CN109630147A - A kind of engagement type multi-cutter-disk excavating device and the development machine including the device - Google Patents
A kind of engagement type multi-cutter-disk excavating device and the development machine including the device Download PDFInfo
- Publication number
- CN109630147A CN109630147A CN201910030283.7A CN201910030283A CN109630147A CN 109630147 A CN109630147 A CN 109630147A CN 201910030283 A CN201910030283 A CN 201910030283A CN 109630147 A CN109630147 A CN 109630147A
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- Prior art keywords
- cutterhead
- disk
- cutter
- section
- knife
- 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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Links
- 241000251468 Actinopterygii Species 0.000 claims description 7
- 210000000003 hoof Anatomy 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 7
- 239000002689 soil Substances 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 3
- 239000004927 clay Substances 0.000 abstract description 2
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect 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
- E21D9/03—Driving non-circular tunnels
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 proposes a kind of engagement type multi-cutter-disk excavating device and the development machine including the device, the device includes cutter head, cutter head includes the side cutterhead and end cutterhead for being mounted on same section, side cutterhead is located at the left and right sides of section and is symmetrical arranged, and side cutterhead is engaged with end cutterhead.Advantages of the present invention: the geology such as loess, pan soil, silty clay, quicksand, completely decomposed rock are adapted to, all cutterheads are all in the same plane, convenient for being improved to the dregs removed from face, and dregs in soil cabin is stirred abundant, reduce the generation of large clod when excavating face, is conducive to earth pressure balance mode and tunnels；Meanwhile to be arranged such that driving is distributed in shield body unique for this cutterhead, causes reasonable segmented construction, conducive to long-distance transportation and reduces on-site assembly bring risk etc..
Description
Technical field
The present invention relates to constructing tunnel equipment technical field, particularly relate to a kind of engagement type multi-cutter-disk excavating device and including
The development machine of the device.
Background technique
In current constructing tunnel, shield technique is fast, dirty with its high degree of automation, construction safety degree height, construction speed
The advantages such as small, at low cost are contaminated, are gradually used widely.Wherein, shield machine be it is a kind of using the collection machinery of shield method, electronics,
The technologies such as hydraulic, laser and control are in the high mechanization of one and the driving lining cutting complete set of equipments of automation.
The mountain tunnels such as domestic road and rail are often u-shaped cross-section, tunnel excavation usually using full section drill burst method,
The tradition engineering method such as benching tunnelling method, CD method, CRD method, two side-wall pilot tunnel, to realize that personnel are safer, execution conditions are more environmentally friendly, the duration
Shorter, demands such as cost control is less expensive, domestic and international professional technician to horse-shoe tunnel using shield construction into
It has gone numerous studies, has realized that the mechanical type excavated is varied, such as: " a kind of slurry-water balance type shape of a hoof shield machine " utilizes
The knife cutting that one big circular beater plate and special-shaped cutterhead (eccentric swing) form goes out horse-shoe tunnel, utilizes mud and water balance mode
It keeps excavating face stability；" a kind of large section shape of a hoof shield machine " utilizes earth pressure balance principle, is distributed using several front and backs
Circular beater plate excavated, the section of jurisdiction finished using newest ring assembly carries out the propulsion of complete machine as brace foundation, and the type is
Possess successful application case covering Sinorael, Baicheng tunnel, road；" it is a kind of for horse-shoe tunnel can cast-in-place supporting shield
Machine " it is tunneled using earth pressure balance principle, using basic as stretching apart from the section of jurisdiction that the far assembly of host finishes, by friction
The counter-force of offer, and by the propulsion of lever+flexural pivot power transmission progress complete machine, it excavates using three dise knifes in the same plane
Disk and three eccentric circular cutting disks are composed；" special section tunnel shield excavation machine " (Hitachi Zosen Corporation) passes through
Using digging control device and according to the advance and retreat amount of the corner of cutterhead and profiling cutter, the advance and retreat amount of each cutterhead spoke is controlled,
Minor axis part is excavated with cutterhead spoke when profiling cutter retreats, and excavates major diameter part when profiling cutter is prominent, can be easy
Excavation special section tunnel；" a kind of cutter head and its synchronisation control means of rectangular shield " (Shanghai tunnel), by setting
Angle setting is different with the first cutterhead of preceding piece housing and the second cutterhead, the eccentric multi-shaft positioned at the first cutterhead and the second cutterhead rear
Shape cutterhead, the first cutter plate driver for driving the first cutterhead to circle, for driving the second cutterhead to circle
Second cutter plate driver, the eccentric multi-shaft abnormity cutter plate driver for driving the eccentric rotary motion of eccentric multi-shaft abnormity cutterhead work, the
One cutterhead and the second cutterhead are X-shaped spoke type structure cutterhead, and set angle difference is 80-100 degree, the first cutterhead and the second cutterhead
Center away from less than the sum of the first cutterhead and the radius of the second cutterhead.First cutterhead and the second cutterhead do not collide mutually and
First working face is excavated, and eccentric multi-shaft abnormity cutterhead is cut in the second working face memory, and entire cutter head is disconnected in rectangle
Maximum area is cut in face, makes entire excavation face in rectangle, reaches cutting etc. comprehensively.
It is to sum up known, it is varied for the technology of special-shaped tunnel excavation both at home and abroad, with their own characteristics.There is currently big for the country
The mountain tunnel project of V grades of soft rock Soft Clays, and mostly two-wire high-speed rail project are measured, horse-shoe tunnel section is very big, in the world
It is also rare in constructing tunnel case, it is contemplated that entire construction cost and safety, first choice are dug using earth pressure balance mode shield
Into.Cost of equipment cost is huge, is cut the higher demand of soil body flow brought by u-shaped cross-section ultra-wide in order to solve,
Need that a kind of construction reliability is very high, cost relative moderate, sediment improvement preferably excavates system schema.
Summary of the invention
The present invention proposes a kind of engagement type multi-cutter-disk excavating device and the development machine including the device, solves existing driving
Machine cost is huge, is not suitable with the high problem of ultra-wide u-shaped cross-section cutting soil body flow demand.
The technical scheme of the present invention is realized as follows: a kind of engagement type multi-cutter-disk excavating device, including cutter head, institute
The cutter head stated includes the side cutterhead and end cutterhead for being mounted on same section, and side cutterhead is located at the left and right sides of section
And be symmetrical arranged, side cutterhead is engaged with end cutterhead.
The section is the shape of a hoof.
The side cutterhead includes cutterhead two, cutterhead three, cutterhead four and cutterhead five, and cutterhead two, cutterhead three are located at cutterhead
The left and right sides of section lower part, cutterhead two, cutterhead three are engaged with lower end cutterhead, and cutterhead four, cutterhead five are located at cutterhead section
The left and right sides on top, cutterhead two are engaged with cutterhead four, and cutterhead three is engaged with cutterhead five, and cutterhead four, cutterhead five are and upper end
Cutterhead engagement.
The end cutterhead includes upper end cutterhead and lower end cutterhead, is nibbled on the upside of upper end cutterhead and side cutterhead
It closes, lower end cutterhead is engaged with the downside of side cutterhead.
The upper end cutterhead includes cutterhead six, and cutterhead six is located at the upside in the middle part of section, cutterhead six and side cutterhead
Upside engagement, lower end cutterhead includes cutterhead one, and cutterhead one is located at the downside in the middle part of cutterhead section, cutterhead one and side cutterhead
Downside engagement.
The end cutterhead includes cutterhead one and cutterhead six, and side cutterhead includes cutterhead two, cutterhead three, cutterhead four and knife
Disk five, cutterhead one are located at the downside in the middle part of cutterhead section, and cutterhead two, cutterhead three are located at the left and right sides of cutterhead section lower part, knife
Disk two, cutterhead three are engaged with cutterhead one, and cutterhead four, cutterhead five are located at the left and right sides on cutterhead section top, cutterhead two and knife
Disk four engages, and cutterhead three engages with cutterhead five, and cutterhead six is located at the upside in the middle part of section, cutterhead four, cutterhead five respectively with cutterhead
Six engagements.
It further include the auxiliary cutterhead for being mounted on same section.
The auxiliary cutterhead includes the auxiliary cutterhead positioned at section periphery.
The auxiliary cutterhead includes the auxiliary cutterhead positioned at section center.
The side cutterhead and end cutterhead includes center fish tail knife, knife beam, rack sleeve and cutter, center fish tail
Knife is mounted on the middle part of rack sleeve, and knife beam is mounted on rack sleeve in spoke-like, and cutter is mounted on knife beam.
The knife beam is arranged in X-shaped.
A kind of development machine including above-mentioned engagement type multi-cutter-disk excavating device.
Advantages of the present invention: the geology such as loess, pan soil, silty clay, quicksand, completely decomposed rock are adapted to, all cutterheads are all
In the same plane, convenient for being improved to the dregs removed from face, and dregs in soil cabin is stirred sufficiently, is reduced out
The generation of large clod when digging face is conducive to earth pressure balance mode and tunnels；Meanwhile this cutterhead is arranged such that driving in shield body
Distribution is unique, causes reasonable segmented construction, conducive to long-distance transportation and reduces on-site assembly bring risk etc..
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is cutter head structural schematic diagram of the present invention.
Fig. 2 is X-shaped cutter head structure schematic diagram of the present invention.
Fig. 3 is development machine structural schematic diagram of the present invention.
In figure: 1. cutter heads, 101. cutterheads one, 102. cutterheads two, 103. cutterheads three, 104. cutterheads four, 105. cutterheads
Five, 106. cutterheads six, 2. drive systems, 3. shield bodies, 4. screw conveyors, 5. assembling machines, the center 101a. fish tail knife, 101b. knife
Beam, 101c. rack sleeve, 101d. cutter, 101e. collar tie beam.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figs. 1-2, a kind of engagement type multi-cutter-disk excavating device, including cutter head 1, cutter head 1 include being mounted on together
The cutterhead 1 of one u-shaped cross-section, cutterhead 2 102, cutterhead 3 103, cutterhead 4 104, cutterhead 5 105, cutterhead 6 106 and auxiliary
Help cutterhead.Cutterhead 1 is located at the downside in the middle part of cutterhead section, and cutterhead 2 102, cutterhead 3 103 are located at cutterhead section lower part
The left and right sides, cutterhead 2 102, cutterhead 3 103 are engaged with cutterhead 1, and cutterhead 4 104, cutterhead 5 105 are located at cutterhead section
The left and right sides on top, cutterhead 2 102 are engaged with cutterhead 4 104, and cutterhead 3 103 is engaged with cutterhead 5 105, and cutterhead 6 106
Upside in the middle part of section, cutterhead 4 104, cutterhead 5 105 are engaged with cutterhead 6 106 respectively.Assisting cutterhead includes section periphery
With the auxiliary cutterhead at center, for supplementing the gap between cutterhead.
Cutterhead one to six is X-shaped cutterhead, including center fish tail knife 101a, knife beam 101b, rack sleeve 101c, cutter
101d, collar tie beam 101e and reinforcing beam 101f, center fish tail knife 101a are mounted on the middle part of rack sleeve 101c, and knife beam 101b is in X
Shape is spoke-like to be mounted on rack sleeve 101c, and cutter 101d is mounted on knife beam 101b, two knife beam similar in X-shaped opposite side
Collar tie beam 101e and reinforcing beam 101f is equipped between 101b.
The workflow of the present embodiment is as follows:
Cutter head in referring to Fig.1, it is assumed that cutterhead one uses acute angle center line first phase folded by two knife beams to be directed toward 6 directions to rise
The quasi- rotation counterclockwise of primordium, is positive with rotation counterclockwise, firstly, cutterhead two and one first phase angle of cutterhead are -115 °, cutterhead three with
One first phase angle of cutterhead is -65 °, when cutterhead one rotates counterclockwise, cutterhead two and cutterhead three rotate clockwise and alternately with
Its " engagement ", mutually indepedent, synchronous rotary and non-interference；Similarly, cutterhead five (rotation counterclockwise) is than (the rotation counterclockwise of cutterhead one
Turn) it is 5 ° advanced, cutterhead four (counterclockwise rotation) and cutterhead one (rotation counterclockwise) are -5 ° advanced, cutterhead five (rotation counterclockwise) with
Cutterhead three (rotating clockwise) engagement, cutterhead four (rotation counterclockwise) are engaged with cutterhead two (rotating clockwise)；Cutterhead six and knife
One direction of rotation of disk is identical with first phase, and respectively at X-shaped cutterhead four (rotation counterclockwise), X-shaped cutterhead five (rotation counterclockwise) phase
Engagement.Six cutterheads rotate in the same plane, mutually indepedent between each cutterhead, non-interference, and rotary joint is synchronous, this
Sample, six cutterheads collective fit to excavate out u-shaped cross-section, remaining area arranges several minor diameter spoke wheel supplement auxiliary
It excavates.
Embodiment 2
As shown in figure 3, a kind of development machine of engagement type multi-cutter-disk excavating device, including cutter head described in embodiment 11, drive
Dynamic system 2, shield body 3, screw conveyor 4 and assembling machine 5, cutter head 1 are mounted on the front end of shield body 3, the driving system in shield body 3
Cutterhead rotation in 2 driving cutter head 1 of system, each cutterhead of cutter head 1 configure a drive system 2, helical feed
The back that machine 4 is located at cutterhead is used to carry out prefabricated section of jurisdiction assembled for conveying dregs, the tail portion that assembling machine 5 is located at shield body 3.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of engagement type multi-cutter-disk excavating device, including cutter head (1), it is characterised in that: cutter head (1) packet
The side cutterhead and end cutterhead for being mounted on same section are included, side cutterhead is located at the left and right sides of section and is symmetrical arranged, side
Portion's cutterhead is engaged with end cutterhead.
2. engagement type multi-cutter-disk excavating device according to claim 1, it is characterised in that: the section is the shape of a hoof.
3. engagement type multi-cutter-disk excavating device according to claim 1, it is characterised in that: the side cutterhead includes knife
Disk two (102), cutterhead three (103), cutterhead four (104) and cutterhead five (105), cutterhead two (102), cutterhead three (103) are located at knife
The left and right sides of disk section lower part, cutterhead two (102), cutterhead three (103) are engaged with lower end cutterhead, cutterhead four (104), knife
Disk five (105) is located at the left and right sides on cutterhead section top, and cutterhead two (102) is engaged with cutterhead four (104), cutterhead three (103)
It is engaged with cutterhead five (105), cutterhead four (104), cutterhead five (105) are engaged with upper end cutterhead.
4. engagement type multi-cutter-disk excavating device according to claim 1 or 3, it is characterised in that: the end cutterhead packet
Upper end cutterhead and lower end cutterhead are included, upper end cutterhead is engaged with the upside of side cutterhead, lower end cutterhead and side cutterhead
Downside engagement.
5. engagement type multi-cutter-disk excavating device according to claim 4, it is characterised in that: the upper end cutterhead includes
Cutterhead six (106), cutterhead six (106) are located at the upside in the middle part of section, and cutterhead six (106) is engaged with the upside of side cutterhead, under
End cutterhead includes cutterhead one (101), and cutterhead one (101) is located at the downside in the middle part of cutterhead section, cutterhead one (101) and side knife
It engages the downside of disk.
6. engagement type multi-cutter-disk excavating device according to claim 1, it is characterised in that: the end cutterhead includes knife
Disk one (101) and cutterhead six (106), side cutterhead include cutterhead two (102), cutterhead three (103), cutterhead four (104) and cutterhead
Five (105), cutterhead one (101) are located at the downside in the middle part of cutterhead section, and cutterhead two (102), cutterhead three (103) are located at cutterhead section
The left and right sides of lower part, cutterhead two (102), cutterhead three (103) are engaged with cutterhead one (101), cutterhead four (104), cutterhead five
(105) it is located at the left and right sides on cutterhead section top, cutterhead two (102) is engaged with cutterhead four (104), cutterhead three (103) and knife
Disk five (105) engagement, cutterhead six (106) are located at the upside in the middle part of section, cutterhead four (104), cutterhead five (105) respectively with cutterhead
Six (106) engagement.
7. engagement type multi-cutter-disk excavating device according to claim 1, it is characterised in that: further include being mounted on same section
Auxiliary cutterhead, auxiliary cutterhead includes the auxiliary cutterhead positioned at section periphery, and auxiliary cutterhead includes the auxiliary positioned at section center
Cutterhead.
8. engagement type multi-cutter-disk excavating device according to claim 1, it is characterised in that: the side cutterhead and end
Cutterhead includes center fish tail knife (101a), knife beam (101b), rack sleeve (101c) and cutter (101d), center fish tail knife
(101a) is mounted on the middle part of rack sleeve (101c), and knife beam (101b) is mounted on rack sleeve (101c) in spoke-like, cuts
Knife (101d) is mounted on knife beam (101b).
9. engagement type multi-cutter-disk excavating device according to claim 8, it is characterised in that: the knife beam (101b) is in X
Shape arrangement.
10. the development machine that one kind includes any engagement type multi-cutter-disk excavating device of claim 1 ~ 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910030283.7A CN109630147A (en) | 2019-01-14 | 2019-01-14 | A kind of engagement type multi-cutter-disk excavating device and the development machine including the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910030283.7A CN109630147A (en) | 2019-01-14 | 2019-01-14 | A kind of engagement type multi-cutter-disk excavating device and the development machine including the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630147A true CN109630147A (en) | 2019-04-16 |
Family
ID=66061809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910030283.7A Pending CN109630147A (en) | 2019-01-14 | 2019-01-14 | A kind of engagement type multi-cutter-disk excavating device and the development machine including the device |
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| Country | Link |
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| CN (1) | CN109630147A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130912A (en) * | 2019-06-20 | 2019-08-16 | 中铁工程服务有限公司 | A kind of earth pressure balance shield machine cutterhead for the construction of Soft Soil Layer benching tunnelling method |
| CN112664209A (en) * | 2021-01-29 | 2021-04-16 | 中铁工程装备集团有限公司 | Vertical quasi-elliptical full-section tunnel shield machine |
| CN113125187A (en) * | 2021-04-29 | 2021-07-16 | 中铁工程装备集团有限公司 | Meshing blade disc comprehensive test device |
| CN113898356A (en) * | 2021-09-15 | 2022-01-07 | 山东优拓工程装备有限公司 | Cutter head system for rectangular section tunnel excavation equipment |
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| JP2004131992A (en) * | 2002-10-09 | 2004-04-30 | Taisei Corp | Shield machine |
| JP2006112165A (en) * | 2004-10-18 | 2006-04-27 | Hitachi Zosen Corp | Excavation method and device of shield machine |
| CN204941556U (en) * | 2015-07-29 | 2016-01-06 | 中铁工程装备集团有限公司 | A kind of special-shaped development machine for single line soft rock tunnel |
| CN206346743U (en) * | 2016-12-28 | 2017-07-21 | 中铁工程装备集团有限公司 | A kind of shield excavates system with big cross section horse-shoe tunnel |
| CN209483358U (en) * | 2019-01-14 | 2019-10-11 | 中铁工程装备集团有限公司 | Engagement type multi-cutter-disk excavating device and the development machine including the device |
-
2019
- 2019-01-14 CN CN201910030283.7A patent/CN109630147A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004131992A (en) * | 2002-10-09 | 2004-04-30 | Taisei Corp | Shield machine |
| JP2006112165A (en) * | 2004-10-18 | 2006-04-27 | Hitachi Zosen Corp | Excavation method and device of shield machine |
| CN204941556U (en) * | 2015-07-29 | 2016-01-06 | 中铁工程装备集团有限公司 | A kind of special-shaped development machine for single line soft rock tunnel |
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| CN209483358U (en) * | 2019-01-14 | 2019-10-11 | 中铁工程装备集团有限公司 | Engagement type multi-cutter-disk excavating device and the development machine including the device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130912A (en) * | 2019-06-20 | 2019-08-16 | 中铁工程服务有限公司 | A kind of earth pressure balance shield machine cutterhead for the construction of Soft Soil Layer benching tunnelling method |
| CN112664209A (en) * | 2021-01-29 | 2021-04-16 | 中铁工程装备集团有限公司 | Vertical quasi-elliptical full-section tunnel shield machine |
| CN113125187A (en) * | 2021-04-29 | 2021-07-16 | 中铁工程装备集团有限公司 | Meshing blade disc comprehensive test device |
| CN113898356A (en) * | 2021-09-15 | 2022-01-07 | 山东优拓工程装备有限公司 | Cutter head system for rectangular section tunnel excavation equipment |
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