CN107740695B - A kind of novel shield hobboing cutter - Google Patents
A kind of novel shield hobboing cutter Download PDFInfo
- Publication number
- CN107740695B CN107740695B CN201711008998.XA CN201711008998A CN107740695B CN 107740695 B CN107740695 B CN 107740695B CN 201711008998 A CN201711008998 A CN 201711008998A CN 107740695 B CN107740695 B CN 107740695B
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- China
- Prior art keywords
- cutter
- ring
- cutter hub
- bearing block
- seal
- 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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- 239000004519 grease Substances 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 22
- 239000011435 rock Substances 0.000 description 6
- 208000002925 dental caries Diseases 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (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)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of novel shield hobboing cutters, including cutter ring, cutter hub, dynamic support component of turning left and dynamic support component of turning right；The structure for turning left and right support component is identical and is located at the two sides of cutter hub, and dynamic support component of turning left includes bearing block, tapered roller bearing, float grease seal seat and flange plate.The tapered roller bearing of two sides is installed face-to-face, and is located in the bearing block of two sides, and float grease seal seat is between taper roller inner ring and bearing block；It is mounted on dust-proof seal ring between each bearing block side and cutter hub, reversed metal float grease seal is mounted between each bearing block other side and cutter hub.Shield hobboing cutter of the present invention uses the integrated design of cutter shaft cutter hub, and two sleeve bearing surface opposites are installed, and uses dual-seal and design, and keeps the higher intensity of hobboing cutter, sealing reliability and stability more preferable.
Description
Technical field
The present invention relates to a kind of cutters of shield machine, and in particular to a kind of novel shield being mounted on cutter head of shield machine
Hobboing cutter.
Background technique
Shield machine as a kind of advanced, efficient, environmentally friendly high-end equipment of set of tunneling construction, with its high degree of automation,
Drivage efficiency height, construction safety disturb the advantages that small to rock stratum around as city underground, highway, municipal piping lane, water conservancy and hydropower
The preferred equipment of equal engineering tunnels tunneling construction.And " tooth " of the shield cutter as shield machine, it is mounted on cutter head panel, presses
Arrangement, directly contacts with ground, is the critical component of shield machine tunneling construction before different tracks radius is convex.
Shield hobboing cutter is a kind of broken rock cutter, main to act on attrition crushing rock by rolling compaction of the cutter ring to rock stratum,
The quality of shield hobboing cutter performance directly determines the efficiency of breaking rock of shield machine.The mark of widely applied shield hobboing cutter currently on the market
Quasi- structure, as shown in figure 3, be that two sets of tapered roller bearings are mounted on back-to-back in the inner cavity of the same cutter hub, cutter ring assembly
In cutter hub outer circle.Cutter shaft is motionless when work, and cutter ring is rotated with cutter hub and bearing outer ring around cutter shaft, while hobboing cutter is with knife
Cutter head center revolution is coiled, to achieve the purpose that fractured rock.However the generally existing following defect of the hobboing cutter of existing structure: one,
It is limited by bearing, cutter ring fitted position, so that the wall thickness of cutter hub is also restrained；Cutter hub wall thickness not enough then its structural strength
Not enough, it is carrying in the biggish work condition environment of larger or shock loading, is easily occurring leading to knife because of cutter hub deformation, fragmentation, fracture
The problem of body damage failure.Two, it since two sets of tapered roller bearings are mounted on the same cutter hub inner cavity, only floats by two sides metal
To seal, the reliability and stability of sealing are poor, the problem of seal failure often occur for sealing；Once seal failure, silt
Cutter hub inner cavity, damage stuck so as to cause bearing will be entered from cutter hub side, hobboing cutter is forced to stop working.Three, current hobboing cutter
The dynamic sealing of two sides is using traditional metal float grease seal, as shown in figure 4, including two symmetrical beckets, two metals
Be affixed between ring by the sealing surface of high flatness and roughness, form a dynamic sealing interface at an upper portion thereof, becket with
Pressure is transmitted by the O-ring seal of compression between closed type chamber, to guarantee that seal interface fits closely realization sealing.But it is this
Sealing can only use under work condition environment of the inside and outside differential pressure less than 0.3Mpa, when edpth of tunnel is larger in actual work progress
When, extra large river-crossing tunnel was such as built, often will appear the case where inside and outside differential pressure is greater than 0.3MPa.Therefore, when extraneous and inside
When pressure difference is greater than 0.3MPa, the O-ring seal intracavitary positioned at closed type can push type chamber opening side to by the pressure that outside applies
To O-ring seal leads to seal failure after being squeezed and deformed landing, and mud enters inside hobboing cutter, so that hobboing cutter be caused to damage.Four,
Although the hobboing cutter of existing structure is equipped with end cap in the two sides of its tapered roller bearing, but since two sets of tapered roller bearings are pacified
Mounted in the same cutter hub inner cavity, once breaking down, roller bearing, cutter shaft, cutter hub, oil sealing can only be removed one by one, it could be right
Repair and replacement are carried out at failure, therefore are repaired comparatively laborious and with high costs.
