CN110158691A - A kind of mill teeth and Double-wheel milling milling attachment - Google Patents
A kind of mill teeth and Double-wheel milling milling attachment Download PDFInfo
- Publication number
- CN110158691A CN110158691A CN201910409894.2A CN201910409894A CN110158691A CN 110158691 A CN110158691 A CN 110158691A CN 201910409894 A CN201910409894 A CN 201910409894A CN 110158691 A CN110158691 A CN 110158691A
- Authority
- CN
- China
- Prior art keywords
- mill teeth
- teeth
- matrix
- milling
- mill
- 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.)
- Granted
Links
- 238000003801 milling Methods 0.000 title claims abstract description 57
- 239000011159 matrix material Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010276 construction Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 241001347978 Major minor Species 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011549 displacement method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000037805 labour Diseases 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
- E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/22—Component parts
- E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
- E02F3/241—Digging wheels; Digging elements of wheels; Drives for wheels digging wheels
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
Abstract
The invention discloses a kind of mill teeth and Double-wheel milling milling attachments, belong to technical field of engineering machinery, including mill teeth matrix, and top one end of the mill teeth matrix is equipped with blade type tooth, and the other end is equipped with tapered teeth；The upper surface of the blade type tooth and the tooth tip of the tapered teeth are generally aligned in the same plane, and are higher by the mill teeth baseline top；The thickness of the blade type tooth is greater than the thickness of the mill teeth matrix, and two sides exceed the mill teeth matrix；The root diameter (RD) of the tapered teeth is greater than the thickness of the mill teeth matrix.Mill teeth and Double-wheel milling milling attachment provided by the invention, ground adaptability is strong, wear-resistant, long service life.
Description
Technical field
The invention belongs to technical field of engineering machinery, and in particular to a kind of mill teeth and Double-wheel milling milling attachment.
Background technique
As urban infrastructure construction is deeper and deeper, construction of diaphragm wall is an indispensable process, at present
Construction mainly has that the displacement method of concrete is filled in grooving and in situ stir injection cement slurry is modified to wall method.It uses most
Advanced equipment is that hydraulic two-wheel flute milling machine and hydraulic Double-wheel milling stir drilling machine deeply.Milling wheel is the core work device of Double-wheel milling,
It arranges that different types of mill teeth constitutes different types of milling wheel thereon, is respectively suitable for different types of stratum.Double-wheel milling at present
Most-often used mill teeth of constructing mainly includes two classes, the full-height tooth of blade type alloy head and the pick of taper alloy head, usual mill teeth
Single alloy head is only set.
The formation volumes that full-height tooth and pick have its applicable, but as construction of diaphragm wall depth is increasing, ground
Layer is often changeable, and full-height tooth is high in soft rock strata milling efficiency, but encounters lithosphere and there is the motionless phenomenon of milling, pick broken rock energy
Power is strong, but is substantially less than full-height tooth in soft rock strata milling efficiency.Formation variation is encountered in construction, generally requires replacement milling wheel,
Cause construction delay, expend a large amount of labours, construct for big depth groove milling, frequently proposes that carriage arbor keeps construction speed slow,
Mud layering, cell wall shakiness can also be caused and collapsed, very big security risk is brought.
The cutting tooth (application No. is 200610142469.4) of existing patent of invention earth working tool, proposes a kind of group
Mould assembly mill teeth, primary cutting element is arranged at tooth root top, and to widen operation cross section, two assisted machinings are arranged behind main cutting tooth
Tooth, major-minor cutting element have different cutting outer rims, the laterally projecting width more than primary cutting element of secondary cutting elements, but
It is that the cutting tooth of the mill teeth is easily worn in milling process, service life is short.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, a kind of mill teeth and Double-wheel milling milling attachment, ground are provided
Adaptable, wear-resistant, the long service life of layer.
The present invention provides the following technical scheme that
A kind of mill teeth, including mill teeth matrix, top one end of the mill teeth matrix are equipped with blade type tooth, and the other end is equipped with tapered teeth；
The upper surface of the blade type tooth and the tooth tip of the tapered teeth are generally aligned in the same plane, and are higher by the mill teeth baseline top；It is described
The thickness of blade type tooth is greater than the thickness of the mill teeth matrix, and two sides exceed the mill teeth matrix；The root of the tapered teeth is straight
Diameter is greater than the thickness of the mill teeth matrix.
Preferably, the angle between the cutting edge lateral surface of the blade type tooth and the mill teeth matrix vertical axis is 0-10 °.
Preferably, the angle between the axis of the tapered teeth and the mill teeth matrix horizontal axis is 110-120 °.
Preferably, the upper surface of the blade type tooth is higher than the mill teeth baseline top 5-8mm.
Preferably, the two sides of the blade type tooth respectively exceed the mill teeth matrix 3-5mm.
Preferably, the root diameter (RD) of the tapered teeth is greater than the thickness 5-10mm of the mill teeth matrix.
Preferably, the side Yu bottom surface of the mill teeth matrix are equipped with mill teeth mounting groove.
Preferably, the cross-sectional shape of the mill teeth mounting groove is trapezoidal.
Preferably, the mill teeth matrix is equipped with dismounting process hole and mill teeth fixation hole, and the mill teeth fixation hole is set to institute
State the side of blade type tooth.
A kind of Double-wheel milling milling attachment, including above-mentioned mill teeth.
Compared with prior art, advantageous effects of the invention:
(1) mill teeth in the present invention, sets blade type tooth and tapered teeth at the top both ends of mill teeth matrix respectively, is encountering formation variation
When, change milling wheel direction of rotation or replacement mill teeth installation direction, without dismantling and replacing milling wheel, ground adaptability is strong,
Drilling machine is stirred deeply suitable for slotter and Double-wheel milling.
(2) upper surface of blade type tooth and the tooth tip of tapered teeth are generally aligned in the same plane, and guarantee other end when one end carries out milling
It is not worn；The upper surface of blade type tooth is higher by mill teeth baseline top, and the thickness of blade type tooth is greater than the thickness of mill teeth matrix, and two sides
Beyond mill teeth matrix, the root diameter (RD) of tapered teeth is greater than the thickness of mill teeth matrix, is advantageously implemented the protection to mill teeth matrix, from
And extend the service life of mill teeth.
Detailed description of the invention
Fig. 1 is the main view of mill teeth provided in an embodiment of the present invention；
Fig. 2 is the top view of mill teeth provided in an embodiment of the present invention；
Fig. 3 is the side view of mill teeth provided in an embodiment of the present invention；
Fig. 4 is the bottom view of mill teeth provided in an embodiment of the present invention.
In the figure, it is marked as 1, mill teeth matrix；2, blade type tooth；3, tapered teeth；4, mill teeth fixation hole；5, dismounting process hole；6,
Mill teeth mounting groove.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
It should be noted that in the description of the present invention, term "front", "rear", "left", "right", "upper", "lower", "inner",
The orientation or positional relationship of the instructions such as "outside" is to be merely for convenience of description originally based on orientation or positional relationship shown in the drawings
It invents rather than requires the present invention that must be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Term "front", "rear" used in present invention description, "left", "right", "upper", "lower" refer to the direction in attached drawing, term
"inner", "outside" refer respectively to the direction towards or away from geometric center of specific component.
As shown in Figure 1, a kind of mill teeth, including mill teeth matrix 1, top one end of the mill teeth matrix 1 are equipped with blade type tooth 2,
The other end is equipped with tapered teeth 3, and ground adaptability is strong, can preferably play Milling Function on soft or hard stratum.
As shown in Figure 1, the angle α between the cutting edge lateral surface of blade type tooth 2 and 1 vertical axis of mill teeth matrix is 0-
10 °, to guarantee that the cutting angle of blade type tooth 2 is 80-90 °.Between the axis of tapered teeth 3 and 1 horizontal axis of mill teeth matrix
Angle β is 110-120 °, to guarantee that the cutting angle of tapered teeth 3 is 60-70 °.In above-mentioned cutting angular region, the milling of mill teeth institute
The ground clast fallen has biggish flowing velocity, to there is higher crushing efficiency, milling effect is good, and milling specific energy consumption value
It is lower, it can protect mill teeth, reduce abrasion, extend the service life of mill teeth.
As shown in Figs. 1-2, the upper surface of the blade type tooth 2 and the tooth tip of the tapered teeth 3 are generally aligned in the same plane, and guarantee one
The other end is not worn when end carries out milling.The upper surface of blade type tooth 2 is higher by the 1 top 5-8mm of mill teeth matrix.The blade type
The thickness of tooth 2 is greater than the thickness of the mill teeth matrix 1, specifically, the two sides of blade type tooth 2 respectively exceed the mill teeth matrix 13-
5mm.The root diameter (RD) of the tapered teeth 3 is greater than the thickness 5-10mm of the mill teeth matrix 1.Milling in above-mentioned value range
Tooth can form good protection to mill teeth matrix 1, be conducive to extend the service life of mill teeth.
As shown in Fig. 1,3 and 4, the side and bottom surface of mill teeth matrix 1 are equipped with mill teeth mounting groove 6, the mill teeth mounting groove 6
Cross-sectional shape be it is trapezoidal.Mill teeth matrix 1 is equipped with dismounting process hole 5 and mill teeth fixation hole 4, and the mill teeth fixation hole 4 is set
In the side of the blade type tooth 2, it is coupled convenient for mill teeth and toothholder plate.
The present invention also provides a kind of Double-wheel milling milling attachments, including above-mentioned mill teeth.When Double-wheel milling milling attachment is slotter
When, when encountering formation variation, change milling wheel direction of rotation or only need to change mill teeth installation direction, without disassembly and more
Change milling wheel；When Double-wheel milling milling attachment stirs drilling machine deeply for the Double-wheel milling that milling wheel is capable of bidirectional rotation, in deep cement soil milling
It stirs in work progress, proposes carriage arbor if encountering formation variation, the soil cement of milling stirring is it is possible that solidification
Hardening, using the dual-purpose type milling tooth, changes milling wheel rotation if cannot continue construction for a long time will bring very big security risk
Turn direction, drilling machine construction effect and ground adaptability will be greatly promoted.Further, since mill teeth wearability is good, service life
Long, Double-wheel milling milling attachment also has respective performances.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of mill teeth, which is characterized in that including mill teeth matrix, top one end of the mill teeth matrix is equipped with blade type tooth, another
End is equipped with tapered teeth；The upper surface of the blade type tooth and the tooth tip of the tapered teeth are generally aligned in the same plane, and are higher by the mill teeth
Baseline top；The thickness of the blade type tooth is greater than the thickness of the mill teeth matrix, and two sides exceed the mill teeth matrix；The cone
The root diameter (RD) of type tooth is greater than the thickness of the mill teeth matrix.
2. a kind of mill teeth according to claim 1, which is characterized in that the cutting edge lateral surface of the blade type tooth and the milling
Angle between tooth matrix vertical axis is 0-10 °.
3. a kind of mill teeth according to claim 1, which is characterized in that the axis of the tapered teeth and the mill teeth matrix water
Angle between flat axis is 110-120 °.
4. a kind of mill teeth according to any one of claim 1-3, which is characterized in that the upper surface of the blade type tooth is higher than
The mill teeth baseline top 5-8mm.
5. a kind of mill teeth according to any one of claim 1-3, which is characterized in that the two sides of the blade type tooth respectively exceed
The mill teeth matrix 3-5mm.
6. a kind of mill teeth according to any one of claim 1-3, which is characterized in that the root diameter (RD) of the tapered teeth is big
In the thickness 5-10mm of the mill teeth matrix.
7. a kind of mill teeth according to claim 1, which is characterized in that the side and bottom surface of the mill teeth matrix are equipped with milling
Tooth mounting groove.
8. a kind of mill teeth according to claim 7, which is characterized in that the cross-sectional shape of the mill teeth mounting groove is ladder
Shape.
9. a kind of mill teeth according to claim 1, which is characterized in that the mill teeth matrix is equipped with dismounting process hole and milling
Tooth fixation hole, the mill teeth fixation hole are set to the side of the blade type tooth.
