CN110067594B - Diving shuttle cabin transportation tool and construction method - Google Patents
Diving shuttle cabin transportation tool and construction method Download PDFInfo
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- CN110067594B CN110067594B CN201910434050.3A CN201910434050A CN110067594B CN 110067594 B CN110067594 B CN 110067594B CN 201910434050 A CN201910434050 A CN 201910434050A CN 110067594 B CN110067594 B CN 110067594B
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- 230000009189 diving Effects 0.000 title claims abstract description 14
- 238000010276 construction Methods 0.000 title abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 19
- 210000001503 joint Anatomy 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 40
- 238000003032 molecular docking Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 25
- 238000012423 maintenance Methods 0.000 abstract description 11
- 239000002002 slurry Substances 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/006—Equipment transport systems
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Jib Cranes (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
Abstract
The invention provides a diving shuttle cabin transportation tool and a construction method. The method comprises the following steps: transporting the shuttle cabin system to the lower part of the rear matched frame; the crane system is used for hoisting the shuttle cabin system to the temporary platform; the shuttle cabin system walks forwards until the shuttle cabin is positioned on the lifting system and stops; and the lifting system lifts the shuttle cabin to complete the butt joint of the shuttle cabin and the personnel cabin. The invention has the beneficial effects that: considering the universality with other lifting systems, only lifting platforms, temporary platforms and grabbing tools are added, so that the design cost is low, and the transportation is safe and reliable; the shuttle cabin transportation tool is simple in structure, safe and reliable in transportation process and convenient to operate, transportation of a shuttle cabin system can be rapidly achieved, and safety guarantee is made for starting and ending each time of slurry cabin emergency maintenance operation.
Description
Technical Field
The invention relates to tunnel construction equipment, in particular to a diving shuttle cabin transportation tool and a construction method.
Background
At present, tunnel construction is moving towards deeper and longer trends, the stability of the face of the ultra-large-diameter slurry shield machine is more and more difficult, and maintenance personnel are dangerous when entering a slurry cabin for operation, so that the slurry cabin pressure maintaining method (special pressure maintaining system) is often adopted for emergency maintenance of the large shield in the slurry cabin to stabilize the face. When the pressure is too high, the logistical assurance is a big difficulty when the maintenance personnel press into the mud-water bin. The saturated diving shuttle cabin system can solve the problem, can provide mixed gas composed of oxygen and helium for operators with helmets, can maintain high pressure of the muddy water cabin, and greatly ensures physical and mental health of maintenance personnel.
However, the existing underground engineering ultra-large diameter slurry shield machine in China is rarely provided with the system, and the research on the transportation scheme of the system is also in a blank stage. During the whole maintenance period, the shuttle cabin system needs to frequently come and go between a living cabin outside an originating well and a human cabin of a shield main machine, however, the shuttle cabin system comprises a plurality of devices, and is difficult and heavy to transport in a limited space of a shield machine structure, and the emergency maintenance time of the shield machine is greatly limited by the factors, so that the research of the shuttle cabin transport system has important significance. If the tool and the construction method are reasonably and effectively designed in the transportation process, the construction period is greatly shortened, and the safety is improved.
Disclosure of Invention
The invention provides a diving shuttle cabin transportation tool and a construction method, which mainly solve the problem that a shuttle cabin system is safely, conveniently and efficiently transported in a shield machine with limited operation space under an underground emergency maintenance state.
The technical scheme of the invention is realized as follows: the utility model provides a dive shuttle cabin transportation frock, includes back supporting frame, back supporting frame on be equipped with hoist system and the temporary platform that supplies shuttle cabin system to walk of hoist shuttle cabin system, the front portion of temporary platform is equipped with the lifting system.
The temporary platform is provided with a temporary track, and the shuttle cabin system walks on the temporary track.
The shuttle cabin system comprises a shuttle cabin, an autonomous vehicle and a material supply system, wherein the shuttle cabin is connected with the autonomous vehicle, the autonomous vehicle is connected with the material supply system, and the material supply system is communicated with the shuttle cabin.
A push-pull rod is arranged between the shuttle cabin and the self-driven vehicle.
And a grabbing tool is arranged between the crane system and the shuttle cabin system.
The grabbing tool comprises a sub-fastener and a female fastener, wherein the sub-fastener is detachably arranged on the shuttle cabin system, and the female fastener is detachably arranged on a lifting appliance of the crane system.
The temporary platform comprises a temporary platform I, a lifting platform, a temporary platform II and a temporary platform III, wherein the width of the two sides of the temporary platform I is smaller than the width of the two sides of the lifting platform, the width of the two sides of the temporary platform II and the width of the two sides of the temporary platform III.
Guard rails are arranged on two sides of the temporary platform.
The temporary platform comprises a lifting platform, and a lifting mechanism is arranged between the rear supporting frame and the lifting platform.
The lifting mechanism comprises an oil cylinder seat, an oil cylinder, a lifting frame and a sliding rail, wherein the oil cylinder seat and the sliding rail are fixed on the rear supporting frame, the oil cylinder seat is connected with the oil cylinder, the oil cylinder is connected with the lifting frame, and the lifting frame is in sliding fit with the sliding rail.
The lifting system comprises a lifting mechanism, a lifting platform, a docking mechanism and a docking platform, wherein the lifting mechanism is connected with the lifting platform, the sliding docking platform is arranged on the lifting platform, and the docking mechanism is arranged between the lifting platform and the docking platform.
The lifting system is arranged on the splicing machine.
The transportation construction method of the diving shuttle cabin comprises the following steps:
a, transporting the shuttle cabin system to the lower part of the rear matched frame;
b, starting a crane system on the matched frame, and hoisting the shuttle cabin system to the temporary platform;
c, the shuttle cabin system walks forwards until the shuttle cabin is positioned on the lifting system and stops;
and d, lifting the shuttle cabin by a lifting system to finish the butt joint of the shuttle cabin and the personnel cabin.
In the step a, a shuttle cabin system is transported by a transport vehicle.
In the step b, the crane system hangs the shuttle cabin system to the lifting platform, and the lifting mechanism drives the lifting platform to descend, so that the crane system is withdrawn.
In the step b, the crane system hangs the shuttle cabin to the temporary platform I, the self-propelled vehicle to the temporary platform II, the material supply system to the temporary platform III, the shuttle cabin is connected with the self-propelled vehicle through the push-pull rod, the self-propelled vehicle is connected with the material supply system, and the material supply system is communicated to the shuttle cabin.
In the step c, the shuttle cabin system comprises a shuttle cabin, an autonomous vehicle and a material supply system, wherein the autonomous vehicle provides power to drive the shuttle cabin and the material supply system to walk forwards along the temporary track.
In the step d, the lifting system comprises a lifting mechanism, a lifting platform, a docking mechanism and a docking platform, wherein the lifting mechanism is started, the lifting platform is lifted, the docking mechanism is started, and the docking platform drives the shuttle cabin to extend forwards, so that docking of the shuttle cabin and the person cabin is completed.
The invention achieves the functions or purposes: when encountering the urgent maintenance of mud sump in the construction of large-scale heavy load shield constructs the machine, this transportation frock can be safe, high-efficient, convenient with the cabin transportation of shuttleing back and forth to the people storehouse to the interface, has saved maintenance time greatly.
The invention has the beneficial effects that: considering the universality with other lifting systems, only lifting platforms, temporary platforms and grabbing tools are added, so that the design cost is low, and the transportation is safe and reliable; the shuttle cabin transportation tool is simple in structure, safe and reliable in transportation process and convenient to operate, transportation of a shuttle cabin system can be rapidly achieved, and safety guarantee is made for starting and ending each time of slurry cabin emergency maintenance operation.
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 schematic diagram of the structure of the present invention.
Fig. 2 is a schematic diagram of the structure of the grabbing tool of the present invention.
FIG. 3 is a schematic view of the initial zero configuration of the hoisting mechanism of the present invention.
Fig. 4 is a schematic diagram of the lowest position structure of the lifting mechanism of the invention.
Fig. 5 is a schematic structural view of a lifting mechanism according to the present invention.
Fig. 6 is a schematic view of the temporary platform structure according to the present invention.
In the figure: 1. the device comprises a rear supporting frame, 2, temporary rails, 3, a shuttle cabin, 4, a push-pull rod, 5, an automatic driving vehicle, 6, a material supply system, 7, a transport vehicle, 9, a crane system, 10, a grabbing tool, 1001-child fasteners, 1002-mother fasteners, 11, a temporary platform I,12, a lifting platform, 13, a lifting mechanism, 1301, an oil cylinder seat, 1302, an oil cylinder, 1303, a lifting frame, 1304, a sliding rail, 14, a temporary platform II,15, a temporary platform III,16, a person cabin, 17, a lifting system, 18 and a duct piece assembling machine.
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, the submersible shuttle house transportation fixture comprises a rear supporting frame 1, a shuttle cabin system, a crane system 9, a temporary platform and a lifting system 17.
As shown in fig. 2, the crane system 9 is arranged on the rear supporting frame 1, a grabbing tool 10 is arranged between the crane system 9 and the shuttle cabin system, the grabbing tool 10 comprises a sub-fastener 1001 and a female fastener 1002, the sub-fastener 1001 is connected to the bottom of the shuttle cabin system through bolts, the female fastener 1002 is connected to a lifting appliance of the crane system 9 through bolts, the sub-fastener 1001 of the shuttle cabin system is clamped in the female fastener 1002 of the lifting appliance, the crane system 9 can be guaranteed to grab the shuttle cabin system quickly and stably, and the crane system 9 lifts the shuttle cabin system to a temporary platform through the grabbing tool 10.
As shown in fig. 6, the fast detachable temporary platform comprises a temporary platform I11, a lifting platform 12, a temporary platform II13 and a temporary platform III14 which are sequentially arranged on the rear supporting frame 1, the operation area and the safety are increased, the width of two sides of the temporary platform I11 is smaller than the width of two sides of the lifting platform 12, the width of the temporary platform II13 and the width of two sides of the temporary platform III14, the temporary platform I11, the lifting platform 12, the temporary platform II13 and the temporary platform III14 are all provided with temporary rails 2 for the shuttle cabin system to walk, and guardrails are arranged on two sides of the temporary platform, so that the protection is improved during the construction of workers.
As shown in fig. 3 to 5, four synchronous lifting mechanisms 13 are arranged between the rear supporting frame 1 and the lifting platform 12, and are used for freeing up space for the crane system 9 when the crane system is retreated, the lifting mechanisms 13 comprise an oil cylinder seat 1301, an oil cylinder 1302, a lifting frame 1303 and a sliding rail 1304, the oil cylinder seat 1301 and the sliding rail 1304 are fixed on the rear supporting frame 1, the oil cylinder seat 1301 is connected with the oil cylinder 1302, the oil cylinder 1302 is connected with the lifting frame 1303, the lifting frame 1303 is in sliding fit with the sliding rail 1304, the lifting of the lifting frame 1303 is realized by the extension and retraction of the oil cylinder 1302, the sliding rail 1304 limits the lifting frame 1303, the deflection of the oil cylinder is avoided, the synchronous lifting of the four lifting mechanisms 13 can be realized by providing hydraulic oil for the four oil cylinders with synchronous valves by a hydraulic pump station, the stable lifting of the platform is ensured, the supporting frame structure of the lifting mechanism is convenient and fast in a fixing mode, and quick disassembly can be realized.
As shown in fig. 1, the shuttle cabin system comprises a shuttle cabin 3, an autonomous vehicle 5 and a material supply system 6, wherein after the shuttle cabin system is suspended to a temporary platform, the shuttle cabin 3 is connected with the autonomous vehicle 5, a push-pull rod 4 is arranged between the shuttle cabin 3 and the autonomous vehicle 5, the autonomous vehicle 5 is connected with the material supply system 6, the material supply system 6 is communicated with the shuttle cabin 3, the autonomous vehicle 5 is used as a power source to drive the whole shuttle cabin system to advance and retreat, and the material supply system 6 supplies oxygen and the like for the shuttle cabin system.
As shown in fig. 1, the lifting system 17 is disposed on the assembly machine 18, and includes a lifting mechanism, a lifting platform, a docking mechanism and a docking platform, where the lifting mechanism is connected with the lifting platform, the lifting platform is provided with a sliding docking platform, the docking mechanism is disposed between the lifting platform and the docking platform, the lifting mechanism is used for controlling lifting of the lifting platform, and the docking mechanism is used for controlling telescoping of the docking platform.
The transportation construction method of the diving shuttle cabin comprises the following steps:
a, transporting the shuttle cabin system to the lower part of the rear matched frame 1 by using a transport vehicle 7;
b, starting the crane system 9 on the matched frame 1, hoisting the shuttle cabin system to the lifting platform 12, and simultaneously driving the lifting platform 12 to descend by the lifting mechanism 13 so that the crane system 9 is withdrawn; the crane system 9 hangs the shuttle cabin 3 to the temporary platform I11, the self-propelled vehicle 5 to the temporary platform II14, the material supply system 6 to the temporary platform III15, the shuttle cabin 3 is connected with the self-propelled vehicle 5 through the push-pull rod 4, the self-propelled vehicle 5 is connected with the material supply system 6, and the material supply system 6 is communicated with the shuttle cabin 3;
c, providing power for the self-propelled vehicle 5, driving the shuttle cabin 3 and the material supply system 6 to walk forwards along the temporary track 2 on the temporary platform until the shuttle cabin 3 is stopped on the lifting system 17;
the lifting system 17 comprises a lifting mechanism, a lifting platform, a docking mechanism and a docking platform, wherein the lifting mechanism is started, the lifting platform is lifted, the docking mechanism is started, the docking platform drives the shuttle cabin 3 to extend forwards, and the docking of the shuttle cabin 3 and the person cabin 16 is completed.
The worker opens the cabin door, enters the muddy water cabin through the personnel cabin 16 to work, returns to the shuttle cabin 3 after finishing the work, closes the cabin door and withdraws in a reverse flow process. The whole process is mechanically operated, the transportation process is stable, and the safety and psychological stability of diving staff in the cabin are ensured to the maximum extent.
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 (7)
1. The method for transporting and constructing the diving shuttle cabin is characterized by comprising the following steps of:
a, transporting the shuttle cabin system to the lower part of the rear matched frame (1);
b, starting a crane system (9) on the matched frame (1) and hoisting the shuttle cabin system to the temporary platform;
c, the shuttle cabin system walks forwards until the shuttle cabin (3) is positioned on the lifting system (17) to stop;
d, lifting the shuttle cabin (3) by a lifting system (17) to finish the butt joint of the shuttle cabin (3) and the personnel cabin (16);
in the step c, the shuttle cabin system comprises a shuttle cabin (3), an autonomous vehicle (5) and a material supply system (6), wherein the autonomous vehicle (5) provides power to drive the shuttle cabin (3) and the material supply system (6) to walk forwards along the temporary track (2);
in the step b, the shuttle cabin system is hoisted to the lifting platform (12) by the crane system (9), and the lifting mechanism (13) drives the lifting platform (12) to descend so that the crane system (9) is withdrawn;
in the step b, the crane system (9) hangs the shuttle cabin (3) to the temporary platform I (11), the self-propelled vehicle (5) to the temporary platform II (14), the material supply system (6) to the temporary platform III (15), the shuttle cabin (3) is connected with the self-propelled vehicle (5) through the push-pull rod (4), the self-propelled vehicle (5) is connected with the material supply system (6), and the material supply system (6) is communicated with the shuttle cabin (3).
2. The method of constructing a submersible shuttle house according to claim 1, wherein: in the step d, the lifting system (17) comprises a lifting mechanism, a lifting platform, a docking mechanism and a docking platform, wherein the lifting mechanism is started, the lifting platform is lifted, the docking mechanism is started, the docking platform drives the shuttle cabin (3) to extend forwards, and docking of the shuttle cabin (3) and the person cabin (16) is completed.
3. The method of constructing a submersible shuttle house according to claim 1, wherein: the submersible shuttle cabin transportation tool comprises a rear supporting frame (1), wherein a crane system (9) for hoisting a shuttle cabin system and a temporary platform for the shuttle cabin system to walk are arranged on the rear supporting frame (1), and a lifting system (17) is arranged at the front part of the temporary platform.
4. The method for transporting and constructing the diving shuttle warehouse according to claim 3, wherein the method comprises the following steps: the shuttle cabin system comprises a shuttle cabin (3), an autonomous vehicle (5) and a material supply system (6), wherein the shuttle cabin (3) is connected with the autonomous vehicle (5), the autonomous vehicle (5) is connected with the material supply system (6), and the material supply system (6) is communicated with the shuttle cabin (3).
5. The method for transporting and constructing the diving shuttle warehouse according to claim 3, wherein the method comprises the following steps: a grabbing tool (10) is arranged between the crane system (9) and the shuttle cabin system.
6. The method for transporting and constructing the diving shuttle warehouse according to claim 3, wherein the method comprises the following steps: the temporary platform comprises a lifting platform (12), and a lifting mechanism (13) is arranged between the rear supporting frame (1) and the lifting platform (12).
7. The method for transporting and constructing the diving shuttle warehouse according to claim 3, wherein the method comprises the following steps: the lifting system (17) comprises a lifting mechanism, a lifting platform, a docking mechanism and a docking platform, wherein the lifting mechanism is connected with the lifting platform, the lifting platform is provided with a sliding docking platform, and the docking mechanism is arranged between the lifting platform and the docking platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434050.3A CN110067594B (en) | 2019-05-23 | 2019-05-23 | Diving shuttle cabin transportation tool and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434050.3A CN110067594B (en) | 2019-05-23 | 2019-05-23 | Diving shuttle cabin transportation tool and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110067594A CN110067594A (en) | 2019-07-30 |
| CN110067594B true CN110067594B (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910434050.3A Active CN110067594B (en) | 2019-05-23 | 2019-05-23 | Diving shuttle cabin transportation tool and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110067594B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB758372A (en) * | 1953-11-02 | 1956-10-03 | Mining Engineering Co Ltd | Improvements in regulators for the discharge of the load of mining shuttle cars |
| CN103397904A (en) * | 2013-08-21 | 2013-11-20 | 中交天和机械设备制造有限公司 | Downhole transportation method for shuttle cabin of ultra-large type shield tunneling machine |
| CN103790593A (en) * | 2014-02-27 | 2014-05-14 | 中交隧道工程局有限公司 | Shuttle cabin lifting device used on saturated condition with pressure |
| CN104061006A (en) * | 2014-06-06 | 2014-09-24 | 中交第二航务工程局有限公司 | Shuttle cabin carrying tool mounted on duct piece splicing machine |
| CN204327102U (en) * | 2014-11-28 | 2015-05-13 | 中交第二航务工程局有限公司 | Cabin operating system compressed into by slurry shield band based on saturation diving technology |
| CN205100985U (en) * | 2015-09-30 | 2016-03-23 | 中交天和机械设备制造有限公司 | Shield constructs saturation operation cabin of shuttling back and forth of opening cabin under condition of calming anger |
| CN206816256U (en) * | 2017-06-15 | 2017-12-29 | 中铁工程装备集团有限公司 | Shield machine normal pressure cutter head center chamber structure |
| CN210087379U (en) * | 2019-05-23 | 2020-02-18 | 中铁工程装备集团有限公司 | Diving shuttle cabin transportation tool |
-
2019
- 2019-05-23 CN CN201910434050.3A patent/CN110067594B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB758372A (en) * | 1953-11-02 | 1956-10-03 | Mining Engineering Co Ltd | Improvements in regulators for the discharge of the load of mining shuttle cars |
| CN103397904A (en) * | 2013-08-21 | 2013-11-20 | 中交天和机械设备制造有限公司 | Downhole transportation method for shuttle cabin of ultra-large type shield tunneling machine |
| CN103790593A (en) * | 2014-02-27 | 2014-05-14 | 中交隧道工程局有限公司 | Shuttle cabin lifting device used on saturated condition with pressure |
| CN104061006A (en) * | 2014-06-06 | 2014-09-24 | 中交第二航务工程局有限公司 | Shuttle cabin carrying tool mounted on duct piece splicing machine |
| CN204327102U (en) * | 2014-11-28 | 2015-05-13 | 中交第二航务工程局有限公司 | Cabin operating system compressed into by slurry shield band based on saturation diving technology |
| CN205100985U (en) * | 2015-09-30 | 2016-03-23 | 中交天和机械设备制造有限公司 | Shield constructs saturation operation cabin of shuttling back and forth of opening cabin under condition of calming anger |
| CN206816256U (en) * | 2017-06-15 | 2017-12-29 | 中铁工程装备集团有限公司 | Shield machine normal pressure cutter head center chamber structure |
| CN210087379U (en) * | 2019-05-23 | 2020-02-18 | 中铁工程装备集团有限公司 | Diving shuttle cabin transportation tool |
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| Publication number | Publication date |
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| CN110067594A (en) | 2019-07-30 |
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