CN106564565A - Rudder-propeller tooling car and rudder-propeller installation process - Google Patents
Rudder-propeller tooling car and rudder-propeller installation process Download PDFInfo
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- CN106564565A CN106564565A CN201610948279.5A CN201610948279A CN106564565A CN 106564565 A CN106564565 A CN 106564565A CN 201610948279 A CN201610948279 A CN 201610948279A CN 106564565 A CN106564565 A CN 106564565A
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- rudder
- propeller
- blade
- locomotive
- oar
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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
- B63B71/00—Designing vessels; Predicting their performance
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a rudder-propeller tooling car which comprises a mobile car body, a propeller installation frame and a rudder blade installation frame. The propeller installation frame and the rudder blade installation frame are detachably installed on the mobile car body, the bottom face of the mobile car body is provided with a wheel set, and the side face is provided with a winding engine; the propeller installation frame comprises a supporting platform, an operation platform, a jacking assembly and a propeller supporting bracket. The jacking assembly comprises a jacking bracket, at least two sets of lead screws and nuts matched with the lead screws, the jacking bracket is fixed between the supporting platform and the operation platform, and one end of each lead screw penetrates through a hole of the operation platform to be connected with the propeller supporting bracket; the rudder blade installation frame comprises at least two layers of racks, and each layer of rack is provided with a cavity for storing a rudder blade. The invention discloses a rudder-propeller installation process, the mobile car body moves back and forth on a track through the winding engine, the height position of the rudder blade is adjusted through the lead screws, and installation is conducted by determining the installation position of a propeller blade or the rudder blade. The rudder-propeller tooling car is easy to manufacture, time and labor are saved, energy consumption is lowered, and worker safety can be guaranteed.
Description
Technical field
The present invention relates to ship mounting technique field, more particularly to a kind of rudder oar fixture vehicle and rudder oar mounting process.
Background technology
Rudder blade is the body for producing rudder action power, is made by timber or steel, and majority is welded into hollow airfoil type.
Propeller is referred to and is rotated in air or water by blade, engine rotation power is converted into the device of propulsive force, can have two
Or more leaf is connected with hub, the one side backward of leaf is helicoid or a kind of ship's propeller for being similar to helicoid.Rudder blade and
Propeller is typically located at stern, is that irradiation determines shafting, rudder blade centrage, then installs rudder blade after ship main hull molding
And propeller.And at this moment as outside plate is not yet painted, still suffer from substantial amounts of foot handss on the quarter so that workman's free space
Seldom.Workman install rudder blade and during propeller need to using instruments such as chain blocks and through repeatedly tear open, take could by rudder blade or
Propeller slowly moves to relevant position, and consuming man-hour is more and scaffold safety after secondary repacking is substantially reduced.
As shown in Figure 5, Figure 6, at present the big-and-middle-sized shipyard of country's outer portion to have developed electronic or hydraulic-driven frock little
Car, and applied to Ship Building and Repairing process.But more than 100,000 tons in broadside slip or dock of ship is only applicable to mostly,
And motor or hydraulic-driven trolley idler wheels are selected, system complex is caused, the problems such as accessory safeguards loaded down with trivial details.
The content of the invention
The technical problem to be solved in the present invention is that：For the technical problem that prior art is present, the present invention provides one
Rudder oar fixture vehicle and rudder oar mounting process are planted, makes simple, and time saving and energy saving, reducing energy consumption, and can guarantee that worker safety.
To solve above-mentioned technical problem, technical scheme proposed by the present invention is：
A kind of rudder oar fixture vehicle, including locomotive, propeller installing rack and rudder blade installing rack, the propeller installing rack and
Rudder blade installing rack is removably installed on locomotive；
The locomotive includes sweep, and the sweep bottom surface is provided with wheel group, and the side of the sweep is provided with hoist engine；
The propeller installing rack includes support platform, operating platform, jacking component and propeller bracket, the jacking group
Part includes lifting-up support, at least two sleeve screw rods and the nut coordinated with screw mandrel, and the lifting-up support is fixed on support platform and behaviour
Make between platform, the screw mandrel is installed on lifting-up support, and one end of the screw mandrel is through hole and the institute of the operating platform
The connection of propeller bracket is stated, the nut sleeve is on screw mandrel, and is installed on the upper end of the operating platform；
The rudder blade installing rack includes at least two-layer stand, and per layer of stand is designed with placing the positioning chamber of rudder blade, institute
State stand and be provided with stair.
As the further improvement of above-mentioned technical proposal：
Each wheel of the wheel group is fixed on the bottom surface of the sweep by a mounting seat, each described wheel
It is designed with snap hook.
The bottom surface of the sweep is provided with fixed pulley, and the mounting seat is provided with collection orderliness, the end of the hoist engine rope
Portion hang on collection orderliness.
The side of the support platform and operating platform is provided with least one cat ladder, and described cat ladder one end is cut with scissors with support platform
Connect, the other end is hinged with operating platform.
The upper surface of the operating platform is provided with guard rail.
The bottom surface of the propeller bracket is fixed with least one jacking seat, and the endoporus of the jacking seat is provided with interior spiral shell
Stricture of vagina, each described screw mandrel are spirally connected with corresponding jacking seat.
A kind of rudder oar mounting process, installs rudder blade or blade using above-mentioned rudder oar fixture vehicle；
Blade is installed, is comprised the following steps：
1) attachment rail on building berth inclined-plane, one end end of the track install limited block, and the installing of other end end is led
Draw eye plate, locomotive is positioned over into one end that track is provided with limited block；
2) two propeller installing rack intervals are installed on locomotive, the support platform is fixed on the sweep,
Blade is hung on two propeller brackets；
3) rope of the hoist engine clasps traction eye plate, starts hoist engine and drives locomotive to be moved under oar shaft end
Side, rotates the height that nut adjusts screw mandrel, raises the blade, adjusts the front and back position of blade and locomotive, determines the oar
The installation site of leaf, is installed；
Rudder blade is installed, is comprised the following steps：
A) attachment rail on building berth inclined-plane, one end end of the track install limited block, and the installing of other end end is led
Draw eye plate, locomotive is positioned over into one end that track is provided with limited block；
B) rudder blade installing rack is installed on locomotive, according to the weight and installation site determining table rack-layer number of rudder blade, will
The stand is fixed on the sweep, and rudder blade is hung to the positioning intracavity of the stand；
C) rope of the hoist engine clasps traction eye plate, start hoist engine drive locomotive be moved to rudder stock lower section or
The side of person's rudder stock, determines the installation site of the rudder blade, is installed.
In above-mentioned rudder oar mounting process preferably, the track is installed on building berth by rail bed, and the track sets
There is two pieces, the symmetrical centre of track is overlapped with hull centrage described in two pieces.
In above-mentioned rudder oar mounting process preferably, the oar axle or rudder stock are located at the high one end of the building berth surface slope,
The locomotive initial position is located at the low one end of building berth surface slope.
In above-mentioned rudder oar mounting process preferably, after the rudder blade or blade are installed, the hoist engine is inverted, it is mobile
Car is snapped down at limited block, tears the shifting locomotive and track open.
Compared with prior art, it is an advantage of the current invention that：
The rudder oar fixture vehicle of the present invention, locomotive are driven using hoist engine-pulley system, and propeller installing rack adopts nut
The mode that machinery top is lifted, it is simple to operate, reduce equipment cost.Hoist engine is arranged on movement by the rudder oar fixture vehicle of the present invention
Edge in facing, it is to avoid impact of the high water level to hoist engine motor after the flood tide of the Changjiang river, while guarantee in the Changjiang river high water level feelings
Rudder oar installation exercise can be also realized under condition.The rudder oar mounting process of the present invention, is driven using hoist engine-pulley system, then profit
The sliding force produced in inclined-plane with object action of gravity, realize rudder, oar along longitudinal building berth smoothly on the quarter with rudder or oar
Position between carry out forward and reverse transmission.Compared with the rudder oar car in traditional dock is using hydraulic-driven, the present invention it is time saving and energy saving,
Reducing energy consumption.
Description of the drawings
Fig. 1 is the structural representation of the locomotive of rudder oar fixture vehicle of the present invention.
Fig. 2 is the structural representation of the propeller installing rack of rudder oar fixture vehicle of the present invention.
Fig. 3 is the structural representation that blade of the present invention installs embodiment.
Fig. 4 is the structural representation that rudder blade of the present invention installs embodiment.
Fig. 5 is the structural representation of locomotive in prior art.
Fig. 6 is the structural representation of propeller installing rack in prior art.
Marginal data：
1st, sweep；11st, mounting seat；12nd, hoist engine；13rd, wheel；14th, collect orderliness；15th, snap hook；16th, fixed pulley；2、
Support platform；3rd, operating platform；31st, cat ladder；32nd, guard rail；4th, jacking component；41st, lifting-up support；411st, support column；412、
Connecting pole；413rd, installing plate；42nd, screw mandrel；43rd, nut；5th, propeller bracket；51st, jacking seat；6th, stand；61st, stair；7th, rudder
Leaf；8th, track；81st, limited block；82nd, draw eye plate；83rd, rail bed；9th, blade.
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
For the ease of description, space relative terms can be used here, such as " ... on ", " ... top ",
" in ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
To be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Fig. 1 to Fig. 4 shows a kind of embodiment of rudder oar fixture vehicle of the present invention, including locomotive, propeller installing rack
With rudder blade installing rack, propeller installing rack and rudder blade installing rack are removably installed on locomotive.
Locomotive includes sweep 1, and 1 bottom surface of sweep is provided with wheel group, and wheel group includes four wheels 13, each wheel 13
The bottom surface of sweep 1 is fixed on by a mounting seat 11, wheel 13 is provided with snap hook 15.Volume is installed above the side of sweep 1
Machine 12 is raised, impact of the high water level to 12 motor of hoist engine after the flood tide of the Changjiang river can be avoided, while guaranteeing in the Changjiang river high water level feelings
Rudder oar installation exercise can be also realized under condition.The bottom surface of sweep 1 is provided with fixed pulley 16, and mounting seat 11 is provided with collection orderliness 14,
When not working, the rope of hoist engine 12 bypasses fixed pulley 16, and the end of rope is latched and collection orderliness 14 is hung on.
Propeller installing rack includes support platform 2, operating platform 3, jacking component 4 and propeller bracket 5.Support platform 2
It is welded by shaped steel.Jacking component 4 includes lifting-up support 41, at least two sleeve screw rods 42 and with screw mandrel 42 coordinate nut 43,
Nut 43 is hydraulic nut.Lifting-up support 41 is made up of two installing plates 413 and multiple support columns 411, is set between support column 411
There is connecting pole 412, support column 411 is fixed between two installing plates 413, and two installing plates 413 are individually fixed in support platform 2
On operating platform 3.Screw mandrel 42 is threadedly coupled with connecting pole 412, and one end of screw mandrel 42 extends to behaviour through the hole of operating platform 3
Make the upper end of platform 3, nut 43 is installed on the upper end of operating platform 3, and is sheathed on the elongated end of screw mandrel 42.Propeller bracket 5
Bottom surface be fixed with least one jacking seat 51, the endoporus of jacking seat 51 is provided with female thread, each screw mandrel 42 and it is corresponding top
Seat up 51 threaded connections.The side of support platform 2 and operating platform 3 is provided with least one cat ladder 31,31 one end of cat ladder and support
Platform 2 is hinged, and the other end is hinged with operating platform 3.The upper surface of operating platform 3 is provided with guard rail 32, it is ensured that the work of workman
Safety.
Rudder blade installing rack includes at least two-layer stand 6, and every layer of stand 6 is designed with placing the positioning chamber of rudder blade 7, and stand 6 sets
There are stair 61.
The rudder oar fixture vehicle of the present invention, is primarily adapted for use in rudder blade, the propeller mounting process of 10 tons longitudinal direction building berth, tool
Have easy to operate, it is practical, the advantages of Financial cost is relatively low.
The rudder oar mounting process of the present invention, is to install rudder blade 7 or blade 9 using above-mentioned rudder oar fixture vehicle, below enters
Row is illustrated.
As shown in figure 3, installing blade 9, comprise the following steps：
1) according to locomotive and the weight of blade 9, with reference to parameters such as the coefficient of frictions between locomotive and track 8, calculate
9 upward slope power demand of locomotive and blade, determines the intensity of the power of motor and rope of hoist engine 12；According to 9 He of blade
The size of propeller bracket 5, weight, calculate the top lift needed for jacking blade 9, determine the quantity of screw mandrel 42；
2) attachment rail 8 on building berth inclined-plane, track 8 are provided with two pieces, are installed on building berth by rail bed 83, two pieces
The symmetrical centre of track 8 is overlapped with hull centrage；Oar axle position is should be noted that during installation in the big one end of surface slope, in track 8
Limited block 81 is installed in end positioned at the low one end of surface slope, in the other end end installing traction eye plate 82 of track 8；
3) end of 12 rope of hoist engine is hung on into collection orderliness 14, then locomotive is positioned over into track 8 and be provided with spacing
One end of block 81, wheel 13 are positioned on corresponding track 8；
4) the propeller installing rack for assembling is installed on locomotive, support platform 2 is fixed on sweep 1, is typically needed
Two sets of propeller installing racks are installed, two sets of propeller installing rack arranged for interval, two propeller brackets 5 are positioned opposite, by oar
Leaf 9 is hung on two propeller brackets 5；
5) cable end of hoist engine 12 is clasped into traction eye plate 82, starts hoist engine 12 and drive locomotive to be moved to
Below oar shaft end, rotating hydraulic nut 43 adjusts the height of screw mandrel 42, raises blade 9, by the positive and negative modulation of hoist engine 12
The front and back position of whole blade 9 and locomotive, adjusts the height of screw mandrel 42 by rotating each hydraulic nut 43, determines blade 9
Installation site, then installed；
6), after blade 9 is installed, slow reversion hoist engine 12 is focused under longitudinal building berth inclined-plane generation certainly using locomotive
Sliding power, makes locomotive be snapped down to the tail end of track 8, and sticks the limited block 81 of track 8, unloads 12 cable end of hoist engine lock
And hang over collection eye plate 14；
7) track 8, installation bolt of propeller installing rack etc. are removed, hanging on track 8 and locomotive is caught on by loop wheel machine
Ear, tears shifting locomotive, track 8 and propeller installing rack open.
As shown in figure 4, installing rudder blade 7, comprise the following steps：
A) weight according to rudder blade 7, with reference to parameters such as the coefficient of frictions between locomotive and track 8, calculate locomotive and
7 upward slope power demand of rudder blade, determines the intensity of the power of motor and rope of hoist engine 12；According to the weight and peace of rudder blade 7
Holding position determines the number of plies of stand 6；
B) attachment rail 8 on building berth inclined-plane, track 8 are provided with two pieces, are installed on building berth by rail bed 83, two pieces
The symmetrical centre of track 8 is overlapped with hull centrage；Should be noted that during installation that rudder stock is located at the big one end of surface slope, in track 8
Limited block 81 is installed in end positioned at the low one end of surface slope, in the other end end installing traction eye plate 82 of track 8；
C) end of 12 rope of hoist engine is hung on into collection orderliness 14, then locomotive is positioned over into track 8 and be provided with spacing
One end of block 81, wheel 13 are positioned on corresponding track 8；
D) ground floor stand 6 is fixed on sweep 1, then fixes other stands 6, the positioning chamber of stand 6 is located at movement
Rudder blade 7 is hung to the positioning intracavity of the superiors' stand 6 by car longitudinal center or skew side,；
E) cable end of hoist engine 12 is clasped into traction eye plate 82, starts hoist engine 12 and drive locomotive slowly to move
The one side of lower section to rudder stock or rudder stock is moved, rudder blade 7 is installed to using the cooperation of rudder blade maintenance crane code and chain block
Position.
F), after rudder blade 7 is installed, slow reversion hoist engine 12 is focused under longitudinal building berth inclined-plane generation certainly using locomotive
Sliding power, makes locomotive be snapped down to the tail end of track 8, and sticks the limited block 81 of track 8, unloads 12 cable end of hoist engine lock
And hang over collection eye plate 14；
G) track 8, installation bolt of stand 6 etc. are removed, the hanger on track 8 and locomotive is caught on by loop wheel machine, shifting is torn open
Locomotive, track 8 and stand 6.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention.Although of the invention
It is disclosed above with preferred embodiment, but it is not limited to the present invention.Therefore, it is every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should fall
In the range of technical solution of the present invention protection.
Claims (10)
1. a kind of rudder oar fixture vehicle, it is characterised in that including locomotive, propeller installing rack and rudder blade installing rack, the spiral
Oar installing rack and rudder blade installing rack are removably installed on locomotive；
The locomotive includes sweep (1), and sweep (1) bottom surface is provided with wheel group, and the side of the sweep (1) is provided with volume
Raise machine (12)；
The propeller installing rack includes support platform (2), operating platform (3), jacking component (4) and propeller bracket (5), institute
The nut (43) that jacking component (4) coordinates including lifting-up support (41), at least two sleeve screw rods (42) and with screw mandrel (42) is stated, it is described
Lifting-up support (41) is fixed between support platform (2) and operating platform (3), and the screw mandrel (42) is installed on lifting-up support (41)
On, and one end of the screw mandrel (42) passes through the hole of the operating platform (3) to be connected with the propeller bracket (5), the spiral shell
Female (43) are sheathed on screw mandrel (42), and are installed on the upper end of the operating platform (3)；
The rudder blade installing rack includes at least two-layer stand (6), and per layer of stand (6) is designed with placing the positioning of rudder blade (7)
Chamber, the stand (6) are provided with stair (61).
2. rudder oar fixture vehicle according to claim 1, it is characterised in that each wheel (13) of the wheel group passes through
One mounting seat (11) is fixed on the bottom surface of the sweep (1), and each described wheel (13) is designed with snap hook (15).
3. rudder oar fixture vehicle according to claim 2, it is characterised in that the bottom surface of the sweep (1) is provided with fixed pulley
(16), the mounting seat (11) is provided with collection orderliness (14), and the end of hoist engine (12) rope hang on collection orderliness
(14)。
4. rudder oar fixture vehicle according to claim 1, it is characterised in that the support platform (2) and operating platform (3)
Side is provided with least one cat ladder (31), and described cat ladder (31) one end is hinged with support platform (2), the other end and operating platform
(3) it is hinged.
5. rudder oar fixture vehicle according to claim 4, it is characterised in that the upper surface of the operating platform (3) is provided with anti-
Guardrail (32).
6. rudder oar fixture vehicle according to claim 1, it is characterised in that the bottom surface of the propeller bracket (5) is fixed and set
The endoporus for having at least one jacking seat (51), the jacking seat (51) is provided with female thread, each described screw mandrel (42) with it is corresponding
Jacking seat (51) is spirally connected.
7. a kind of rudder oar mounting process, it is characterised in that usage right requires that the rudder oar fixture vehicle described in 1～6 any one is installed
Rudder blade (7) or blade (9)；
Blade (9) is installed, is comprised the following steps：
1) limited block (81), other end end are installed in attachment rail (8) on building berth inclined-plane, one end end of the track (8)
Locomotive is positioned over one end that track (8) is provided with limited block (81) by installing traction eye plate (82)；
2) two propeller installing rack intervals are installed on locomotive, the support platform (2) is fixed on the sweep (1)
On, blade (9) is hung on two propeller brackets (5)；
3) rope of the hoist engine (12) clasps traction eye plate (82), starts hoist engine (12) and drives locomotive to be moved to oar axle
Below end, the height that nut (43) adjusts screw mandrel (42) is rotated, raise the blade (9), adjustment blade (9) and locomotive
Front and back position, determines the installation site of the blade (9), is installed；
Rudder blade (7) is installed, is comprised the following steps：
A) limited block (81), other end end are installed in attachment rail (8) on building berth inclined-plane, one end end of the track (8)
Locomotive is positioned over one end that track (8) is provided with limited block (81) by installing traction eye plate (82)；
B) rudder blade installing rack is installed on locomotive, stand (6) number of plies is determined according to the weight and installation site of rudder blade (7),
The stand (6) is fixed on the sweep (1), rudder blade (7) is hung to into the positioning intracavity of the stand (6)；
C) rope of the hoist engine (12) clasps traction eye plate (82), starts hoist engine (12) and drives locomotive to be moved to rudder stock
Lower section or rudder stock side, determine the installation site of the rudder blade (7), installed.
8. rudder oar mounting process according to claim 7, it is characterised in that the track (8) is by rail bed (83)
It is installed on building berth, the track (8) is provided with two pieces, and described in two pieces, the symmetrical centre of track (8) is overlapped with hull centrage.
9. rudder oar mounting process according to claim 7, it is characterised in that it is oblique that the oar axle or rudder stock are located at the building berth
The high one end of the face gradient, the locomotive initial position are located at the low one end of building berth surface slope.
10. rudder oar mounting process according to claim 9, it is characterised in that the rudder blade (7) or blade (9) are installed
After complete, the hoist engine (12) is inverted, locomotive is snapped down to limited block (81) place, tear the shifting locomotive and track (8) open.
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| CN201610948279.5A CN106564565A (en) | 2016-10-27 | 2016-10-27 | Rudder-propeller tooling car and rudder-propeller installation process |
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| CN201610948279.5A CN106564565A (en) | 2016-10-27 | 2016-10-27 | Rudder-propeller tooling car and rudder-propeller installation process |
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| CN108298016A (en) * | 2017-12-29 | 2018-07-20 | 南通中远船务工程有限公司 | Crude oil rejects shipowner's propeller bracket sliding lifting installation method |
| CN108298016B (en) * | 2017-12-29 | 2019-07-12 | 南通中远船务工程有限公司 | Crude oil rejects shipowner's propeller bracket sliding lifting installation method |
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| CN109466689B (en) * | 2018-10-09 | 2019-11-08 | 广州黄船海洋工程有限公司 | Integral prefabricated cabin unit is built in one kind into cabin method |
| CN109466689A (en) * | 2018-10-09 | 2019-03-15 | 广州黄船海洋工程有限公司 | Integral prefabricated cabin unit is built in one kind into cabin method |
| CN109178202A (en) * | 2018-10-31 | 2019-01-11 | 广船国际有限公司 | A kind of installation method of propulsion device |
| CN111284648A (en) * | 2018-11-21 | 2020-06-16 | 上海船厂船舶有限公司 | Rudder blade support frame and rudder blade mounting trolley |
| CN111284647A (en) * | 2018-11-21 | 2020-06-16 | 上海船厂船舶有限公司 | Walking trolley for mounting steering oar |
| CN110510058A (en) * | 2019-07-11 | 2019-11-29 | 沪东中华造船(集团)有限公司 | A kind of oblique building berth Becker rudder system bracing wire localization method |
| CN110789683A (en) * | 2019-09-23 | 2020-02-14 | 江苏新时代造船有限公司 | Method for mounting rudder blade of ship propeller |
| CN112693575A (en) * | 2020-12-30 | 2021-04-23 | 泰州福星工业自动化装备有限公司 | Reinforced anti-corrosion ship steel structure |
| CN113059524A (en) * | 2021-03-30 | 2021-07-02 | 江南造船(集团)有限责任公司 | Auxiliary propeller dismounting tool, dismounting method and mounting method |
| CN113059524B (en) * | 2021-03-30 | 2022-07-05 | 江南造船(集团)有限责任公司 | Auxiliary propeller dismounting tool, dismounting method and mounting method |
| CN113601465A (en) * | 2021-07-21 | 2021-11-05 | 上海外高桥造船有限公司 | Installation tool of propeller |
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Application publication date: 20170419 |