CN113859474B - Installation method of ship side pushing sealing cover - Google Patents
Installation method of ship side pushing sealing cover Download PDFInfo
- Publication number
- CN113859474B CN113859474B CN202111279852.5A CN202111279852A CN113859474B CN 113859474 B CN113859474 B CN 113859474B CN 202111279852 A CN202111279852 A CN 202111279852A CN 113859474 B CN113859474 B CN 113859474B
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- cover
- sealing cover
- ship
- welding
- ship body
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- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000009434 installation Methods 0.000 title claims description 10
- 238000003466 welding Methods 0.000 claims abstract description 44
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 17
- 210000001503 joint Anatomy 0.000 claims description 9
- 239000003973 paint Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/30—Moving or transporting modules or hull blocks to assembly sites, e.g. by rolling, lifting or floating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to the technical field of ship side pushing equipment, and discloses a method for installing a ship side pushing sealing cover, wherein a side pushing sealing cover device, a ship outer plate and a side pushing sealing cover cylinder are welded to form a sealing cover assembly; transporting the two sealing cover assemblies to the positions of the port and starboard close to the guide cover respectively; pushing the left and right side cover assemblies into the cabin respectively and temporarily suspending and fixing the left and right side cover assemblies; centering the cover assembly and the guide cover; measuring reserved cutting amounts of the left and right side cover cylinders; cutting the left and right side cover cylinders; centering the cover assembly and the guide cover again; welding the sealing cover cylinder body, the guide cover and the ship body; welding all butt welds according to the process sequence; and (5) back-installing the sealing cover blade and installing the half spacer bush. The ship has the advantages of high fitting degree of the side pushing sealing cover and the ship body, less ship body bubbles and underwater radiation noise generated by the side pushing guiding cover, high working precision of acoustic equipment equipped with the ship, and smooth and attractive appearance of the ship body.
Description
Technical Field
The invention relates to the technical field of ship side pushing equipment, in particular to a method for installing a ship side pushing sealing cover.
Background
Scientific research vessels are commonly equipped with a submarine detection system to obtain data of extremely high application value such as submarine sediment environments, submarine resources and the like. The transducers of the subsea detection system will typically be arranged at the outer plate of the bottom of the bow, close to the side thrust location. When the ship sails, the side-pushing air guide sleeve can generate a large amount of bubbles and underwater radiation noise because the side-pushing air guide sleeve cuts off the line shape of the ship body, and the bubbles and the underwater radiation noise can greatly interfere the working accuracy of the energy converter. In order to minimize these disturbances, scientific research vessels are typically equipped with side-pushing cover devices that automatically close the vanes to cover the side-pushing pod when the side-pushing is not in operation, thereby reducing air bubbles and underwater radiation noise.
Typically, side-push capping devices are installed on both sides of the pod, but the specific location of installation may vary. Some side pushing sealing cover devices are arranged in the side pushing air guide sleeve and close to the ship body outer plate, and some side pushing sealing cover devices are arranged at two ends of the air guide sleeve. Both the above-mentioned installation forms can play the effect of isolating the internal water flow of kuppe, but because the side pushing closing cap device does not fully laminate the hull line type, still can produce some bubbles and underwater radiation noise when the boats and ships are in operation, cause the interference to the operational accuracy of acoustic equipment. And the flow guide cover body can be deformed due to heating during assembly and welding due to a large number of welding operations, and once the deformation is controlled insufficiently, or the left allowance of the side pushing cover cylinder body manufactured according to the theoretical inner diameter of the flow guide cover is too large or too small, the side pushing cover is not installed or the gap between the cover and the side pushing cover is too large after the side pushing cover is installed, so that the actual use effect of the side pushing cover can be influenced.
Disclosure of Invention
The invention aims to solve the technical problems that: the installation method of the ship side pushing sealing cover is high in the degree of fit between the side pushing sealing cover and a ship body, the ship body bubbles and underwater radiation noise generated by the side pushing flow guide cover are small, the working accuracy of acoustic equipment of a ship is high, the ship body is smooth in appearance, and attractive in appearance.
In order to solve the technical problems, the invention provides a method for installing a ship side pushing seal cover, which comprises the following steps:
s1, welding a side pushing sealing cover device, a ship body outer plate and a side pushing sealing cover cylinder body to form a sealing cover assembly;
s2, respectively transporting the two sealing cover assemblies to the positions of the port and starboard close to the guide cover, and checking whether the protection of the rotating shaft of the sealing cover blade is complete and reliable;
s3, dismantling a bracket used in the transportation process, respectively hanging the left side cover assembly and the right side cover assembly into a cabin-entering tool, respectively pushing the left side cover assembly and the right side cover assembly into a cabin, and temporarily supporting and hanging the left side cover assembly and the right side cover assembly;
s4, moving the left side cover assembly and the right side cover assembly to align with the air guide sleeve;
s5, taking 2n continuous rib positions of a ship body as measurement positions, taking 2n measurement points A at corresponding positions on a left ship body outer plate, taking 2n measurement points B at corresponding positions on a right ship body outer plate, respectively measuring distances between n groups of left cover outer plates and the measurement points A, respectively measuring distances between n groups of right cover outer plates and the measurement points B, marking cutting points A1 and B1 at corresponding positions of measured points A, B on side pushing cover cylinder bodies positioned on the left side and the right side along the midship direction, and reserving the distances between the cutting points A1 and B1 and the tail ends of the guide hoods as reserved cutting amounts;
s6, cutting the cutting points A1 and B1, and chamfering the butt-joint girth weld of the guide sleeve according to actual welding requirements after cutting is completed;
s7, repeating the step S4, and centering the sealing cover assembly and the air guide sleeve again;
s8, welding and fixing the sealing cover cylinder body, the guide cover and the ship body;
s9, all butt welding seams are welded according to the process sequence;
s10, the cover blade is assembled, the half spacer bush is installed, and the cover blade is locked by screws.
In step S4, as a preferred embodiment of the present invention, the specific steps are as follows:
aligning rib position rib plates of the sealing cover cylinder with rib position rib plates of the ship body, enabling the upper surface of a calibration process block of the sealing cover cylinder to be parallel to the horizontal middle shaft surface of the air guide sleeve and enabling the distance between the upper surface of the calibration process block and the horizontal middle shaft surface of the air guide sleeve to be smaller than 3mm, and completing centering of the sealing cover assembly and the air guide sleeve; wherein, the calibration process block is positioned at the front side and the rear side of the sealing cover cylinder body.
In the preferred scheme of the invention, in the step S7, the distance between the cover outer plate and the ship body outer plate is smaller than 4mm while the cover assembly and the air guide sleeve are centered again, and the rib plate of the cover cylinder is aligned with the rib plate of the ship body.
As a preferred embodiment of the present invention, in step S9, the specific steps are as follows:
9.1, firstly welding circumferential welds of the sealing cover cylinder body and the guide cover; 9.2, welding the butt joint rib plate of the ship body and the butt joint rib plate of the lower part of the sealing cover cylinder body again, and processing the butt joint weld at the boundary of the peripheral liquid tank according to the watertight bulkhead; 9.3, welding butt welding seams of the outer plate of the ship body and the outer plate of the sealing cover again; and 9.4, welding butt welding seams between the upper part of the sealing cover cylinder body and the ship body.
In step S9.1, the circumferential weld is divided into a plurality of segments along the circumference, and the welding legs are welded in a diagonal jump manner.
In a preferred embodiment of the present invention, in step S10, when paint on the surface of the capping blade is locally damaged during the refitting process, the damaged position is repaired.
As a preferred aspect of the present invention, in step S2, the capping assembly is transported using a lifting device.
Compared with the prior art, the installation method of the ship side pushing sealing cover has the beneficial effects that:
the side pushing sealing cover is installed by the method, so that the side pushing sealing cover is completely attached to the ship body, the ship body bubbles and underwater radiation noise generated by the side pushing air guide cover can be reduced, the working accuracy of acoustic equipment equipped by the ship is further improved, the ship body is smooth in appearance, and attractive in appearance; in addition, the sealing cover outer plate is arranged on the sealing cover cylinder body, and then the sealing cover outer plate is connected with the ship body into a whole, so that the linear smoothness of the appearance of the ship body can be further improved.
Drawings
Fig. 1 is a schematic structural view of a method for installing a ship side push cover according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the installation of a side-push closure cylinder with a side-push closure cylinder;
FIG. 3 is a schematic diagram of the structure of a calibration process block;
FIG. 4 is a schematic view of a measurement point and a cutting point;
fig. 5 is a schematic diagram of the measurement point a.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the present invention as indicated by the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 5, the preferred embodiment of the installation method of the ship side pushing cover provided by the invention comprises the following steps:
s1, welding a side pushing sealing cover device, a ship body outer plate 1 and a side pushing sealing cover cylinder 10 to form a sealing cover assembly;
s2, respectively transporting the two sealing cover assemblies to the positions of the port and starboard close to the guide cover 2, checking whether the protection of the sealing cover blade rotating shaft 7 is complete and reliable, and paying attention to the protection in the follow-up step at any time;
s3, dismantling a bracket used in the transportation process, respectively hanging the left side cover assembly 3 and the right side cover assembly 4 into a cabin entering tool 5, respectively pushing the left side cover assembly 3 and the right side cover assembly 4 into a cabin, and temporarily supporting and hanging the left side cover assembly 3 and the right side cover assembly 4;
s4, moving the left side cover assembly 3 and the right side cover assembly 4 to align with the air guide sleeve 2;
s5, taking 2n continuous rib positions of a ship body as measurement positions, taking 2n measurement points A at corresponding positions on a left ship body outer plate 1, in the embodiment, n=3, taking 2n measurement points B at corresponding positions on a right ship body outer plate 1, respectively measuring distances d1 between n groups of left cover outer plates and the measurement points A, distances d2 between n groups of right cover outer plates and the measurement points B, and marking cutting points A1 and B1 of corresponding positions of measured points A, B on side pushing cover cylinder bodies 10 positioned on the left side and the right side along the ship midship direction, wherein the distances between the cutting points A1 and B1 and the tail ends of guide hoods 2 are reserved cutting amounts d3 and d4;
s6, cutting the cutting points A1 and B1, and chamfering the butt-joint girth weld of the air guide sleeve 2 according to actual welding requirements after cutting is completed;
s7, repeating the step S4, and centering the sealing cover assembly and the air guide sleeve 2 again;
s8, welding and fixing the sealing cover cylinder body 10, the air guide sleeve 2 and the ship body;
s9, all butt welding seams are welded according to the process sequence;
s10, the sealing cover blade 8 is assembled back, a half spacer bush is installed, and the half spacer bush is locked by screws.
The method for installing the side pushing sealing cover enables the side pushing sealing cover to be completely attached to the ship body, can reduce the ship body bubbles and underwater radiation noise generated by the side pushing 9 air guide cover, further improves the working accuracy of acoustic equipment equipped with the ship, and has smooth appearance and attractive appearance; in addition, by providing the cover outer plate on the cover cylinder 10 and then connecting the cover outer plate and the hull as a whole, the linear smoothness of the hull appearance can be further improved.
As shown in fig. 2 and 3, in step S4, the specific steps are as follows: firstly, aligning rib position rib plates of the sealing cover cylinder body 10 with rib position rib plates of a ship body, and then enabling the upper surface of a calibration process block 6 of the sealing cover cylinder body 10 to be parallel to the horizontal central axis of the air guide sleeve 2 and enabling the distance between the upper surface and the horizontal central axis of the air guide sleeve 2 to be smaller than 3mm, so as to finish the centering of the sealing cover assembly and the air guide sleeve 2; wherein the calibration process blocks 6 are positioned at the front side and the rear side of the capping cylinder 10; by means of the design, the sealing cover assembly and the air guide sleeve 2 can be conveniently and rapidly centered, and the installation efficiency is high.
Illustratively, in step S7, the distance between the cover outer plate and the hull outer plate 1 is made to be smaller than 4mm while the cover assembly and the pod 2 are re-centered, and the rib of the cover cylinder 10 is aligned with the rib of the hull, so that the cover assembly is aligned with the pod 2, the cover outer plate is attached to the hull outer plate 1, and the linear smoothness of the hull appearance is ensured.
Illustratively, in step S9, the specific steps are as follows: 9.1, firstly welding the circumferential weld between the sealing cover cylinder body 10 and the air guide sleeve 2, and dividing the circumferential weld into a plurality of sections, preferably 8 sections, when the circumferential weld is welded, welding the same welding leg in a diagonal jump mode; 9.2, welding the butt joint rib plate of the ship body and the butt joint rib plate of the lower part of the sealing cover cylinder body 10 again, wherein when welding the welding seams, the welding sequence can be determined according to a specific structure, and the butt joint welding seams at the boundary of the peripheral liquid tanks are required to be processed according to the watertight bulkhead; 9.3, welding butt welding seams of the outer plate of the ship body and the outer plate of the sealing cover again; 9.4, welding the butt welding seam between the upper part of the sealing cover cylinder body 10 and the ship body, and also needing to pay attention to the control of welding deformation in the welding process.
Illustratively, in step S10, when the paint on the surface of the capping blade 8 is locally damaged during the refitting process, repairing the damaged position; therefore, the paint of the ship body is kept complete, and the appearance is attractive.
Illustratively, in step S2, the closure assembly is transported using a lifting apparatus for ease of transportation.
In the description of the present invention, it should be understood that the terms "mounted," "connected," and "connected" are to be construed broadly in this application, and may be either fixedly connected, detachably connected, or integrally connected, for example, unless otherwise explicitly stated and defined; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (6)
1. The installation method of the ship side pushing sealing cover is characterized by comprising the following steps of:
s1, welding a side pushing sealing cover device, a ship body outer plate and a side pushing sealing cover cylinder body to form a sealing cover assembly;
s2, respectively transporting the two sealing cover assemblies to the positions of the port and starboard close to the guide cover, and checking whether the protection of the rotating shaft of the sealing cover blade is complete and reliable;
s3, dismantling a bracket used in the transportation process, respectively hanging the left side cover assembly and the right side cover assembly into a cabin-entering tool, respectively pushing the left side cover assembly and the right side cover assembly into a cabin, and temporarily supporting and hanging the left side cover assembly and the right side cover assembly;
s4, moving the left side cover assembly and the right side cover assembly to align with the air guide sleeve;
s5, taking 2n continuous rib positions of a ship body as measurement positions, taking 2n measurement points A at corresponding positions on a left ship body outer plate, taking 2n measurement points B at corresponding positions on a right ship body outer plate, respectively measuring distances d1 between n groups of left cover outer plates and the measurement points A, distances d2 between n groups of right cover outer plates and the measurement points B, and marking cutting points A1 and B1 at corresponding positions of measured points A, B on side pushing cover cylinder bodies positioned on the left side and the right side along the ship midship direction, wherein the distances between the cutting points A1 and B1 and the tail ends of guide covers are reserved cutting amounts;
s6, cutting the cutting points A1 and B1, and chamfering the butt-joint girth weld of the guide sleeve according to actual welding requirements after cutting is completed;
s7, repeating the step S4, and centering the sealing cover assembly and the air guide sleeve again;
s8, welding and fixing the sealing cover cylinder body, the guide cover and the ship body;
s9, all butt welding seams are welded according to the process sequence; the method comprises the following specific steps:
9.1, firstly welding circumferential welds of the sealing cover cylinder body and the guide cover; 9.2, welding the butt joint rib plate of the ship body and the butt joint rib plate of the lower part of the sealing cover cylinder body again, and processing the butt joint weld at the boundary of the peripheral liquid tank according to the watertight bulkhead; 9.3, welding butt welding seams of the outer plate of the ship body and the outer plate of the sealing cover again; 9.4, welding butt welding seams between the upper part of the sealing cover cylinder body and the ship body;
s10, the cover blade is assembled, the half spacer bush is installed, and the cover blade is locked by screws.
2. The method of installing a side push closure of a marine vessel according to claim 1, wherein in step S4, the specific steps are as follows:
aligning rib position rib plates of the sealing cover cylinder with rib position rib plates of the ship body, enabling the upper surface of a calibration process block of the sealing cover cylinder to be parallel to the horizontal middle shaft surface of the air guide sleeve and enabling the distance between the upper surface of the calibration process block and the horizontal middle shaft surface of the air guide sleeve to be smaller than 3mm, and completing centering of the sealing cover assembly and the air guide sleeve; wherein, the calibration process block is positioned at the front side and the rear side of the sealing cover cylinder body.
3. The method of installing a side-push cover for a ship according to claim 1, wherein in step S7, the distance between the cover outer plate and the hull outer plate is made smaller than 4mm while the cover assembly and the pod are re-centered, and the rib-position rib plate of the cover cylinder is aligned with the rib-position rib plate of the hull.
4. A method of installing a side thrust cover for a vessel as claimed in claim 3, wherein in step S9.1, the girth weld is welded by dividing the girth weld circumferentially into a plurality of segments and welding the legs in the same pass in a diagonal jump manner.
5. The method of installing a side push cover of a ship according to claim 1, wherein in step S10, when paint on the surface of the cover blade is locally damaged during the refitting process, the damaged position is repaired.
6. Method for installing a side-push closure for a vessel according to any of the claims 1-5, characterized in that in step S2 the closure assembly is transported using a lifting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111279852.5A CN113859474B (en) | 2021-10-29 | 2021-10-29 | Installation method of ship side pushing sealing cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111279852.5A CN113859474B (en) | 2021-10-29 | 2021-10-29 | Installation method of ship side pushing sealing cover |
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| Publication Number | Publication Date |
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| CN113859474A CN113859474A (en) | 2021-12-31 |
| CN113859474B true CN113859474B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111279852.5A Active CN113859474B (en) | 2021-10-29 | 2021-10-29 | Installation method of ship side pushing sealing cover |
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| CN114750895A (en) * | 2022-04-02 | 2022-07-15 | 广船国际有限公司 | Positioning and mounting method for side-push and side-push sealing cover |
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| KR20130000144A (en) * | 2011-06-22 | 2013-01-02 | 삼성중공업 주식회사 | Opening and closing apparatus of thruster tunnel and ship having the same |
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| JP2015147532A (en) * | 2014-02-07 | 2015-08-20 | 三菱重工業株式会社 | Thruster of craft and cover device for thruster tunnel |
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| CN109094715A (en) * | 2018-08-02 | 2018-12-28 | 中国船舶工业集团公司第七0八研究所 | It is a kind of to push away capping with the completely the same Anti-bubble groove-type side of ship hull surface line style |
| CN109292036A (en) * | 2018-11-05 | 2019-02-01 | 南京恒兴达机电设备制造有限公司 | A kind of externally swing shipping lateral thruster capping assembly |
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2021
- 2021-10-29 CN CN202111279852.5A patent/CN113859474B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09226690A (en) * | 1996-02-23 | 1997-09-02 | Mitsubishi Heavy Ind Ltd | Side thruster tunnel cover for ship |
| JP2004026018A (en) * | 2002-06-26 | 2004-01-29 | Kawakami:Kk | Side thruster for marine vessel |
| KR20130000144A (en) * | 2011-06-22 | 2013-01-02 | 삼성중공업 주식회사 | Opening and closing apparatus of thruster tunnel and ship having the same |
| JP2015147532A (en) * | 2014-02-07 | 2015-08-20 | 三菱重工業株式会社 | Thruster of craft and cover device for thruster tunnel |
| CN103803018A (en) * | 2014-02-28 | 2014-05-21 | 武昌船舶重工有限责任公司 | Assembling and welding method of side thrust device |
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| CN206327529U (en) * | 2016-12-28 | 2017-07-14 | 上海富勋实业有限公司 | A kind of ship side that can be dismantled under water pushes away capping assembly |
| CN109094715A (en) * | 2018-08-02 | 2018-12-28 | 中国船舶工业集团公司第七0八研究所 | It is a kind of to push away capping with the completely the same Anti-bubble groove-type side of ship hull surface line style |
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| Publication number | Publication date |
|---|---|
| CN113859474A (en) | 2021-12-31 |
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