CN108773455A - Bulb bow reform technology - Google Patents
Bulb bow reform technology Download PDFInfo
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- CN108773455A CN108773455A CN201810574606.4A CN201810574606A CN108773455A CN 108773455 A CN108773455 A CN 108773455A CN 201810574606 A CN201810574606 A CN 201810574606A CN 108773455 A CN108773455 A CN 108773455A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
- B63B1/06—Shape of fore part
- B63B1/063—Bulbous bows
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/40—Other means for varying the inherent hydrodynamic characteristics of hulls by diminishing wave resistance
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Ship Loading And Unloading (AREA)
Abstract
The present invention provides a kind of bulb bow reform technology, it is removed including the manufacture of new bulb bow, old bulb bow and new bulb bow lifts three big processes, former center line of boat, rib bit line and horizontal check line are marked on former outboard plate when new bulb bow is lifted, and mark the projection line of former center line of boat, rib bit line in dock bottom, in conjunction with crane barge, large-scale split fix tooling and split fix trolley on the basis of above-mentioned center line, rib bit line and horizontal check line and its projection line, lateral, longitudinal direction and short transverse precise positioning is carried out to new bulb bow.The present invention can adequately utilize existing equipment, shortening depressed place phase, operation accurate quick.
Description
Technical field
The invention belongs to shipbuilding technical fields, more particularly to a kind of bulb bow reform technology.
Background technology
Bulb bow is that the foremost part of ship water surface is below in spherical protrusion, bulb bow size and shape and hull and boat
Speed can make the waveform ripples overturning 180 degree that ship side generates when matching, offset resistance of the wave to ship, reduce ship's navigation
In wave making resistance；Otherwise the resistance of bigger can be brought to the navigation of ship instead.
In " gold period " of shipping market, a large amount of ship is designed and is built with high speed Operational requirements,
The speed of a ship or plane can generally reach 25 sections or so.But in recent years, under the influence of global economy generally slows down the quagmire of growth, shipping
Market is also once sluggish.To pursue benefit, shipping enterprise generally starts to pursue " economical speed ", the speed of a ship or plane is controlled 15
Section left and right, to reduce energy consumption.In this context, to avoid bulb bow that ship is hindered to advance under the low speed of a ship or plane, and its performance is made to push away
Into effect, needs to redesign bulb bow and replaced, cut operating costs.
The bulb bow refitting engineer of large ship is huge, generally requires and cuts off former ship bulb bow, then installs one again
The new bulb bow block of optimization design.Ship, bulb bow build are huge, and there may be injury of primaries during cutting off, installing
It situations such as ship, new bulb bow close up inaccuracy with former ship needs largely to repair and adjust work, leads to inefficiency.And by
In the shape, of different sizes of every ship, general method of modifying needs weight when carrying out different ship bulb bows repackings
New design refiting scheme, versatility is poor, of high cost.
Invention content
Based on this, the object of the present invention is to provide a kind of bulb bow reform technology, using the technique by old bulb bow more
It is changed to the new bulb bow of re-optimization design, the ship resistance of ship under the low speed can be reduced, ship oil consumption is reduced, reduces boat
Cost is transported, while the reform technology of the present invention can realize the accurate positionin of new bulb bow and former ship, avoids subsequently repairing and adjusting
Whole work significantly reduces the bulb bow replacement cycle, and reduction accounts for the depressed place time, thus additional income, and the bulb bow of the present invention
Reform technology is suitable for the ship of various different shapes and sizes, has good versatility.
The bulb bow reform technology of the present invention includes the following steps：
S1:New bulb bow manufacture：Segmentation division is carried out according to drawing, then carry out being segmented prefabricated and marks inspection line, is connect
It and fixes the new bulb bow of segment folding total composition and mounting bracket；
S2:Old bulb bow is removed：It is right after dockage first to old bulb bow part aggregate pre-demolition before dockage
Old bulb bow is crossed, and is laid with the fixture guiding rail for shifting tooling walking on the ground, is indulged the position of bone in old bulb bow and is set
Installation support, described support one end support old bulb bow, the other end to be welded on displacement fixture cross beam, remove old bulb bow and close up
Component near mouthful transports old bulb bow using displacement tooling；
S3:New bulb bow lifting：Former center line of boat, rib bit line and horizontal check line are marked on former outboard plate, and in depressed place
The projection line of former center line of boat, rib bit line is marked at bottom, and on the basis of the projection line of former center line of boat, adjusting new bulb bow keeps it vertical
On the same line to center line and former center line of boat, on the basis of former ship horizontal check line, adjusting new bulb bow keeps it corresponding
Horizontal check line on the same line, on the basis of former ship rib bit line, adjusting new bulb bow keeps its corresponding rib bit line parallel,
New bulb bow block is lifted up into depressed place with crane barge, is drawn and is moved on to by the large-scale segment shift tooling for additionally arranging in advance in dock bottom
Position, on the basis of the former center line of boat, rib bit line and horizontal check line and its projection line, with a set of segmentation positioning trolley to it
Small-scale movement is carried out, new bulb bow block is accurately positioned, is finally welded to closing up mouth.
Compared with the existing technology, the present invention is when carrying out new bulb bow manufacture, using the method for sectional construction, by new ball nose
Bow be divided into mutually agree with four segmentations carry out respectively it is prefabricated after closed up again, can adequately be built using existing equipment and reducing
Make the time.In the dismounting of old bulb bow, pre-demolition is carried out to old bulb bow before dockage, reduces work of the ship in depressed place
It measures, shortens the depressed place phase.And new bulb bow manufactures and the dismounting of old bulb bow can be carried out at the same time, when further reducing bulb bow replacement
Between, shorten the depressed place phase.Lifted up into new bulb bow in depressed place using crane barge when new bulb bow lifting, uses large-scale segment shift tooling
Coarse localization is carried out to new bulb bow, in conjunction with split fix trolley in lateral, longitudinal and vertical three directions to new bulb bow
It carries out three-dimensional to be accurately positioned, realizes that new bulb bow closes up with the accurate of former ship, it is easy to operate quick.
Further, it includes segmentation center line, reference line for frame and horizontal check line that line is examined described in step S1.
Further, total group is closed up described in step S1 to carry out in order from bottom to top, and using positioning tool and entirely
Instrument of standing adjusts the longitudinal centre line of all segmentations in same straight line and vertical guide, all segment folding mouths position adjacent rib position
Spacing is 800mm.
Further, the laying method of fixture guiding rail described in step S2 is that after dockage, it is horizontal to mark former ship in dock bottom
To the projection line for closing up mouth, and on the basis of the projection line, the track centerline for being parallel to the projection line is marked to stem direction,
Tooling rail set is finally laid on track centerline.
Further, the component near mouth that closes up removed described in step S2 is the structure laterally closed up within the scope of mouthful 200mm
Part.
Description of the drawings
Fig. 1 is the division schematic diagram of new bulb bow sectional；
Fig. 2 is new bulb bow inspection of block line schematic diagram；
Fig. 3 is new bulb bow bracket scheme of installation；
Fig. 4 is that fixture guiding rail is laid with schematic diagram；
Fig. 5 is new bulb bow lifting schematic diagram.
Specific implementation mode
The present invention in ship into before factory, according to drawing in the good new bulb bow block of shop-fabricated.Ship is into after factory, by figure
Paper requires to cut off old bulb bow relevant position in depressed place, and cut-out is removed.Finally with crane barge by new bulb bow
Block is lifted up into depressed place, is drawn by the large-scale segment shift tooling for additionally arranging in advance in dock bottom and moves on to position, is positioned with a set of segmentation
Trolley carries out small-scale movement to it, is accurately positioned to new bulb bow block.Old bulb bow is changed to re-optimization
The structure designed can reduce the ship resistance of ship under the low speed, reduce ship oil consumption, reduce navigation cost, while this
The reform technology of invention can significantly reduce the bulb bow replacement cycle, and reduction accounts for the depressed place time, to additional income.And this hair
Bright bulb bow reform technology is suitable for the ship of various different shapes and sizes, has good versatility.
Carry out the bulb bow reform technology that the present invention will be described in detail in for remote Ningbo wheel and in conjunction with attached drawing below.
The repacking that remote Ningbo is taken turns in the present embodiment is ranging from：Longitudinal FR157-100∽ stems, short transverse are hull bottom ∽
15374A/B, length size are about 21.5m × 6.8m × 14.9m.Reequip construction weight about 208t.The present embodiment is remote by
The bulb bow of Ningbo wheel repacks the new bulb bow that a redesign optimized into, and new bulb bow coordinates with former ship, can be in low boat
The wave making resistance of the lower reduction ship of speed, saves ship energy consumption, reduces navigation cost.
Reform technology includes the new bulb bow manufactures of S1, the old bulb bows of S2 are removed and the new bulb bows of S3 lift three big steps,
The middle new bulb bow manufactures of S1 are removed two steps with the old bulb bows of S2 and synchronous can be carried out.The specific of each step is introduced in detail below
Operation.
S1：New bulb bow manufacture
Segmentation division is carried out according to drawing, then carry out being segmented prefabricated and marks inspection line, then by total group of segment folding
At new bulb bow.Specifically, referring to Fig.1 and 2, wherein Fig. 1 is the division schematic diagram of new bulb bow sectional, Fig. 2 is new ball
Nose bow inspection of block line schematic diagram.The lifting parameter and build the side factor for considering 45T gantry cranes and 100T gantry cranes, by new ball
Nose bow is divided into tetra- segmentations of B01, B02, B03 and B04, and the position of the segmentation mouth of wherein B01 segmentations is FR167-150∽FR175-100, which is 7400 × 2370 × 5159mm, net weight about 24.4t；The segmentation mouth position of B02 segmentations is FR157-1000
∽FR175-100, it is located at the top of bulb bow, which is 14400 × 7149 × 8151mm, net weight about 85.5t；B03 is segmented
Segmentation mouth position be FR157-1000∽FR175-100, be located at bulb bow bottom, the fragment size be 14400 × 5153 ×
6379mm, net weight about 56.6t；The segmentation mouth position of B04 segmentations is FR175-100∽ stems, the fragment size are 5741 × 2727
× 7204mm, net weight about 42.2t.
Then prefabricated segmentation is carried out respectively, i.e., cross according to segmentation mouth position on moulding bed and web frame, outside plate are installed
Etc. structures, aggregate stays 500mm not weld temporarily close to closing up Kou Chu when prefabricated, and B01 segmentations are just being made using NO.4STR as basal plane, BO2
Sectional making vacation platform is that basal plane is just made, and B03 sectional making vacation platforms, which are that basal plane is counter, to be made, and BO4 is segmented using FR175 frames as basal plane
It is vertical to make.After the completion of waiting for that all segmentations are prefabricated, segmentation center line 11, FR157 rib cages are marked on each subsection using total powerstation
Line 12, FR166 reference line for frame 13, FR167 reference line for frame 14, FR174 reference line for frame 15, FR175 rib cages is examined to examine
Line 16, NO.3STR (12422A/B) horizontal checks line 17 and NO.6STR (4610A/B) horizontal checks line 18.Above-mentioned rib cage is drawn
After examining line and horizontal check line, on above-mentioned each inspection line stamps ocean and rush a little, stick on a piece of adhesive tape.
It is laid with the chock higher than 300mm on the ground, B03 segmentations combine turning over 100T gantry cranes using 45T gantry cranes
Then B03 segmentations are hung onto on chock using 100T gantry cranes, and keep BO3 segmentation center lines 11 and gantry crane rail basic by body
It is parallel, then on the basis of NO.6STR (4610A/B) horizontal checks line 18, quadrangle is segmented to level using jack adjustment BO3
Position, then suitably fixed, prevent movement during segment folding.It is examined according to the BO3 segmentation center lines being segmented and rib cage
Test line ground mark corresponding center line projection line, FR157 rib cages projection examine line, FR166 rib cages projection examine line,
The projection of FR167 rib cages examines line, the projection of FR174 rib cages that line, the projection of FR175 rib cages is examined to examine line, and in center line projection line
Upper and its both sides symmetrically longitudinally carry out cloth pier.
B02 segmentations are hung onto using 100T gantry cranes and are closed up in B03 segmentations；Then 45T gantry cranes and 100T are used
It hangs and B04 segmentations hung onto B04 segmentations on chock using 100T gantry cranes after joint turn, make BO4 using 50T jack
Segmentation is closed up with B03 segmentations；Finally B01 segmentations are hung onto using 45T gantry cranes and carry out whole close up in B02 segmentations.?
When carrying out the positioning of BO2, B01 and BO4 segment folding, on the basis of transverse direction is segmented center line by B03, positioning tool and whole station are used
Instrument adjusts the longitudinal centre line of all segmentations in same straight line and vertical guide；In longitudinal direction using respective rib bit trial line as base
Standard, the spacing that segment folding mouth position adjacent rib position is adjusted using positioning tool and total powerstation are 800mm；In short transverse
On the basis of NO.3STR (12422A/B) horizontal checks line 17 and NO.6STR (4610A/B) horizontal check line, positioning tool is used
And total powerstation adjustment segmentation quadrangle levelness and height meets drawing requirement.After the completion of block closes up, segmentation precision measurement is carried out, is surveyed
It is welded after amount data qualifier.After four segment folding welding, each center line that is segmented is connected with each other, and forms the vertical of new bulb bow
To center line.
Fig. 3 is please referred to, after the completion of welding, 3 groups of brackets 21 are symmetrically arranged in FR161, FR167, FR174 frame position,
1 temporary support 22 is set in the positions FR181 simultaneously, which includes that a plumb post and one connect with the plumb post
The batter post connect.
S2：Old bulb bow is removed
Before dockage, using tear open one stay one by the way of, close up the part aggregate of mouthful position in the old bulb bow of Wharf demolition.
After dockage, FR156 ribs bit line and NO.2STR (15026A/B) horizontal check line are got on former outboard plate.
Fig. 4 is please referred to, marks the projection line 30 that former ship laterally closes up mouth in dock bottom, and on the basis of the projection line, Xiang Chuan
Three track centerlines for being parallel to the projection line 31,32,33 are marked in bow direction, and tooling rail is finally laid on track centerline
Road device does the fixture guiding rail of growth 40m, and the setting displacement tooling on the fixture guiding rail, and the displacement tooling can edge
Fixture guiding rail walking.Simultaneously 2 10t hoist engines and 2 sets of 10t gin block groups are placed in dock bottom.
Displacement tooling is placed under old bulb bow, the position of bone is indulged in old bulb bow FR161, FR167, FR174 and sets installation directly
Connect the diagonal brace being welded on displacement fixture cross beam.
After the completion of waiting for the above operation, the component that old bulb bow laterally closes up within the scope of mouth or less 200mm is removed, old ball nose is made
Bow is occupied stably in displacement tooling, laterally pulls shifting displacement tooling later, old bulb bow is transported.
S3：New bulb bow lifting
The projection line of former center line of boat is got in dock bottom using total powerstation, and the projection line is extended into fore.Then it uses
Total powerstation gets FR156 ribs bit line and NO.6STR (4610A/B) horizontal check line on former outboard plate, then is got in dock bottom
The projection line of FR156 rib bit lines marks the projection line of FR161/167/174 rib bit lines then according to the projection line in dock bottom.
After the completion of scribing line, Fig. 5 is please referred to, new bulb bow, which is moved forward to ingate, using crane barge hangs interorbital, and by new ball
The rotation of nose bow makes installation condition in the matching depressed place of its direction, is then hoisted in displacement tooling.The mobile tooling that shifts is by new ball
Nose bow is moved to former ship and closes up near mouth, then places 4 split fix trolleies below displacement tooling.It is small to adjust split fix
Vehicle jacks up new bulb bow and displacement tooling, and new bulb bow is slowly moved to former ship and closes up Kou Chu.With the dock bottom centers Yuan Chuan
On the basis of the projection line of line, adjusting the height of split fix trolley and position makes the longitudinal centre line of new bulb bow and former ship center
Line is on the same line.On the basis of former ship NO.6STR (4610A/B) horizontal check line, the height of split fix trolley is adjusted
Make NO.6STR (4610A/B) the horizontal check lines of new bulb bow and former ship NO.6STR (4610A/B) horizontal check line with position
On the same line.Again on the basis of the projection line of former ship FR167 rib bit lines, the position of adjustment split fix trolley makes new ball nose
The FR157 ribs bit line of bow is parallel with former ship FR156 rib bit lines and spacing is 800mm.It, will be new after above-mentioned exact localization operation
The mouth that closes up of bulb bow and former ship is welded.
Compared with the existing technology, the present invention, using the method for sectional construction, considers when carrying out new bulb bow manufacture
The lifting parameter and build the side factor of gantry crane, new bulb bow is divided into mutually agree with four segmentations carry out respectively it is prefabricated after again
Closed up, can adequately utilize existing equipment and reduces construction-time.In the dismounting of old bulb bow, in harbour to old bulb bow
Pre-demolition is carried out, workload of the ship in depressed place is reduced, shortens the depressed place phase.And remove can be with for new bulb bow manufacture and old bulb bow
It is carried out at the same time, further reduces bulb bow replacing construction, shorten the depressed place phase.It carries out using crane barge by new ball nose when new bulb bow lifting
Bow is lifted up into depressed place, coarse localization is carried out to new bulb bow using large-scale segment shift tooling, in conjunction with split fix trolley in cross
Three-dimensional is carried out to new bulb bow to be accurately positioned, realize accurately closing up for new bulb bow and former ship to, longitudinal and vertical three directions,
It is easy to operate quick.Utilize the bulb bow reform technology of the present invention, it is contemplated that 2 years or so the balls that can complete 20 container ships
Nose bow refitting engineer, about 3,000,000 yuan of every output value, about 60,000,000 yuan of the gross output value.Therefore, bulb bow reform technology of the invention tool
There is huge economic benefit.
Embodiment described above describe it is more specific and detailed, but can not therefore and be interpreted as to patent of invention range
Limitation.It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the premise, also
Several modifications and improvements can be made, these are all within the scope of protection of the present invention.
Claims (6)
1. a kind of bulb bow reform technology, which is characterized in that include the following steps：S1:New bulb bow manufacture：It is carried out according to drawing
Segmentation divides, and then carries out being segmented prefabricated and marks inspection line, then by the new bulb bow of segment folding total composition and mounting bracket
It is fixed；S2:Old bulb bow is removed：First to old bulb bow part aggregate pre-demolition before dockage, after dockage, in old ball
Nose bow indulges the position of bone and sets installation support, and described support one end supports old bulb bow, the other end to be welded on displacement fixture cross beam, then
It removes old bulb bow and closes up component near mouth, old bulb bow is transported using displacement tooling；S3:New bulb bow lifting：In former ship
Former center line of boat, rib bit line and horizontal check line are marked on outside plate, and mark the projection of former center line of boat, rib bit line in dock bottom
Line is lifted up into new bulb bow block in depressed place with crane barge, and shifting is drawn by the large-scale segment shift tooling for additionally arranging in advance in dock bottom
In place, on the basis of the former center line of boat, rib bit line and horizontal check line and its projection line, with a set of segmentation positioning trolley pair
It carries out small-scale movement, is accurately positioned to new bulb bow block, is finally welded to closing up mouth.
2. bulb bow reform technology according to claim 1, it is characterised in that：It includes in segmentation that line is examined described in step S1
Heart line, reference line for frame and horizontal check line.
3. bulb bow reform technology according to claim 2, it is characterised in that：Close up described in step S1 total group from bottom to
Top carries out in order, and adjusts the longitudinal centre line of all segmentations in same straight line and vertical using positioning tool and total powerstation
In face, the spacing of all segment folding mouths position adjacent rib position is 800mm.
4. bulb bow reform technology according to claim 3, it is characterised in that：Tooling is shifted described in step S2 is mounted on work
It fills on guide rail, the laying method of the fixture guiding rail is, after dockage, the projection that former ship laterally closes up mouth is marked in dock bottom
Line, and on the basis of the projection line, the track centerline for being parallel to the projection line is marked to stem direction, finally in orbit centre
Tooling rail set is laid on line.
5. bulb bow reform technology according to claim 4, it is characterised in that：That is removed described in step S2 closes up near mouth
Component be laterally to close up component within the scope of mouthful 200mm.
6. bulb bow reform technology according to claim 5, it is characterised in that：Accurate positioning method is described in step S3,
On the basis of the projection line of former center line of boat, adjustment split fix trolley makes the longitudinal centre line of new bulb bow and former center line of boat
On the same line；On the basis of former ship horizontal check line, adjustment split fix trolley makes the horizontal check line of new bulb bow exist
On same straight line, on the basis of former ship rib bit line, adjustment split fix trolley keeps the corresponding rib bit line of new bulb bow parallel.
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| CN201810574606.4A CN108773455B (en) | 2018-06-06 | 2018-06-06 | Bulb bow reform technology |
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| CN201810574606.4A CN108773455B (en) | 2018-06-06 | 2018-06-06 | Bulb bow reform technology |
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| CN110053991A (en) * | 2019-03-14 | 2019-07-26 | 上海江南长兴造船有限责任公司 | A kind of transfer of support method of turn of the bilge segmentation in ship repair process |
| CN110466675A (en) * | 2019-08-22 | 2019-11-19 | 中船黄埔文冲船舶有限公司 | A kind of bulb bow mounting platform and application method |
| CN110466675B (en) * | 2019-08-22 | 2021-08-20 | 中船黄埔文冲船舶有限公司 | Bulbous bow mounting platform and using method |
| CN110877705A (en) * | 2019-11-19 | 2020-03-13 | 沪东中华造船(集团)有限公司 | Method for repairing large container bilge ballast tank structure |
| CN110877705B (en) * | 2019-11-19 | 2022-06-10 | 沪东中华造船(集团)有限公司 | Method for repairing ballast tank structure of bilge part of large container ship |
| CN114179998A (en) * | 2021-11-08 | 2022-03-15 | 上海江南长兴造船有限责任公司 | Manufacturing method of stem on large container ship and integral stem segment |
| CN114179998B (en) * | 2021-11-08 | 2023-11-17 | 上海江南长兴造船有限责任公司 | Manufacturing method of stem on large container ship and integral stem segmentation |
| CN114291226A (en) * | 2021-12-20 | 2022-04-08 | 上海中远船务工程有限公司 | Sliding carrying device in irregular curved surface structure segmentation dock |
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Effective date of registration: 20191225 Address after: 511462 building 6, No. 2, No. 10, QIHANG Road, Nansha District, Guangzhou City, Guangdong Province (production management building and auxiliary building of electromechanical comprehensive workshop) (office only) Patentee after: Guangzhou Wenchong Shipbuilding Co., Ltd Address before: 511462 No. 10, sailing Road, Nansha District, Guangdong, China, No. 1, 4 (office building), written by myself, Guangzhou Patentee before: The boat in Guangzhou Wenchong Dock Company Limited |
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