10. a kind of Double-wheel milling milling attachment, which is characterized in that including mill teeth described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409894.2A CN110158691B (en) | 2019-05-16 | 2019-05-16 | Gear milling and double-wheel milling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409894.2A CN110158691B (en) | 2019-05-16 | 2019-05-16 | Gear milling and double-wheel milling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110158691A true CN110158691A (en) | 2019-08-23 |
| CN110158691B CN110158691B (en) | 2024-03-01 |
Family
ID=67631095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910409894.2A Active CN110158691B (en) | 2019-05-16 | 2019-05-16 | Gear milling and double-wheel milling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110158691B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001011887A (en) * | 1999-07-02 | 2001-01-16 | Ohbayashi Corp | Horizontal multi-spindle rotary excavator |
| US20040216336A1 (en) * | 2003-04-30 | 2004-11-04 | Esco Corporation | Releasable coupling assembly |
| US20070056425A1 (en) * | 2005-09-15 | 2007-03-15 | Bonar Frank K | Link and chain for rock cutting |
| CN1955383A (en) * | 2005-10-25 | 2007-05-02 | 包尔机械有限公司 | Cutting tooth for earth working equipment |
| WO2007056857A1 (en) * | 2005-11-16 | 2007-05-24 | Les Équipments Prenbec Inc. | Reversible saw tooth |
| CN201541434U (en) * | 2009-06-26 | 2010-08-11 | 韦寿喜 | Double-circular plate ditching machine with two-stage transmission |
| DE202010007996U1 (en) * | 2010-07-06 | 2010-09-02 | H. Geiger Gmbh Stein- Und Schotterwerke | Cutting wheel for processing of hard rock |
| WO2012007533A1 (en) * | 2010-07-14 | 2012-01-19 | Damen Dredging Equipment Bv | Cutter head |
| US20120076595A1 (en) * | 2010-09-24 | 2012-03-29 | Sandvik Intellectual Propety AB | Gear milling cutter as well as a replaceable milling insert therefor |
| JP2013166242A (en) * | 2012-02-16 | 2013-08-29 | Sandvik Intellectual Property Ab | Face hobbing process cutter system, and indexable milling insert for use in the same |
| CN105864388A (en) * | 2016-06-06 | 2016-08-17 | 四川省机械研究设计院 | Milling wheel drive system of double-wheel slot milling machine for underground continuous wall construction |
| CN106638743A (en) * | 2016-12-07 | 2017-05-10 | 天津市津勘岩土工程股份有限公司 | Double-wheel groove milling device and double-wheel groove milling machine |
| CN108086381A (en) * | 2018-01-25 | 2018-05-29 | 中铁工程机械研究设计院有限公司 | Two-wheel flute milling machine and grooving mode based on sprocket transmission and milling |
| CN208701789U (en) * | 2018-07-30 | 2019-04-05 | 广州鑫桥建筑工程有限公司 | Milling wheel suitable for compound stratum removes mud cake device and two-wheel flute milling machine |
| CN109736379A (en) * | 2019-01-21 | 2019-05-10 | 江苏徐工工程机械研究院有限公司 | A kind of milling wheel and two-wheel flute milling machine excavated for diaphram wall |
| CN210163963U (en) * | 2019-05-16 | 2020-03-20 | 江苏徐工工程机械研究院有限公司 | Milling tooth and double-wheel milling device |
-
2019
- 2019-05-16 CN CN201910409894.2A patent/CN110158691B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001011887A (en) * | 1999-07-02 | 2001-01-16 | Ohbayashi Corp | Horizontal multi-spindle rotary excavator |
| US20040216336A1 (en) * | 2003-04-30 | 2004-11-04 | Esco Corporation | Releasable coupling assembly |
| US20070056425A1 (en) * | 2005-09-15 | 2007-03-15 | Bonar Frank K | Link and chain for rock cutting |
| CN1955383A (en) * | 2005-10-25 | 2007-05-02 | 包尔机械有限公司 | Cutting tooth for earth working equipment |
| WO2007056857A1 (en) * | 2005-11-16 | 2007-05-24 | Les Équipments Prenbec Inc. | Reversible saw tooth |
| CN201541434U (en) * | 2009-06-26 | 2010-08-11 | 韦寿喜 | Double-circular plate ditching machine with two-stage transmission |
