CN107989626B - Shield cutter - Google Patents
Shield cutter Download PDFInfo
- Publication number
- CN107989626B CN107989626B CN201710946051.7A CN201710946051A CN107989626B CN 107989626 B CN107989626 B CN 107989626B CN 201710946051 A CN201710946051 A CN 201710946051A CN 107989626 B CN107989626 B CN 107989626B
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- China
- Prior art keywords
- gap
- blade
- knife
- cutter
- mounting surface
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 abstract description 27
- 239000002689 soil Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001376 precipitating effect Effects 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 abstract description 4
- 238000007596 consolidation process Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 238000000034 method Methods 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
- 241000124033 Salix Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention relates to a kind of shield cutters, are installed on the central area of shield cutter, and the shield cutter includes: knife bucket, and surface is formed with mounting surface；It is fixedly arranged on the middle knife of the mounting surface, the middle cutter has opposite the first side and second side；It is fixedly arranged on the mounting surface and is located at the first blade of middle first side of knife, stay to set between first blade and the middle knife and be formed with the first gap；And be fixedly arranged on the mounting surface and be located at second blade of described middle knife second side, it stays to set between second blade and the middle knife and is formed with the second gap, the setting direction in the setting direction in second gap and first gap is in setting angle setting.Shield cutter of the invention not only has the function of cutting and stirring soil, also has the function of transporting middle part soil outward, to achieve the effect that prevent mud particles from precipitating at cutter head center, tie mud.
Description
Technical field
The present invention relates to shield-tunneling construction fields, refer in particular to a kind of shield cutter.
Background technique
As China big city population is increasing and the load of traffic above-ground facility increasingly aggravates, the exploitation of the underground space
Using just at vast city planning design personnel focus of attention, shield method is also extensive in city track traffic engineering
Using.In the regional shield-tunneling construction such as the Yangtze river basin, Pearl River Delta, argillaceous sandstone stratum is common to pass through one of geology.?
In such stratum Shield Construction Method Used, due to shield cutter diameter is big, aperture opening ratio is small, central area linear velocity is low etc., knife
Tiny sand grains that disk is cut, clast are semi-consolidated made of reassembling in cutterhead cabin or consolidation blocks can often cover
Lid package central area cutter, leads to cutter mud lining, increases the load of cutterhead and cutter, accelerate the abrasion of cutter, cause shield
Structure driving speed is substantially reduced.The cutting moment of torque increases, while temperature in native storehouse being caused to increase, and influences the service life of main shaft seals,
It will cause main shaft seals aging damage when serious.
Currently, major diameter, small opening slurry shield cutter head center region cutter be frequently with hobboing cutter, as shown in Figure 1 to Figure 3,
The hobboing cutter 11 includes knife bucket 111 and two semi-circular blades 112, is vertically arranged two semicircles on the surface 1111 of knife bucket 111
Blade 112 is installed with setting spacing between two semi-circular blades 112, and the two is arranged in parallel.Hobboing cutter 11 relies primarily on vertically
Power and rolling force broken rock.If mud is tied in cutter head center region, existing solution is to increase fixed rinse mouth in cutterhead front, to
Central area cutter washes away.The measure can solve the above problems to a certain extent under normal conditions, but still existing defects, that is, work as
When rinse mouth itself blocks, it can not continue to function.Therefore, which can not properly settle the corresponding of slurry shield construction
Problem.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of shield cutter is provided, solves existing shield cutter
The problem of upper hobboing cutter is easy to produce central area mud cake consolidation and influences slurry shield construction.
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of shield cutters, are installed on the central area of shield cutter, and the shield cutter includes:
Knife bucket, surface are formed with mounting surface；
It is fixedly arranged on the middle knife of the mounting surface, the middle cutter has opposite the first side and second side；
It is fixedly arranged on the mounting surface and is located at the first blade of middle first side of knife, first blade and the middle knife
Between stay to set and be formed with the first gap；And
It is fixedly arranged on the mounting surface and is located at second blade of described middle knife second side, second blade and the middle knife
Between stay to set and be formed with the second gap, the setting direction in the setting direction in second gap and first gap is in setting folder
Angle setting.
Shield cutter of the invention not only has the function of cutting and stirring soil, also has and transports middle part soil outward
Function, to achieve the effect that prevent mud particles from precipitating at cutter head center, tie mud.Lead on shield cutter of the invention
The first blade, middle knife and the second blade for crossing setting form the first gap and the second gap being arranged in setting angle, lead to
It crosses the first gap formed and the second gap and conveys the mud particles cut down from the central area of cutterhead to outside, thus
The effect for preventing precipitating and knot mud of the mud particles at cutter head center, solves existing hobboing cutter and is also easy to produce central area mud
The problem of cake consolidates.
Shield cutter of the present invention further improvement lies in that, first blade be arc shape, have the first arc convex
With the first arc-shaped concave, first arc convex is arranged towards the middle knife；
Second blade is also arc shape, has the second arc convex and the second arc-shaped concave, and second arc is convex
Face is arranged towards the middle knife.
Shield cutter of the present invention further improvement lies in that, side towards first blade on the middle knife is first
Inclined surface, the side towards second blade is the second inclined surface on the middle knife.
Shield cutter of the present invention further improvement lies in that, the angle of first inclined surface and the mounting surface is 45 °,
The angle of second inclined surface and the mounting surface is 45 °.
Shield cutter of the present invention further improvement lies in that, part corresponding with the middle knife on first arc convex
Angle with the mounting surface is 45 °；
Part corresponding with the middle knife and the angle of the mounting surface are 45 ° on second arc convex.
Shield cutter of the present invention further improvement lies in that, the middle knife be trigone wimble structure.
Shield cutter of the present invention further improvement lies in that, further include the first rinse mouth and for being opened in the mounting surface
Two rinse mouths,
First rinse mouth is located at first gap location, and the stream of the flushing water flow sprayed from first rinse mouth
Dynamic direction is identical as the setting direction in first gap；
Second rinse mouth is located at second gap location, and the stream of the flushing water flow sprayed from second rinse mouth
Dynamic direction is identical as the setting direction in second gap.
Shield cutter of the present invention further improvement lies in that, first gap and second gap are symmetrically set to institute
State the two sides of middle knife.
Shield cutter of the present invention further improvement lies in that, first blade and second blade are high by two in middle part
Hold low grading structure.
Detailed description of the invention
Fig. 1 is the perspective view of hobboing cutter in the prior art.
Fig. 2 is the side view in a direction of hobboing cutter in the prior art.
Fig. 3 is the side view of the other direction of hobboing cutter in the prior art.
Fig. 4 is the perspective view of shield cutter of the present invention.
Fig. 5 is the front view of shield cutter of the present invention.
Fig. 6 is the top view of shield cutter of the present invention.
Fig. 7 is the structural schematic diagram that shield cutter of the present invention is installed on shield cutter.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refering to Fig. 4, the present invention provides a kind of shield cutters, are arranged in cutterhead for solving hobboing cutter in the prior art
Heart district domain be easy central area lead to the problem of mud cake consolidation phenomenon and influence slurry shield construction.Shield cutter of the invention
It is provided with middle knife, the first blade and the second blade, and the first blade and the second blade are located at the two sides of middle knife, the first blade is in
It is formed with the first gap between knife, the second gap is formed between the second blade and middle knife, first gap and the second gap are made
For the transfer passage of mud particles, and the setting direction in the first gap and the second gap is in setting angle setting, so that in blade
The mud particles being cut at heart district domain can be flowed out from the first gap and the second gap location to outside, in conjunction with the rotation of cutterhead
Turn, first gap and the second gap, to accelerate the outside conveying of the mud particles of central area, are kept away also with rotation
Exempt from the phenomenon that central area generates mud cake consolidation.Cooperate the first rinse mouth and the second rinse mouth being arranged on knife bucket again, leads to
Water flow that the first rinse mouth and the second rinse mouth spray is crossed by the mud particles of central area along the first gap and the second gap
External export to cutterhead, and then entered in native storehouse from the opening on cutterhead, to further avoid consolidation phenomenon
Generation.The structure of shield cutter of the present invention is illustrated with reference to the accompanying drawing.
As shown in figure 4, the present invention provides a kind of shield cutters 30, as shown in connection with fig. 7, which is installed on shield
The central area of structure cutterhead 21, the shield cutter 30 include knife bucket 31, middle knife 32, the first blade 33 and the second blade 34, knife bucket
31 surface is formed with mounting surface 311, which is the upper surface of knife bucket 31；Middle knife 32 is installed in the installation of knife bucket 31
On face 311, middle knife 32 has the first opposite side 321 and second side 322；First blade 33 is fixedly arranged on mounting surface 311 and is located at
At first side 321 of middle knife 32, stays to set between the first blade 33 and middle knife 32 and be formed with the first gap 35,33 He of the first blade
It is installed with certain spacing between middle knife 32, stays the spacing set by this to form between the first blade 33 and middle knife 32
First gap 35, the transfer passage of the first gap 35 as the mud particles cut down by shield cutter 21；Second blade
34 are fixedly arranged on the mounting surface 311 of knife bucket 31 and are located at second side of middle knife 32, stay and set between second blade 34 and middle knife 32
Be formed with the second gap 36, be installed with certain spacing between second blade 34 and middle knife 32, stayed by this spacing that sets from
And the second gap 36 is formd between the second blade 34 and middle knife 32, under second gap 36 by shield cutter 21 as being cut
The transfer passage for the mud particles come；The setting direction in the second gap 36 and the setting direction in the first gap 35 are set in setting angle
It sets, i.e. the first gap 35 and the second gap 36 are obliquely arranged on mounting surface 311, to facilitate the outside of mud particles
Conveying.
As shown in fig. 7, the surrounding of shield cutter 21 is provided with hobboing cutter 22 radially, the surface of the hobboing cutter 22 is vertically set
It is equipped with a pair of of semi-circular blade, is formed with certain gap between a pair of semi-circular blade, since a pair of of semi-circular blade is in flat
Row setting, when the hobboing cutter 22 is rotated with shield cutter 21, retention has part mud between two semi-circular blades
Soil particle is difficult to be discharged.The central area of shield cutter 21 is set according to hobboing cutter 22, is just easy to shape in the central area
It is consolidated at mud cake.And the first gap 35 and the second gap 36 being obliquely installed are formd on shield cutter 30 of the invention, this
One gap 35 and the second gap 36 are in setting angle setting, and when shield cutter 30 is rotated with shield cutter 21, this is between first
The mud particles cut down successfully can be transported to the outer of shield cutter 21 from central area by gap 35 and the second gap 26
Side avoids mud particles in the generation of central area consolidation phenomenon.Shield cutter of the invention not only has cutting and stirring
The function of soil also has the function of transporting middle part soil outward, so that having reached prevents mud particles at cutter head center
The effect of precipitating, knot mud.
As a better embodiment of the invention, as shown in Figure 5 and Figure 6, the first blade 33 is arc shape, is had opposite
The first arc convex and the first arc-shaped concave, the first arc convex of first blade 33 is arranged towards middle knife 32, due to
One blade 33 is arc shape, so that the first gap 35 is also arc-shaped gaps；Second blade 34 is also arc shape, second knife
Piece 34 has opposite the second arc convex and the second arc-shaped concave, and the second arc convex is arranged towards middle knife 32, due to second
Blade 34 is arc shape, so that the second gap 36 is also arc-shaped gaps.First blade 33 and the second blade 34 are set as arc
On the one hand shape can be improved cutting power and agitating function to the soil body, on the other hand also make the first gap 35 to be formed
It is arc-shaped gaps with the second gap 36, cooperates the rotation of shield cutter 21, the arc-shaped gaps of the formation can more quickly and just
Benefit transfers out the mud particles cut down.If shield cutter 21 is in the first gap 35 and second when rotating counterclockwise
Also in rotating counterclockwise, the first gap 35 is in the circular edge of rotation and then by mud particles in rotary course in gap 36
It throws away outward, to accelerate the conveying of soil body particle.If shield cutter 21 is in the first gap 35 and second when rotating clockwise
Also in rotating clockwise, the second gap 36 is in the circular edge of rotation and then by mud particles in rotary course in gap 36
It throws away outward, to accelerate the conveying of soil body particle.
Further, as shown in fig. 6, the side towards the first blade 33 on middle knife 32 is the first inclined surface 323, middle knife 32
On the side towards the second blade 34 be the second inclined surface 324, between the first inclined surface 323 and the first blade 33 formed first between
Gap 35 forms the second gap 36 between second inclined surface 324 and the second blade 34.Preferably, knife 32 is trigone wimble structure in this,
There are four gores for tool, so that and middle knife 32 has the function of stronger cutting and stirring soil in rotary course, and
The gore being obliquely installed can be improved the guiding role to mud particles, to improve the conveying capacity of mud particles.
Further, the first inclined surface 323 and the angle of mounting surface 211 are 45 °, the second inclined surface 324 and mounting surface
211 angle is 45 °.First arc convex of the first blade 33 part corresponding with middle knife 32 and the angle of mounting surface 211 are
45 °, part corresponding with middle knife 32 and the angle of mounting surface 211 are 45 ° on the second arc convex.So that the first gap 35
Angle between the plane where mounting surface 211 is 45 °, the folder between plane where the second gap 36 and mounting surface 211
Angle is 45 °.When being in certain tilt angle between the plane where the first gap 35 and the second gap 36 and mounting surface 211, energy
Convenient for the conveying of mud particles, preferably when tilt angle is 45 °, the conveying effect of the mud particles is more preferably.
As another better embodiment of the invention, as shown in Figure 4 and Figure 6, shield cutter 30 of the invention further includes
It is provided with the first rinse mouth 37 and the second rinse mouth 38 of mounting surface 311, which is located at the first gap 35, and
The flow direction of the flushing water flow sprayed from first rinse mouth 37 is identical as the setting direction in the first gap 35；Second rinse mouth
38 are located at the second gap 36, and the setting of the flow direction and the second gap 36 of the flushing water flow sprayed from the second rinse mouth 38
Direction is identical.Accelerate soil at the first gap 35 and the second gap 36 by the first rinse mouth 37 of setting and the second rinse mouth 38
The conveying of grain can be further improved the efficiency that mud particles convey outward, and the water flow and first that first rinse mouth 37 sprays
The setting direction in gap 35 is identical, arrow direction as shown in Figure 6, the water flow and the second gap 36 that the second rinse mouth 38 sprays
Setting direction it is identical, arrow direction as shown in Figure 6.Preferably, the first rinse mouth 37 and the second rinse mouth 38 are arranged
It is 45 ° obliquely, is transported from inside to outside with being more conducive to mud particles.
Further, the first gap 35 and the second gap 36 are symmetrically set to the two sides of middle knife 32, the first blade 33 and the
Two blades 34 are also in the two sides for being symmetrically set to middle knife 32.First blade 33 and the second blade 34 are low gradually in the high both ends in middle part
Structure changes.The shape of first blade 33 and the second blade 34 is in willow leaf shape.
As shown in fig. 7, shield cutter 30 of the invention is in the central area of shield cutter 31, the shield cutter 31
Six shield cutters 30 are arranged in heart district domain, and six shield cutters 30 are in irregular distribution.Shield cutter of the invention has
The function that middle part muddy water is transported outward, to achieve the effect that prevent mud particles from precipitating at cutter head center, tie mud.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (9)
1. a kind of shield cutter is installed on the central area of shield cutter, which is characterized in that the shield cutter includes:
Knife bucket, surface are formed with mounting surface；
It is fixedly arranged on the middle knife of the mounting surface, the middle cutter has opposite the first side and second side；
It is fixedly arranged on the mounting surface and is located at the first blade of middle first side of knife, between first blade and the middle knife
It stays to set and is formed with the first gap；And
It is fixedly arranged on the mounting surface and is located at second blade of described middle knife second side, between second blade and the middle knife
It stays to set and is formed with the second gap, the setting direction in second gap and the setting direction in first gap are set in setting angle
It sets.
2. shield cutter as described in claim 1, which is characterized in that first blade is arc shape, has the first arc
Convex surface and the first arc-shaped concave, first arc convex are arranged towards the middle knife；
Second blade is also arc shape, has the second arc convex and the second arc-shaped concave, second arc convex face
It is arranged to the middle knife.
3. shield cutter as claimed in claim 1 or 2, which is characterized in that the side towards first blade on the middle knife
Face is the first inclined surface, and the side towards second blade is the second inclined surface on the middle knife.
4. shield cutter as claimed in claim 3, which is characterized in that first inclined surface and the angle of the mounting surface are
45 °, second inclined surface and the angle of the mounting surface are 45 °.
5. shield cutter as claimed in claim 2, which is characterized in that corresponding with the middle knife on first arc convex
Part and the angle of the mounting surface are 45 °；
Part corresponding with the middle knife and the angle of the mounting surface are 45 ° on second arc convex.
6. shield cutter as described in claim 1, which is characterized in that the middle knife is trigone wimble structure.
7. shield cutter as described in claim 1, which is characterized in that further include the first rinse mouth for being opened in the mounting surface
With the second rinse mouth,
First rinse mouth is located at first gap location, and the flowing side of the flushing water flow sprayed from first rinse mouth
To identical as the setting direction in first gap；
Second rinse mouth is located at second gap location, and the flowing side of the flushing water flow sprayed from second rinse mouth
To identical as the setting direction in second gap.
8. shield cutter as described in claim 1, which is characterized in that first gap and second gap are symmetrically set
In the two sides of the middle knife.
9. shield cutter as described in claim 1, which is characterized in that first blade and second blade is in middle parts
The low grading structure in high both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946051.7A CN107989626B (en) | 2017-10-12 | 2017-10-12 | Shield cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946051.7A CN107989626B (en) | 2017-10-12 | 2017-10-12 | Shield cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107989626A CN107989626A (en) | 2018-05-04 |
| CN107989626B true CN107989626B (en) | 2019-01-04 |
Family
ID=62028861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710946051.7A Active CN107989626B (en) | 2017-10-12 | 2017-10-12 | Shield cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107989626B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209406B (en) * | 2018-10-18 | 2021-02-09 | 上海隧道工程有限公司 | Shield cutter configuration structure and method for improving flowing space of muck |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH074180A (en) * | 1992-11-27 | 1995-01-10 | Keihin Kiyuukou Dentetsu Kk | Shield machine having cutting device for drain material or the like |
| US5460432A (en) * | 1993-03-29 | 1995-10-24 | Kabushiki Kaisha Komotsu Seisakusho | Cutter head for a tunnel excavator |
| JP2009203775A (en) * | 2008-02-29 | 2009-09-10 | Sanwa Kizai Co Ltd | Cutter head for crushing existing buried pipe |
| CN102359134A (en) * | 2011-08-08 | 2012-02-22 | 中交天津港航勘察设计研究院有限公司 | Reamer with hydraulic characteristic for dredger |
| CN106555594A (en) * | 2016-12-05 | 2017-04-05 | 中铁工程装备集团有限公司 | A kind of normal pressure tool changing cutterhead |
| CN206242136U (en) * | 2016-05-31 | 2017-06-13 | 岳西县岳工机械有限公司 | A kind of rotary head of Poria cocos processing machine and blades fit structure |
| CN107022944A (en) * | 2017-05-25 | 2017-08-08 | 徐州蓝湖信息科技有限公司 | A kind of surface fracture layer cutter plate |
| CN107143343A (en) * | 2017-06-30 | 2017-09-08 | 上海隧道工程有限公司 | A kind of shield cutter panel flushing system |
-
2017
- 2017-10-12 CN CN201710946051.7A patent/CN107989626B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH074180A (en) * | 1992-11-27 | 1995-01-10 | Keihin Kiyuukou Dentetsu Kk | Shield machine having cutting device for drain material or the like |
| US5460432A (en) * | 1993-03-29 | 1995-10-24 | Kabushiki Kaisha Komotsu Seisakusho | Cutter head for a tunnel excavator |
| JP2009203775A (en) * | 2008-02-29 | 2009-09-10 | Sanwa Kizai Co Ltd | Cutter head for crushing existing buried pipe |
| CN102359134A (en) * | 2011-08-08 | 2012-02-22 | 中交天津港航勘察设计研究院有限公司 | Reamer with hydraulic characteristic for dredger |
| CN206242136U (en) * | 2016-05-31 | 2017-06-13 | 岳西县岳工机械有限公司 | A kind of rotary head of Poria cocos processing machine and blades fit structure |
| CN106555594A (en) * | 2016-12-05 | 2017-04-05 | 中铁工程装备集团有限公司 | A kind of normal pressure tool changing cutterhead |
| CN107022944A (en) * | 2017-05-25 | 2017-08-08 | 徐州蓝湖信息科技有限公司 | A kind of surface fracture layer cutter plate |
| CN107143343A (en) * | 2017-06-30 | 2017-09-08 | 上海隧道工程有限公司 | A kind of shield cutter panel flushing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107989626A (en) | 2018-05-04 |
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