Summary of the invention
To solve the above-mentioned problems, the object of the present invention is to provide a kind of hob cutter for shield machine of brand new, the hobboing cutters
Using cutter shaft cutter hub integrated design, bearing is installed face-to-face, and use dual-seal and design, makes the intensity of hobboing cutter more
High, sealing reliability and stability are more preferable.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of novel shield hobboing cutter, which is characterized in that including cutter ring, cutter hub, turn left dynamic support component and right rotational support
Component；The cutter hub is integrated hub structure, i.e., cutter hub is integrated with former cutter shaft.It is described to turn left to move support component and the right side
Rotational support component is located at the two sides of cutter hub, and dynamic support component of turning left includes bearing block, tapered roller bearing, float grease seal
Seat and flange plate, the tapered roller bearing include taper roller outer ring and taper roller inner ring, dynamic support component of turning right
Structure is identical as dynamic support component of turning left.The tapered roller bearing of two sides is installed face-to-face, and is located at the bearing block of two sides
Interior, the outside of the bearing block of two sides is separately installed with flange plate by screw, float grease seal seat be located at taper roller inner ring with
Between bearing block.Dust-proof seal ring, each bearing block are mounted between the step outer of each bearing block and cutter hub cooperation
Reversed metal float grease seal is mounted between inner hole and the cooperation of cutter hub spindle nose, reversed metal float grease seal includes two symmetrical
Becket, two closed type chambers, each closed type is intracavitary to be equipped with O-ring seal, one of becket and closed type chamber
On float grease seal seat, another becket and closed type chamber are located on bearing block, the lower part phase on the inside of two beckets
Patch, forms a seal interface.
Further, it is airtight cavity inside bearing block, is filled with lubricating oil in bearing block.
Further, the cutter ring interference hot charging is in the outer circle of cutter hub, to keep the enough power of clasping, prevent cutter ring with
Cutter hub relatively rotates.
Further, retaining ring is installed between the cutter ring and cutter hub, moving is even de- not from cutter hub to ensure cutter ring
It falls.
Further, the taper roller inner ring with positioning pin retaining ring by being mounted on the spindle nose of cutter hub, the circle
Cone roller outer ring is mounted in bearing block, and taper roller inner ring and taper roller outer ring form revolute pair.
Further, O-ring seal one is provided between the float grease seal seat and cutter hub spindle nose, it is ensured that external environment mud
The gap that water does not pass through between float grease seal seat and cutter hub enters the intracavitary portion of closed type.
Further, O-ring seal two is provided in the step outer circle of the flange plate, it is ensured that external environment muddy water is not
Enter the intracavitary portion of closed type by the gap between flange plate and bearing block.
Compared with the prior art, the advantages of the present invention are as follows:
1, the monoblock type cutter hub of wheel hub structure is to integrate the cutter shaft of existing hobboing cutter and cutter hub, to increase
The intensity and rigidity of cutter hub are being carried larger or are being hit in biggish work condition environment, and cutter hub deformation, fragmentation, fracture occurs in reduction
The case where etc. causing cutter hub to damage.
2, two sets of bearings of existing hobboing cutter are shared into a cutter hub inner cavity, is changed to two sets of bearings and occupies two independent chambers respectively
Body, and be not connected to each other between two cavitys, it is lubricated respectively, improves the stability and reliability of operating.
3, two sets of bearings are located in each independent cavity, when daily maintenance or breakdown maintenance, due to two cavitys
Between be not connected to each other, therefore be not required to remove all components simultaneously, maintenance is convenient.In the course of work, even if wherein a set of
Because failure causes to damage, other set bearing can also continue to use bearing.
4, double-layer sealing structure is used, the sealing reliability and stability of cutter hub are more preferable.Between bearing block and cutter hub
Dust-proof seal ring is mounted with, as the first seal structures for completely cutting off extraneous dust and dregs.Second sealing is using reversed gold
Belong to float grease seal, silt, mud can be further prevented to enter cutter hub inner cavity, avoid because sundries enter due to cause bearing it is stuck,
The phenomenon that damage, extends the service life of hobboing cutter.
5, the reversed metal float grease seal that uses of the present invention is compared with traditional metal float grease seal that existing hobboing cutter uses,
Its sealing effect is more preferable, and reason is to revolutionize the structure of existing hobboing cutter, so that external pressure enters inside cutter hub
Path is different from the path inside traditional hobboing cutter is entered, and pressure is transmitted by the O-ring seal of compression, to guarantee two beckets
The seal interface of inside fits closely, to realize sealing.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention
Fig. 2 is overall structure section of the invention
Fig. 3 is existing hobboing cutter overall structure sectional view
Fig. 4 is the partial enlarged view at Fig. 3 B
Fig. 5 is the partial enlarged view at Fig. 2A
In figure: 1, cutter ring, 2, retaining ring, 3, cutter hub, 4, bearing block, 5, flange plate, 6, band positioning pin retaining ring, 7, circular cone
Roller inner ring, 8, taper roller outer ring, 9, O-ring seal two, 10, screw, 11, O-ring seal one, 12, float grease seal seat,
13, reversed metal float grease seal, 13.1, becket, 13.2, closed type chamber, 13.3, O-ring seal, 13.4, seal interface,
13.5, type chamber is open, 14, dust-proof seal ring, 15, end cap, 16, tapered roller bearing, 17, cutter shaft, 18, bearing inner race, 19, axis
Bearing outer-ring, 20, common float grease seal, 20.1, becket, 20.2, closed type chamber, 20.3, O-ring seal, 20.4, sealing circle
Face, 20.5, type chamber opening.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention, what is recorded below is only preferred implementation of the invention
Example, of course, the scope of rights of the present invention cannot be limited by this, therefore equivalent variations made by claim according to the present invention, still
Belong to the range that the present invention is covered.
A kind of novel shield hobboing cutter, as shown in Figure 1 and Figure 2, including cutter ring 1, cutter hub 3, dynamic support component of turning left and right-hand rotation are dynamic
Support component.The cutter hub 3 is integrated hub structure, which is independently setting the cutter hub 3 of existing hobboing cutter and cutter shaft 17
Former cutter hub and cutter shaft are integrated formula cutter hub 3, to increase as shown in figure 3, being changed to cutter hub, cutter shaft unitary design by meter
The intensity and rigidity for having added cutter hub 3 are being carried larger or are being hit in biggish work condition environment, and reduction the deformation of cutter hub 3 occurs, collapses
The case where broken, fracture etc. causes cutter hub 3 to damage.
The 1 interference hot charging of cutter ring, to keep the enough power of clasping, prevents cutter ring 1 and cutter hub 3 in the outer circle of cutter hub 3
It relatively rotates.Retaining ring 2 is installed between the cutter ring 1 and cutter hub 3, to ensure that cutter ring 1 is even de- not from moving on cutter hub 3
It falls.
It is described to turn left to move the two sides that support component is located at cutter hub 3 with dynamic support component of turning right, it turns right and moves support component
Structure it is identical as dynamic support component of turning left.Two sets of tapered roller bearings 16 of existing hobboing cutter are shared into 3 inner cavity of cutter hub, are such as schemed
Shown in 3, be changed to two sets of roller bearings and occupy two independent cavitys respectively, as depicted in figs. 1 and 2, and between two cavitys that
This is not connected to, and is lubricated respectively, improves the stability and reliability of hobboing cutter operating.
Dynamic support component of turning left includes bearing block 4, tapered roller bearing, float grease seal seat 12 and flange plate 5.The circle
Taper roller bearing includes taper roller outer ring 8 and taper roller inner ring 7, and taper roller inner ring 7 passes through band positioning pin retaining ring 6 and pacifies
On the spindle nose of cutter hub 3, taper roller outer ring 8 is mounted in bearing block 4, taper roller inner ring 7 and 8 shape of taper roller outer ring
At revolute pair.It is airtight cavity inside the bearing block 4, is filled with lubricating oil in bearing block 4.
The tapered roller bearing of two sides is installed face-to-face, and is located in the bearing block 4 of two sides, the bearing block 4 of two sides
Outside flange plate 5 is separately installed with by screw 10, float grease seal seat 12 be located at taper roller inner ring 7 and bearing block 4 it
Between.
The step outer of each bearing block 4 and cutter hub 3 are mounted on dust-proof seal ring 14 between cooperating, outer as isolation
First seal structures of boundary's dust and dregs.
It is mounted on reversed metal float grease seal 13 between each 4 inner hole of bearing block and the cooperation of 3 spindle nose of cutter hub, reversed gold
Belonging to float grease seal 13 includes two symmetrical beckets, 13.1, two closed type chambers 13.2, is all provided in each closed type chamber 13.2
There is O-ring seal 13.3, one of becket 13.1 and closed type chamber 13.2 are located on float grease seal seat 12, another gold
Belong to ring 13.1 and closed type chamber 13.2 is located on bearing block 4, the lower part of two 13.1 insides of becket is affixed, and forms a sealing
Interface 13.4.Reversed metal float grease seal 13 is used as the second seal structures, and silt, mud can be further prevented to enter cutter hub 3
Inner cavity avoids the phenomenon that leading to stuck bearing, damage because of sundries entrance, extends the service life of hobboing cutter.
O-ring seal 1 is provided between 3 spindle nose of the float grease seal seat 12 and cutter hub, it is ensured that external environment muddy water is not
Entered inside closed type chamber 13.2 by the gap between float grease seal seat 12 and cutter hub 3.
O-ring seal 29 is provided in the step outer circle of the flange plate 5, it is ensured that external environment muddy water does not pass through method
Gap between blue cover board 5 and bearing block 4 enters inside closed type chamber 13.2.
The present invention revolutionizes the structure of existing hobboing cutter, is in particular in:
One, the cutter ring 1 of existing hobboing cutter is integrated with cutter hub 3, as shown in figure 3, cutter shaft 17 is motionless when work, cutter ring 1 is with knife
Body 3 and bearing outer ring 19 are rotated around cutter shaft 17 together.The present invention is that former cutter hub and cutter shaft are integrated formula wheel hub structure,
As depicted in figs. 1 and 2, cutter ring 1 is rotated together with monoblock type cutter hub 3, and rigidity is more preferable, more resistant to impact.
Two, two sets of bearings 16 of existing hobboing cutter share a cutter hub inner cavity, and two sets of bearings of the invention occupy two independences respectively
Cavity, and be not connected to each other between two cavitys.
The present invention carries out above-mentioned change to hob-cutter structure, so that external pressure enters the path inside cutter hub and enters tradition
Path inside hobboing cutter is different.Change in location such as Fig. 4 of the O-ring seal when external pressure increases of common metal float grease seal 20
Shown, the trend that arrow indicates in figure is that external pressure enters the path inside cutter hub.External pressure from 3 side of cutter hub with
Enter between bearing block 4, the O-ring seal 20.3 in closed type chamber 20.2 can push type chamber opening direction to by pressure
20.5, O-ring seal 20.3 leads to seal failure after being squeezed and deformed landing, and mud enters inside hobboing cutter, so that hobboing cutter be caused to damage
It is bad.And change in location such as Fig. 5 institute of the reversed metal float grease seal 13 that the present invention uses O-ring seal when external pressure increases
Show, the trend that arrow indicates in figure is that external pressure enters the path inside cutter hub.External pressure is from 3 top of cutter hub and axis
It holds and enters between seat 4, respectively to two closed type chambers 13.5 pressuring directions of opening, two O-ring seals 13.3 all can be by pressure
Push 13.2 other end of closed type chamber to, to guarantee that the seal interface 13.4 of two 13.1 lower insides of becket fits closely, from
And realize sealing.
By the change of above-mentioned hob-cutter structure, the present invention is used using reversed metal float grease seal 13 with existing hobboing cutter general
Logical metal float grease seal 20 is compared, and sealing effect is more preferable.
In addition, the seal interface 20.4 of existing common metal float grease seal 20 is in the upper of two 20.1 inside of becket
Portion, lower part of the seal interface 13.4 of the reversed metal float grease seal 13 of the present invention on the inside of two becket 13.1.It will sealing
Interface 13.4 is set to the lower part of 13.1 inside of becket, more conducively sealing surface stability under loading.13.4 top of seal interface is formed
Low-angle inclined-plane be easier that lubricating oil is guided by capillarity to enter sealing surface, to reach optimal lubricant effect.
Claims (7)
1. a kind of novel shield hobboing cutter, which is characterized in that including cutter ring, cutter hub, turn left dynamic support component and right rotational support group
Part；The cutter hub is integrated hub structure, i.e., cutter hub is integrated with former cutter shaft；
It is described to turn left to move the two sides that support component is located at cutter hub with dynamic support component of turning right, turn left to move the structure of support component
Dynamic support component is identical with turning right；Dynamic support component of turning left includes bearing block, tapered roller bearing, float grease seal seat and blind flange
Plate, the tapered roller bearing include taper roller outer ring and taper roller inner ring；The tapered roller bearing of two sides is pacified face-to-face
Dress, and be located in the bearing block of two sides, the outside of the bearing block of two sides is separately installed with flange plate by screw, floats
Oil seal seat is between taper roller inner ring and bearing block；It is respectively mounted between the step outer of each bearing block and cutter hub cooperation
There is dust-proof seal ring, is mounted on reversed metal float grease seal between each inner hole of bearing seat and the cooperation of cutter hub spindle nose；Reversely
Metal float grease seal includes two symmetrical beckets, two closed type chambers, and each closed type is intracavitary to be equipped with O-ring seal,
One of becket and closed type chamber are located on float grease seal seat, another becket and closed type chamber are located at bearing block
On, the lower part on the inside of two beckets is affixed, and forms a seal interface.
2. novel shield hobboing cutter as described in claim 1, which is characterized in that be airtight cavity, axis inside the bearing block
It holds and is filled with lubricating oil in seat.
3. novel shield hobboing cutter as claimed in claim 1 or 2, which is characterized in that the cutter ring interference hot charging is in cutter hub
In outer circle.
4. novel shield hobboing cutter as claimed in claim 3, which is characterized in that be equipped with retaining ring between the cutter ring and cutter hub.
5. novel shield hobboing cutter as claimed in claim 4, which is characterized in that the taper roller inner ring passes through band and positions lock
Tight ring is mounted on the spindle nose of cutter hub, and the taper roller outer ring is mounted in bearing block, taper roller inner ring and taper roller
Outer ring forms revolute pair.
6. novel shield hobboing cutter as claimed in claim 5, which is characterized in that set between the float grease seal seat and cutter hub spindle nose
It is equipped with O-ring seal one.
7. novel shield hobboing cutter as claimed in claim 6, which is characterized in that be provided in the step outer circle of the flange plate
O-ring seal two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008998.XA CN107740695B (en) | 2017-10-25 | 2017-10-25 | A kind of novel shield hobboing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008998.XA CN107740695B (en) | 2017-10-25 | 2017-10-25 | A kind of novel shield hobboing cutter |
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| Publication Number | Publication Date |
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| CN107740695A CN107740695A (en) | 2018-02-27 |
| CN107740695B true CN107740695B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711008998.XA Active CN107740695B (en) | 2017-10-25 | 2017-10-25 | A kind of novel shield hobboing cutter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219989A (en) * | 2019-07-15 | 2019-09-10 | 湖北金稽山机械科技有限公司 | A kind of floating seal pair |
| CN110374615A (en) * | 2019-07-23 | 2019-10-25 | 中建三局集团有限公司 | A kind of combination cutter ring Hob for cutting rock for Suporting structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010540805A (en) * | 2007-09-25 | 2010-12-24 | キャタピラー インコーポレイテッド | Rotating cutter for tunnel boring machine |
| CN202882933U (en) * | 2012-11-02 | 2013-04-17 | 张洪明 | Novel shield tunneling machine hobbing cutter |
| CN204140083U (en) * | 2014-10-16 | 2015-02-04 | 山东天工岩土工程设备有限公司 | A kind of core pack arrangement hobboing cutter |
-
2017
- 2017-10-25 CN CN201711008998.XA patent/CN107740695B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010540805A (en) * | 2007-09-25 | 2010-12-24 | キャタピラー インコーポレイテッド | Rotating cutter for tunnel boring machine |
| CN202882933U (en) * | 2012-11-02 | 2013-04-17 | 张洪明 | Novel shield tunneling machine hobbing cutter |
| CN204140083U (en) * | 2014-10-16 | 2015-02-04 | 山东天工岩土工程设备有限公司 | A kind of core pack arrangement hobboing cutter |
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| CN107740695A (en) | 2018-02-27 |
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