| DE202010007996U1 (en) * | 2010-07-06 | 2010-09-02 | H. Geiger Gmbh Stein- Und Schotterwerke | Cutting wheel for processing of hard rock |
| WO2012007533A1 (en) * | 2010-07-14 | 2012-01-19 | Damen Dredging Equipment Bv | Cutter head |
| US20120076595A1 (en) * | 2010-09-24 | 2012-03-29 | Sandvik Intellectual Propety AB | Gear milling cutter as well as a replaceable milling insert therefor |
| JP2013166242A (en) * | 2012-02-16 | 2013-08-29 | Sandvik Intellectual Property Ab | Face hobbing process cutter system, and indexable milling insert for use in the same |
| CN105864388A (en) * | 2016-06-06 | 2016-08-17 | 四川省机械研究设计院 | Milling wheel drive system of double-wheel slot milling machine for underground continuous wall construction |
| CN106638743A (en) * | 2016-12-07 | 2017-05-10 | 天津市津勘岩土工程股份有限公司 | Double-wheel groove milling device and double-wheel groove milling machine |
| CN108086381A (en) * | 2018-01-25 | 2018-05-29 | 中铁工程机械研究设计院有限公司 | Two-wheel flute milling machine and grooving mode based on sprocket transmission and milling |
| CN208701789U (en) * | 2018-07-30 | 2019-04-05 | 广州鑫桥建筑工程有限公司 | Milling wheel suitable for compound stratum removes mud cake device and two-wheel flute milling machine |
| CN109736379A (en) * | 2019-01-21 | 2019-05-10 | 江苏徐工工程机械研究院有限公司 | A kind of milling wheel and two-wheel flute milling machine excavated for diaphram wall |
| CN210163963U (en) * | 2019-05-16 | 2020-03-20 | 江苏徐工工程机械研究院有限公司 | Milling tooth and double-wheel milling device |
Non-Patent Citations (3)
| Title |
|---|
| 赵伟民;汪云龙;高阳;祖海英;: "低空间型地下连续墙双轮铣削装置", 建筑机械, no. 07 * |
| 陈志敏;: "双轮铣槽机锥形铣齿在复杂硬岩地层施工中的改进", 建筑机械化, no. 02 * |
| 颜巍;: "双轮铣槽机施工技术与经济性分析", 建筑机械化, no. 06 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110158691B (en) | 2024-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201704714U (en) | Rock excavating reamer | |
| CN105350976A (en) | Cutter head of tunneling machine suitable for complex hard rock geology | |
| CN201794592U (en) | Cutter of shield machine | |
| CN101812971B (en) | Combined bit | |
| CN205206834U (en) | Tunnel boring machine blade disc that is fit for complicated hard rock geology | |
| CN110158690A (en) | A kind of milling wheel and two-wheel flute milling machine with combination tooth tooth plate | |
| CN110158691A (en) | A kind of mill teeth and Double-wheel milling milling attachment | |
| CN210163963U (en) | Milling tooth and double-wheel milling device | |
| CN201730550U (en) | Composite drill | |
| CN111622289A (en) | Hydraulic mechanical combined rock breaking milling wheel, double-wheel slot milling machine and grooving construction method thereof | |
| CN216894263U (en) | Six-blade drill crown for petroleum drilling | |
| CN106761473B (en) | A kind of drilling rod | |
| CN105887834A (en) | Buckling device for equal-thickness trapezoid-head piles and piles shaped like Greek letter 'pi' | |
| CN202788863U (en) | Heavy type tearing cutter used for shield machine | |
| CN103195370A (en) | Combined type drill bit | |
| CN103939024A (en) | Drill bit suitable for hard sandy soil | |
| CN212670684U (en) | Hydraulic mechanical combined rock breaking milling wheel and double-wheel slot milling machine | |
| CN208845109U (en) | The combination of churning driven machine bit | |
| CN208518606U (en) | A kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure | |
| CN203701983U (en) | Steel body spiral four blade PDC (Polycrystalline Diamond Compact) bit | |
| CN201934012U (en) | Hole sweep drilling tool of rotary drilling rig | |
| CN217206318U (en) | High-strength drill tooth for rotary digging cutter tooth alloy coring bit | |
| CN207176789U (en) | Head is dug in blade type milling | |
| CN103939021B (en) | A kind of sand soil drill bit | |
| CN212803237U (en) | Shield cutter structure suitable for upper soft and lower hard stratum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |