of six sides 11 and can holds spanner in shrinkage pool, rotate six sides 11.
At installation conical hob 9, only contiguous block 10 precession base 12 can need be realized the fixing of conical hob 9 and device, during dismounting, by spanner clamping six side 11 and turn six side 11 conical hob 9 is screwed out, convenient disassembly.
In rock reaming work progress, rig drives drilling rod to rotate clockwise, drilling rod band central shaft 1 rotates clockwise, conical hob 9 revolves round the sun clockwise with central axis 1, meanwhile conical hob 9 produces counterclockwise rotation under the effect of rock reaction force, and the hard-metal insert 4 on this conical hob 9 front end face cuts fractured rock, reaches the object of reaming in rock, the bulky grain rock slag of hard-metal insert 4 on cylindrical section in rolling process under broken cutting, facilitates mud to carry.
In above-mentioned two embodiments, the front end face preferred structure of described cylindricality hobboing cutter 5 is sphere, but also can be chosen as the conical surface or other have the structure of effect same; The front end face preferred structure of described conical hob 9 is the conical surface, but also can be chosen as sphere or other have the structure of effect same.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a rock reamer, comprise the central axis (1) of the hollow of jointed rod, be packed in front correcting (2) on described central axis and rear correcting (3) and be arranged between described front correcting (2) and rear correcting (3) and can the hobboing cutter of rotation, it is characterized in that: central axis and the described central axis (1) of described hobboing cutter be arranged in parallel, described hobboing cutter comprises the cylindrical section with centralizing function and the front end face being formed in this cylindrical section front end, the outer peripheral face of described front end face and cylindrical section is evenly equipped with the hard-metal insert (4) for fractured rock, described front correcting (2) rear portion is provided with on one and coils (13), described rear correcting (3) front portion is provided with a low bottom-disc (14), on described upper dish (13), the interval of every two described front correctings (2) is all fixedly connected with a upper cutter head (7), on described low bottom-disc (14), the interval of every two described rear correctings (3) is all fixedly connected with tool rest (8), described hobboing cutter be removably disposed in described on, lower tool rest (7, 8) between.
2. according to rock reamer according to claim 1, it is characterized in that: described hobboing cutter comprises shell and is arranged on the axle in the middle part of shell, between shell and axle, be also provided with bearing and sealing device.
3. according to rock reamer according to claim 1, it is characterized in that: described hobboing cutter is at least provided with three at described central axis (1) circumferencial direction, described front correcting (2) and rear correcting (3) are all at least provided with three at described central axis (1) circumferencial direction.
4. according to the rock reamer according to any one of claim 1-3, it is characterized in that: described upper cutter head (7) middle part is formed with circular hole on, bottom is formed with draw-in groove on, described lower tool rest (8) middle part is formed with circular hole, upper end is formed with a lower bayonet slot, the center line of described upper and lower circular hole overlaps, and described upper and lower draw-in groove is the square circular groove that side is formed with an opening.
5. according to rock reamer according to claim 4, it is characterized in that: described hobboing cutter is cylindricality hobboing cutter (5), the front end face of this cylindricality hobboing cutter (5) is sphere or the conical surface, this cylindricality hobboing cutter (5) is arranged between described upper and lower tool rest (7,8) by an alignment pin (6), and described cylindricality hobboing cutter (5) can be rotated relative to its axle.
6. according to rock reamer according to claim 5, it is characterized in that: the middle part hollow of described cylindricality hobboing cutter (5) axle, described alignment pin (6) is successively through upper circular hole, the axle of cylindricality hobboing cutter (5) and lower circular hole, and the two ends of this alignment pin (6) to be in described upper and lower circular hole and removably fixing by fastening devices respectively.
7. according to rock reamer according to claim 6, it is characterized in that: the two ends of described alignment pin (6) are removably fixed in described upper and lower circular hole respectively by a pin.
8. according to rock reamer according to claim 7, it is characterized in that: the shaft shoulder gabarit at the axle two ends of described cylindricality hobboing cutter (5) is the square circular matched with described upper and lower draw-in groove, the shaft shoulder at the axle two ends of this cylindricality hobboing cutter (5) to snap in respectively in upper and lower draw-in groove and axle is fixed with upper and lower tool rest (7,8) circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310069306.8A CN103161406B (en) | 2013-03-05 | 2013-03-05 | Rock reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310069306.8A CN103161406B (en) | 2013-03-05 | 2013-03-05 | Rock reamer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103161406A CN103161406A (en) | 2013-06-19 |
| CN103161406B true CN103161406B (en) | 2015-04-15 |
Family
ID=48584904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310069306.8A Expired - Fee Related CN103161406B (en) | 2013-03-05 | 2013-03-05 | Rock reamer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103161406B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254839A (en) * | 1979-06-21 | 1981-03-10 | Dresser Industries, Inc. | Radial force anti-extrusion device for sealed drill string unit |
| US4378058A (en) * | 1979-04-30 | 1983-03-29 | Smith International, Inc. | Reamer-stabilizer |
| CN2871843Y (en) * | 2006-02-22 | 2007-02-21 | 蒙春晖 | Automatic spiral residue-extracting rotary hobbing cutter |
| CN201003382Y (en) * | 2007-02-02 | 2008-01-09 | 江西铜业集团公司 | Rotary drill stabilizer |
| CN203145834U (en) * | 2013-03-05 | 2013-08-21 | 佟功喜 | Rock reamer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003900227A0 (en) * | 2003-01-20 | 2003-02-06 | Transco Manufacturing Australia Pty Ltd | Attachment means for drilling equipment |
| AU2010307012A1 (en) * | 2009-10-12 | 2012-05-03 | Atlas Copco Secoroc Llc | Downhole tool |
-
2013
- 2013-03-05 CN CN201310069306.8A patent/CN103161406B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4378058A (en) * | 1979-04-30 | 1983-03-29 | Smith International, Inc. | Reamer-stabilizer |
| US4254839A (en) * | 1979-06-21 | 1981-03-10 | Dresser Industries, Inc. | Radial force anti-extrusion device for sealed drill string unit |
| CN2871843Y (en) * | 2006-02-22 | 2007-02-21 | 蒙春晖 | Automatic spiral residue-extracting rotary hobbing cutter |
| CN201003382Y (en) * | 2007-02-02 | 2008-01-09 | 江西铜业集团公司 | Rotary drill stabilizer |
| CN203145834U (en) * | 2013-03-05 | 2013-08-21 | 佟功喜 | Rock reamer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103161406A (en) | 2013-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102773528B (en) | Cutting tool and forming method thereof | |
| CN201034015Y (en) | Rock reamer with helical centralizer | |
| US6138780A (en) | Drag bit with steel shank and tandem gage pads | |
| CN102198535A (en) | Combined composite blade composite drilling and milling cutter | |
| US20170304983A1 (en) | Grinding tool for buttons on a rock drill bit | |
| CN203145834U (en) | Rock reamer | |
| CN103161406B (en) | Rock reamer | |
| CN204024483U (en) | A kind of PDC drill bit | |
| CN202963562U (en) | Hard alloy welding counter bit | |
| CN104594814A (en) | Integral mining drill with replaceable cutting structure | |
| CN211692319U (en) | Deviation-preventing PDC drill bit | |
| CN203213963U (en) | Alloy tooth column polycrystalline diamond compact (PDC) drill bit | |
| CN102162343B (en) | Milling shoes for casing window sidetracking | |
| AU2015213772A1 (en) | Drill bit for horizontal directional drilling | |
| CN203296699U (en) | Oriented PDC drill bit | |
| CN203808836U (en) | Detachable and angle-adjustable cutting tooth assembly for roller bit | |
| CN210422503U (en) | Drilling machine drill rod easy to replace | |
| CN204419044U (en) | The removable integral mining drill bit of cutting structure | |
| CN212689977U (en) | Casing milling drilling tool | |
| CN205936627U (en) | Cutting tool for shield tunneling machine | |
| CN203725845U (en) | Deep hole spiral chip removal drill | |
| CN102434108A (en) | Comprehensive detritus combined bit with large caliber | |
| CN105817656A (en) | Composite hole machining cutter capable of being spliced and combined | |
| CN207609419U (en) | coal mining machine roller tooth assembly | |
| CN206783703U (en) | A kind of disassembling furnace machine spindle-less reaming bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170822 Address after: 301714, No. two, 6 weft Road, Hexi Town, Wuqing District, Tianjin Patentee after: Tianjin Bo Zhong Zhong Drilling Tool Co., Ltd. Address before: 301714, No. two, six weft Road, Hexi Town, Wuqing District, Tianjin Patentee before: Tong Gongxi |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20180305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |