CN109403992B - Freezing blade disc arrangement structure - Google Patents
Freezing blade disc arrangement structure Download PDFInfo
- Publication number
- CN109403992B CN109403992B CN201811428677.XA CN201811428677A CN109403992B CN 109403992 B CN109403992 B CN 109403992B CN 201811428677 A CN201811428677 A CN 201811428677A CN 109403992 B CN109403992 B CN 109403992B
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- Prior art keywords
- freezing
- block
- main
- circuit
- spoke
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- 238000007710 freezing Methods 0.000 title claims abstract description 103
- 230000008014 freezing Effects 0.000 title claims abstract description 100
- 238000005192 partition Methods 0.000 claims description 34
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002002 slurry Substances 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
-
- 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
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a freezing cutter head arrangement structure, which comprises a left block, a middle block and a right block, wherein freezing pipelines are respectively arranged on the left block, the middle block and the right block, the freezing pipelines on the left block and the right block are external freezing pipelines, the external freezing pipelines are arranged on the outer blocks of the large ring beams of the left block and the right block, the freezing pipelines on the middle block are internal freezing pipelines, and the internal freezing pipelines are arranged on the inner blocks of the large ring beams of the middle block. The beneficial effects are that: the large-diameter cutterhead is arranged in a segmented mode, after transportation, the on-site welding is carried out, the back freezing pipelines of the cutterhead are arranged in a segmented mode along the cutterhead, the back freezing pipelines can be subjected to factory welding, and the difficulty of transportation and on-site welding of the back freezing pipelines is reduced. The influence of the arrangement of the freezing pipeline on the large circular ring of the cutter disc and the notch ring is fully considered through the back of the large circular ring of the cutter disc, so that the freezing efficiency is accelerated, and the freezing effect is improved.
Description
Technical Field
The invention relates to the technical field of machining and manufacturing, in particular to a freezing cutter head arrangement structure.
Background
In the field of underground engineering, the application of shield construction is becoming wider and wider. At present, a normal-pressure direct bin opening method and a pressurized bin opening method are mainly adopted for opening the bin of the slurry balance shield machine. When the normal pressure direct bin opening method is adopted, water penetration easily occurs on the face and the top of the excavated space, and a large amount of sediment is carried into the mud water bin, so that serious accidents are caused. The pressurized cabin opening method has the problems of high construction difficulty, high technical difficulty, high cost and the like. Meanwhile, the refrigerating effect on the large circular ring and the notch ring of the cutter is not fully considered in the conventional refrigerating pipeline arrangement of some refrigerating cutters, and the problem of the cutter block transportation is not considered in some large-diameter (more than 7 m) refrigerating cutters, so that the refrigerating pipeline transportation and the field welding and pressure maintaining test are difficult.
Disclosure of Invention
The invention provides a refrigerating cutter head arrangement structure, which solves the problem that the existing refrigerating pipeline transportation and field welding and pressure maintaining test are difficult.
The technical scheme of the invention is realized as follows: the utility model provides a freezing blade disc arrangement structure, includes the blade disc, the blade disc include left side partition, well partition and right partition, be equipped with the freezing pipeline on left side partition, well partition and the right partition respectively, the freezing pipeline on left side partition and the right partition is outer freezing circuit, outer freezing circuit is arranged on the big ring roof beam outer partition of left side partition and right partition, the freezing pipeline on the well partition is interior freezing circuit, interior freezing circuit is arranged on the big ring roof beam inner partition of well partition.
The left block and the right block respectively comprise a main beam outer block, an auxiliary spoke beam and a large ring beam outer block, an outer freezing line is arranged on the large ring beam outer block, the main beam outer block and the auxiliary spoke beam, the middle block comprises a main spoke beam, a main spoke beam inner block, a main ring beam, a large ring beam inner block and an auxiliary spoke beam, the freezing line on the middle block is an inner freezing line, and the inner freezing line is arranged on the main spoke beam, the main spoke beam inner block, the auxiliary spoke beam, the main ring beam and the large ring beam inner block.
The outer freezing lines are arranged along the outer blocks of the large ring beam, the outer freezing lines extend from the outer blocks of the large ring beam to the outer blocks of the main beam and the auxiliary spoke beams, the inner freezing lines comprise peripheral freezing lines and central freezing lines, the peripheral freezing lines are arranged along the main ring beam, the peripheral freezing lines are arranged on the auxiliary spoke beams and the inner blocks of the large ring beam, and the central freezing lines are arranged on the main spoke beams and the inner blocks of the main spoke beams.
The left block and the right block respectively comprise a main beam outer block and an auxiliary spoke beam, the main beam outer block and the auxiliary spoke beam are respectively fixed on the large ring beam outer block, the middle block comprises a main spoke beam and a main spoke beam inner block, the main spoke beam and the main spoke beam inner block are respectively fixed on the main ring beam, the outer end of the main spoke beam is fixedly provided with the large ring beam inner block, an auxiliary spoke beam is arranged between the main ring beam and the large ring beam inner block, the large ring beam outer block is connected with the large ring beam inner block, the main ring beam outer block is connected with the main ring beam inner block, and the auxiliary spoke beam on the large ring beam outer block is connected with the main ring beam, and the main spoke beam inner block are connected into a whole at the center of the cutterhead.
And annular ribs are arranged between the main spoke beam and the auxiliary spoke beam.
The external freezing circuit comprises a first circuit and a second circuit which are symmetrical in center, the first circuit is positioned on the left block, the second circuit is positioned on the right block, the peripheral freezing circuit comprises a third circuit and a fourth circuit which are symmetrical in center, the central freezing circuit comprises a fifth circuit and a sixth circuit which are symmetrical in center, inlets of the first circuit, the second circuit, the third circuit, the fourth circuit, the fifth circuit and the sixth circuit are all positioned on one side of the center of the cutter disc, and outlets of the first circuit, the second circuit, the third circuit, the fourth circuit, the fifth circuit and the sixth circuit are all positioned on opposite sides of inlets of the center circuit of the cutter disc.
The freezing pipeline comprises a freezing groove positioned on the large ring beam and a freezing channel positioned on the main spoke beam and the auxiliary spoke beam, a wear-resistant layer is arranged on the freezing groove, and the freezing groove is communicated with the freezing channel.
The freezing channel at the inlet and outlet of the outer freezing circuit extends to the center of the cutterhead through a pipe.
The freezing groove is communicated with the freezing channel through a connecting block.
The main spoke beam on be equipped with the toolbox, be equipped with the hobbing cutter in the toolbox, the both sides of main spoke beam are equipped with the scraper, the both sides of vice spoke beam are equipped with the scraper.
The hob with the main spoke beam positioned at the center of the cutterhead is a duplex hob.
The scraper of the auxiliary spoke beam positioned at the edge of the cutterhead is an edge scraper.
The main spoke beam is provided with a composite super-digging cutter and a hob super-digging cutter.
The beneficial effects are that: the large-diameter cutterhead is arranged in a segmented mode, after transportation, the on-site welding is carried out, the back freezing pipelines of the cutterhead are arranged in a segmented mode along the cutterhead, the back freezing pipelines can be subjected to factory welding, and the difficulty of transportation and on-site welding of the back freezing pipelines is reduced. The influence of the arrangement of the freezing pipeline on the large circular ring of the cutter disc and the notch ring is fully considered through the back of the large circular ring of the cutter disc, so that the freezing efficiency is accelerated, and the freezing effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view of a cutterhead in accordance with the present invention.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a sectional view of B-B of fig. 1.
FIG. 4 is a diagram of a freeze line layout of the present invention.
Fig. 5 is a left and right block freezing pipeline layout diagram of the invention.
FIG. 6 is a block refrigeration circuit layout I of the present invention.
FIG. 7 is a second block refrigeration circuit layout according to the present invention.
FIG. 8 is a block diagram of a freeze circuit according to the present invention.
In the figure: 1-main spoke beam, 2-auxiliary spoke beam, 3-main ring beam, 4-large ring beam, 5-ring rib, 6-hob, 7-tool box, 8-scraper, 9-duplex hob, 10-composite super-digging cutter, 11-hob super-digging cutter, 12-edge scraper, 20-freezing pipeline, 22-freezing groove, 23-wear-resisting layer, 24-connecting block and 26-freezing channel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, a freezing cutterhead arrangement structure comprises a cutterhead body, the cutterhead body comprises a main spoke beam 1 and an auxiliary spoke beam 2, the inner sides of the main spoke beam 1, which are positioned in the center of the cutterhead, are connected into a whole, the middle of the main spoke beam 1 is fixed on a main ring beam 3, the outer sides of the main spoke beam 1 are fixed on a large ring beam 4, the outer sides of the auxiliary spoke beam 2 are fixed on the large ring beam 4, the inner sides of the auxiliary spoke beam 2 are fixed on the main ring beam 3, a ring rib 5 is fixed between the main spoke beam 1 and the auxiliary spoke beam 2, a cutter box 7 is arranged on the main spoke beam 1, a hob 6 is arranged in the cutter box 7, wherein the hob 6 positioned in the center of the cutterhead is a duplex hob 9, scrapers 8 are arranged on two sides of the main spoke beam 1 and the auxiliary spoke beam 2, the scrapers 8 positioned on the outer sides of the auxiliary spoke beam 2 are edge scrapers 12, and a composite super-digging cutter 10 and a hob super-digging cutter 11 are arranged on the outer sides of the main spoke beam 1.
As shown in fig. 4-7, the cutterhead comprises a left partition block, a middle partition block and a right partition block, wherein the left partition block and the right partition block comprise a large ring beam outer partition block, a main spoke beam outer partition block and an auxiliary spoke beam 2, the main spoke beam outer partition block and the auxiliary spoke beam 2 are fixed on the large ring beam outer partition block at intervals, the middle partition block comprises a main spoke beam 1, a main spoke beam inner partition block, a main ring beam 3 and a large ring beam inner partition block, the main spoke beam 1 and the main spoke Liang Nafen are positioned at the inner side of the center of the cutterhead and connected into a whole, the middle part of the main spoke beam 1 is fixed on the main ring beam 3, the outer side of the main spoke beam 3 is fixedly connected with the large ring beam inner partition block, the outer side of the main spoke beam inner partition block is fixed on the main ring beam 3, and the auxiliary spoke beam 2 is arranged between the large ring beam inner partition block and the main ring beam 3.
The left block, the middle block and the right block are respectively provided with a freezing pipeline 20, the freezing pipeline 20 comprises a first line positioned on the left block, a second line positioned on the right block and third, fourth, fifth and sixth lines positioned on the middle block, the first line and the second line are centrally symmetrical, and the first line and the second line are respectively arranged along the outer large ring beam block and then are extended and arranged on the outer main spoke beam block and the outer auxiliary spoke beam 2, the third line and the fourth line are centrally symmetrical, the third line and the fourth line are respectively arranged on the inner main ring beam 3, the auxiliary spoke beam 2 and the inner large ring beam block, the fifth line and the sixth line are centrally symmetrical, the fifth line and the sixth line are respectively arranged on the inner main spoke beam 1 and the inner main spoke beam block, and meanwhile the first line, the second line, the third line, the fourth line, the fifth line and the sixth inlet and the outlet are respectively positioned on two sides opposite to the center of the cutter disc.
As shown in fig. 8, the freezing pipeline 20 comprises a freezing groove 22 and a freezing channel 26, the freezing groove 22 is positioned on the large circular ring beam 4 and is sealed by a wear-resistant layer 23, the freezing channel 26 is positioned in the main spoke beam 1 and the auxiliary spoke beam 2, and the freezing groove 22 is communicated with the freezing channel 26 by a connecting block 24.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The utility model provides a freezing blade disc arrangement structure, includes the blade disc, its characterized in that: the cutter head comprises a left block, a middle block and a right block, wherein freezing pipelines (20) are respectively arranged on the left block, the middle block and the right block, the freezing pipelines (20) on the left block and the right block are outer freezing pipelines, the outer freezing pipelines are arranged on the outer blocks of the large ring beams of the left block and the right block, the freezing pipelines (20) on the middle block are inner freezing pipelines, and the inner freezing pipelines are arranged on the inner blocks of the large ring beams of the middle block.
2. The freezer cutterhead arrangement of claim 1, wherein: the left block and the right block respectively comprise a main beam outer block, an auxiliary spoke beam (2) and a large ring beam outer block, an outer freezing line is arranged on the large ring beam outer block, the main beam outer block and the auxiliary spoke beam (2), the middle block comprises a main spoke beam (1), a main spoke beam inner block, a main ring beam (3), a large ring beam inner block and an auxiliary spoke beam (2), the freezing line (20) on the middle block is an inner freezing line, and the inner freezing line is arranged on the main spoke beam (1), the main spoke beam inner block, the auxiliary spoke beam (2), the main ring beam (3) and the large ring beam inner block.
3. The freezer cutterhead arrangement of claim 2, wherein: the outer freezing circuit is arranged along the outer partition of the large ring beam, the outer freezing circuit extends from the outer partition of the large ring beam to the outer partition of the main beam and the auxiliary spoke beam (2), the inner freezing circuit comprises a peripheral freezing circuit and a central freezing circuit, the peripheral freezing circuit is arranged along the main ring beam (3), the peripheral freezing circuit is arranged on the auxiliary spoke beam (2) and the inner partition of the large ring beam, and the central freezing circuit is arranged on the main spoke beam (1) and the inner partition of the main spoke beam.
4. A freezer cutterhead arrangement according to claim 3, wherein: the external freezing circuit comprises a first circuit and a second circuit which are symmetrical in center, the first circuit is positioned on the left block, the second circuit is positioned on the right block, the peripheral freezing circuit comprises a third circuit and a fourth circuit which are symmetrical in center, the central freezing circuit comprises a fifth circuit and a sixth circuit which are symmetrical in center, inlets of the first circuit, the second circuit, the third circuit, the fourth circuit, the fifth circuit and the sixth circuit are all positioned on one side of the center of the cutter disc, and outlets of the first circuit, the second circuit, the third circuit, the fourth circuit, the fifth circuit and the sixth circuit are all positioned on opposite sides of inlets of the center circuit of the cutter disc.
5. The freezer cutterhead arrangement of claim 1, wherein: the left block and the right block respectively comprise a main beam outer block and an auxiliary spoke beam (2), the main beam outer block and the auxiliary spoke beam (2) are respectively fixed on the main ring beam outer block, the middle block comprises a main spoke beam (1), a main spoke beam inner block and a main ring beam (3), the main spoke beam (1) and the main spoke beam inner block are respectively fixed on the main ring beam (3), the main spoke beam (1) is fixed with the main ring beam inner block at the outer end, the auxiliary spoke beam (2) is arranged between the main ring beam (3) and the main ring beam inner block, the main ring beam outer block is connected with the main ring beam inner block, and the auxiliary spoke beam (2) on the main ring beam outer block is connected with the main ring beam (3), and the main spoke beam (1) and the main spoke beam inner block are connected into a whole at the center of a cutter disc.
6. The freezer cutterhead arrangement of claim 5, wherein: the freezing pipeline (20) comprises a freezing groove (22) positioned on the large circular beam (4) and a freezing channel (26) positioned on the main spoke beam (1) and the auxiliary spoke beam (2), the freezing groove (22) is provided with a wear-resistant layer (23), and the freezing groove (22) is communicated with the freezing channel (26).
7. The freezer cutterhead arrangement of claim 6, wherein: a freezing channel (26) at the inlet and outlet of the outer freezing circuit extends to the center of the cutterhead through a pipe.
8. The freezer cutterhead arrangement of claim 6, wherein: the freezing groove (22) is communicated with the freezing channel (26) through a connecting block (24).
9. The cryocutter head arrangement of claim 2 or 5 wherein: the novel spoke comprises a main spoke beam (1), wherein a cutter box (7) is arranged on the main spoke beam (1), a hob (6) is arranged in the cutter box (7), scrapers (8) are arranged on two sides of the main spoke beam (1), and scrapers (8) are arranged on two sides of the auxiliary spoke beam (2).
10. The cryocutter head arrangement of claim 9 wherein: the main spoke beam (1) is provided with a composite super-digging cutter (10) and a hob super-digging cutter (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811428677.XA CN109403992B (en) | 2018-11-27 | 2018-11-27 | Freezing blade disc arrangement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811428677.XA CN109403992B (en) | 2018-11-27 | 2018-11-27 | Freezing blade disc arrangement structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109403992A CN109403992A (en) | 2019-03-01 |
| CN109403992B true CN109403992B (en) | 2024-03-22 |
Family
ID=65455869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811428677.XA Active CN109403992B (en) | 2018-11-27 | 2018-11-27 | Freezing blade disc arrangement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109403992B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989764A (en) * | 2019-05-21 | 2019-07-09 | 中国铁建重工集团股份有限公司 | Normal pressure tool changing cutter head with freezing function |
| CN114922635B (en) * | 2022-05-27 | 2023-04-18 | 中建交通建设集团有限公司 | Parallel freezing system for shield underground butt joint and abandoned shell disassembly and construction method |
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| JPH0468188A (en) * | 1990-07-06 | 1992-03-03 | Nippon Tetsudo Kensetsu Kodan | Execution method of tunnel widening section |
| CN105239620A (en) * | 2015-10-29 | 2016-01-13 | 中铁工程装备集团有限公司 | Frozen soil trench excavating cutter provided with hobs |
| CN105298505A (en) * | 2015-11-16 | 2016-02-03 | 中国铁建重工集团有限公司 | Earth pressure balance shield machine with freezing function and tool change method thereof |
| CN105298506A (en) * | 2015-11-16 | 2016-02-03 | 中国铁建重工集团有限公司 | Slurry balance shield machine with freezing function |
| CN105422108A (en) * | 2015-11-16 | 2016-03-23 | 广东华隧建设股份有限公司 | Tool changing method based on slurry balanced shield machine with freezing function |
| CN106522970A (en) * | 2016-12-30 | 2017-03-22 | 中铁工程装备集团有限公司 | Shield cutter head with refrigeration function and shield tunneling machine |
| CN107387100A (en) * | 2017-08-22 | 2017-11-24 | 中铁工程装备集团有限公司 | A kind of shield machine for possessing freezing and reinforcing function |
| JP2018178529A (en) * | 2017-04-13 | 2018-11-15 | ケミカルグラウト株式会社 | Freezing pipe and freezing method |
| CN108843336A (en) * | 2018-07-02 | 2018-11-20 | 中国铁建重工集团有限公司 | Development machine, development machine cutterhead and cutter replacing method |
| CN209354141U (en) * | 2018-11-27 | 2019-09-06 | 中铁工程装备集团有限公司 | Freeze cutterhead arragement construction |
-
2018
- 2018-11-27 CN CN201811428677.XA patent/CN109403992B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0468188A (en) * | 1990-07-06 | 1992-03-03 | Nippon Tetsudo Kensetsu Kodan | Execution method of tunnel widening section |
| CN105239620A (en) * | 2015-10-29 | 2016-01-13 | 中铁工程装备集团有限公司 | Frozen soil trench excavating cutter provided with hobs |
| CN105298505A (en) * | 2015-11-16 | 2016-02-03 | 中国铁建重工集团有限公司 | Earth pressure balance shield machine with freezing function and tool change method thereof |
| CN105298506A (en) * | 2015-11-16 | 2016-02-03 | 中国铁建重工集团有限公司 | Slurry balance shield machine with freezing function |
| CN105422108A (en) * | 2015-11-16 | 2016-03-23 | 广东华隧建设股份有限公司 | Tool changing method based on slurry balanced shield machine with freezing function |
| CN106522970A (en) * | 2016-12-30 | 2017-03-22 | 中铁工程装备集团有限公司 | Shield cutter head with refrigeration function and shield tunneling machine |
| JP2018178529A (en) * | 2017-04-13 | 2018-11-15 | ケミカルグラウト株式会社 | Freezing pipe and freezing method |
| CN107387100A (en) * | 2017-08-22 | 2017-11-24 | 中铁工程装备集团有限公司 | A kind of shield machine for possessing freezing and reinforcing function |
| CN108843336A (en) * | 2018-07-02 | 2018-11-20 | 中国铁建重工集团有限公司 | Development machine, development machine cutterhead and cutter replacing method |
| CN209354141U (en) * | 2018-11-27 | 2019-09-06 | 中铁工程装备集团有限公司 | Freeze cutterhead arragement construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109403992A (en) | 2019-03-01 |
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