CN107042879A - A kind of oblique slipway launching draw-gear and method - Google Patents
A kind of oblique slipway launching draw-gear and method Download PDFInfo
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- CN107042879A CN107042879A CN201611077717.1A CN201611077717A CN107042879A CN 107042879 A CN107042879 A CN 107042879A CN 201611077717 A CN201611077717 A CN 201611077717A CN 107042879 A CN107042879 A CN 107042879A
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- steel cable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C3/00—Launching or hauling-out by landborne slipways; Slipways
- B63C3/10—Launching or hauling-out by landborne slipways; Slipways using releasing devices
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- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
A kind of oblique slipway launching draw-gear, including two arine railways and lower neatly plate, arine railway is provided with trigger, tackle pulley, tackle steel cable, hoist engine and anchor block, lower neatly plate side is provided with the stop block for hooking trigger, tackle pulley is synchronous two groups, assembly pulley front end connects hull, rear end is connected with hoist engine and anchor block, hoist engine is fixedly installed on arine railway rearward end and is located between anchor block and hull, tackle steel cable is arranged on hull, between tackle pulley and hoist engine, realize that tackle pulley is opened or draws in and then realize the traction to hull by hoist engine folding and unfolding tackle steel cable.When the present invention preferably solves oblique building berth series connection many ships of construction, easily deflect, depart from during away from seawater side ship gravity launching the safety problem of slideway, and draw-gear is simple in construction, configuration is installed convenient, factory's existing equipments resources can be made full use of simply to be transformed, above-mentioned safety problem is solved with smaller cost, oblique building berth service efficiency is improved.
Description
Technical field
The invention belongs to shipbuilding technical field, more particularly to a kind of oblique slipway launching draw-gear and method.
Background technology
Ship is in dock, building berth building course, to improve dock, berth utilization ratio sometimes using series connection construction method,
I.e. dock, one in front and one in back two ships series connection of arrangement simultaneously carry out segment carryings on building berth, but this method of construction is used for platybasic type
Dock, it is less to be used for apsacline building berth, because for oblique building berth, when needing lower water after hull shaping, for close to extra large side
Ship can directly use conventional gravity launching method, but the ship for side off sea farther out, such as straight because its slippage is longer
Connect and use gravity launching, ship is easily increased during lower water and is deflected or depart from the probability of slideway accident, especially for
Hull is linear to be changed greatly, and the flat less ship of area, the probability for deflecting or departing from slideway accident is bigger, and for flat
Die bed dock, need to only pour water so that flat float of ship is pulled out, without above-mentioned accident risk.To improve the utilization of oblique building berth
Rate, and avoid ship during oblique slipway launching from deflecting or depart from the risk of slideway accident, this project provides a kind of oblique building berth
Lower water traction method, solves the above problems.
The content of the invention
First technical problem to be solved by this invention is to provide a kind of oblique slipway launching simple in construction, easy to assembly
Draw-gear, to water under the traction of ship.
Second technical problem to be solved by this invention is to provide a kind of oblique slipway launching traction method, is led by above-mentioned
Leading-in device carries out conventional gravity launching again after making the ship-dragging of side off sea farther out to the launching position of safety.
The present invention solve technical scheme that above-mentioned first technical problem used for：A kind of oblique slipway launching traction dress
Put, including two parallel arine railways and the lower neatly plate below hull, it is characterised in that：The arine railway is in
It is low early and high after to be obliquely installed, trigger, the tackle pulley for drawing hull, tackle steel cable, elevator are provided with arine railway
Machine and anchor block, wherein trigger are several, and interval is laid in the front half section of arine railway, and the side of lower neatly plate is provided with use
In the stop block of hooking trigger, tackle pulley is synchronous two groups, is separately positioned on two arine railways, the front end of assembly pulley
Hull is connected, rear end is connected with hoist engine and anchor block, the rearward end that hoist engine is fixedly installed on arine railway is located at anchoring
Between block and hull, tackle steel cable is arranged between hull, tackle pulley and hoist engine, passes through hoist engine folding and unfolding tackle steel cable
Realize opening or drawing in and then realize the traction to hull for tackle pulley.
As an improvement, the tackle steel cable is a whole-root rope, the diameter of tackle steel cable is more than 28mm, tackle steel cable
One end on a hoist engine, the other end enters in a tackle pulley, and stretches into after coming and going some circles of winding in tackle pulley
In guide roller in the middle part of ship head end, through leading back into another tackle pulley on another arine railway, and in another coaster
Come and gone in group after the same number of turns of winding, return to and be wound on another hoist engine.
It is preferred that, the round coiling number of turns of the tackle steel cable in tackle pulley is 5 circles, and arine railway is provided with to coaster
The slideway guide roller that steel wire rope is oriented to.
As an improvement, being to have for checking two tackle pulley synchronous situation in ship folding process on the tackle steel cable
Red cloth bar.
As an improvement, the outside plate both sides of the hull, which are provided with, is used for the pulling force eye plate that assembly pulley is connected with hull, two groups of cunnings
Car group is connected on pulling force eye plate by anchoring steel wire rope and steel shackle respectively, is provided with the middle part of ship hull plate head end for connecting
Two groups of assembly pulleys make it keep synchronous guide roller.
As an improvement, the anchor block is arranged on the rearward end of arine railway, the rear end of tackle pulley passes through anchoring steel wire rope
It is connected with anchor block, two pulling force eye plates that hoist engine is welded by bottom are worn anchoring steel wire rope and are connected with anchor block.
It is preferred that, the diameter of the anchoring steel wire rope is more than 36mm, and anchor block is provided with anchor block pulling force eye plate, anchors steel wire
Connected between rope and anchor block pulling force eye plate, two pulling force eye plates by steel shackle.
Improve again, the hoist engine is fixed on arine railway by code plate weld, anchor block selects two 25~35 tons
Kentledge is served as, and connecting crossbeam by anchor block between two pieces of anchor blocks is welded to connect, and the rear end of anchor block is provided with pendant in ship
It is used for the emergent ballast anchoring iron block for increasing anchor force below platform slideway end portion.
The present invention solve technical scheme that above-mentioned second technical problem used for：A kind of oblique slipway launching traction side
Method, it is characterised in that comprise the following steps：
1) lower water tractive force is first calculated：According to the weight of the various parts of state ship, shipment equipment, ballast before lower water
Amount, building berth skin-friction coefficient, and the empirical data that collection collects when combining water under conventional ship type are calculated after being modified and obtained
Lower water tractive force；
2) above-mentioned lower water draw-gear is arranged, including trigger, the stop block of lower neatly plate side, ship hull plate both sides
Guide roller, slideway guide roller, tackle pulley, tackle steel cable, anchoring steel wire in the middle part of pulling force eye plate, ship hull plate head end
Rope, hoist engine, anchor block, emergent ballast anchor block, anchor block connection crossbeam and the red cloth bar of simultaneous observation；
3) hoist engine on two arine railways carries out folding and unfolding tackle steel cable simultaneously, and tackle pulley is gradually drawn high by drawing in,
Ship is slowly moved down simultaneously, while checking two tackle pulley synchronous situation in ship folding process by red cloth bar, it is ensured that two slide
Car group keeps synchronous；
4) determine to divide according to the length situation of ready tackle steel cable and move down several times, rear trigger is moved down for the first time and is erected
Play hooking to live stop block and remain stationary as hull, drawn in again after tackle pulley removal load, repeat second and draw, until by ship
Untill body moves on to the safe launching position specified.
As an improvement, the position of the stop block is according to the length of tackle steel cable, tackle pulley windings, anchoring
The length computation of steel wire rope is obtained, and each hull is moved down after distance reaches, and the position of stop block is placed exactly in lower section building berth and slided
The position of road trigger, holds up trigger, hooking, which lives stop block, remains stationary as hull.
Compared with prior art, the advantage of the invention is that：The traction method of the present invention preferably solves oblique building berth string
When joint construction makes many ships, the safety problem for the slideway that easily deflects, departs from during away from seawater side ship gravity launching, and this
The draw-gear of invention is simple in construction, installs configuration conveniently, factory's existing equipments resources can be made full use of simply to be transformed, with
Smaller cost solves above-mentioned safety problem, improves oblique building berth service efficiency.
Brief description of the drawings
Fig. 1 is the side view for the draw-gear that the present invention is provided；
Fig. 2 is the partial enlarged drawing of tackle pulley traction arrangement in Fig. 1；
Fig. 3 is the top view of the draw-gear of the present invention；
Fig. 4 is the partial enlarged drawing of tackle pulley traction arrangement in Fig. 3；
Fig. 5 is the side view of traction folding process in the embodiment of the present invention；
Fig. 6 is the top view of traction folding process in the embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
As Figure 1-4, a kind of oblique slipway launching draw-gear, including two parallel arine railways 1 and positioned at ship
The lower neatly plate of the lower section of body 2, arine railway 1 is using slope as 1：18~22 (preferably 1:20) low early and high after is obliquely installed,
Arine railway 1 is provided with trigger 3, the tackle pulley 6 for drawing hull 1, tackle steel cable 7, hoist engine 9 and anchor block 10,
Wherein trigger 3 is several, and interval is laid in the front half section of arine railway 1, and the side of lower neatly plate is provided with to be stopped for hooking
The stop block 4 of sliding device 3, tackle pulley 6 is synchronous two groups, is separately positioned on two arine railways 1, and the front end of assembly pulley 6 connects
Hull 2 is connect, rear end is connected with hoist engine 9 and anchor block 10, and the rearward end that hoist engine 9 is fixedly installed on arine railway 1 is located at
Between anchor block 10 and hull 2, tackle steel cable 7 is arranged between hull 2, tackle pulley 6 and hoist engine 9, is received by hoist engine 9
Put tackle steel cable 7 and realize opening or drawing in and then realize the traction to hull 2 for tackle pulley 6, anchor block 10 is arranged on building berth
The rearward end of slideway 1, the rear end of tackle pulley 6 is connected by anchoring steel wire rope 8 and steel shackle with anchor block 10, and hoist engine 9 leads to
Two pulling force eye plates 92 for crossing bottom welding are worn anchoring steel wire rope 8 and are connected with anchor block 10；The outside plate both sides difference of hull 2
It is used for the pulling force eye plate 21 that assembly pulley 6 is connected with hull 2 provided with two, two groups of assembly pulleys 6 pass through anchoring steel wire rope 8 and steel respectively
Shackle is connected on pulling force eye plate 21, and be provided with the middle part of the outside plate head end of hull 2 makes it keep synchronous for connecting two groups of assembly pulleys 6
Guide roller 22, it is to avoid hull 2 is deflected, and is connected between guide roller 22 and tackle pulley 6 by tackle steel cable 7, coaster
Steel wire rope 7 is a whole-root rope, and the diameter of tackle steel cable 7 is more than 28mm, and one end of tackle steel cable 7 is wound on a hoist engine 9
On, the other end enters in a tackle pulley 6, and stretches into the orienting roll in the middle part of the head end of hull 2 after the round circle of winding 5 in tackle pulley 6
In wheel 22, winding is come and gone equally through leading back into another tackle pulley 6 on another arine railway 1, and in another tackle pulley 6
After 5 circles, return to and be wound on another hoist engine 9, be to have for checking two in the folding process of hull 2 on tackle steel cable 7
The red cloth bar 20 of the synchronous situation of tackle pulley 6；The slideway that tackle steel cable 7 is oriented to is led in addition, being provided with arine railway 1
Way roller 5；Hoist engine 9 is weldingly fixed on arine railway 1 by code plate 91, and the diameter of anchoring steel wire rope 8 is more than 36mm, anchoring
Block 10 is provided with anchor block pulling force eye plate, between anchoring steel wire rope 8 and anchor block pulling force eye plate, 2 liang of side draw eye plates 22 of hull
Connected by steel shackle, anchor block 10 is served as from two 25~35 tons of kentledge, pass through anchoring between two pieces of anchor blocks 10
Block connection crossbeam 101 is welded to connect, and the rear end of anchor block 9 is provided with pendant to be used to increase anchor force below the end of arine railway 1
Emergent ballast anchoring iron block 102, prevents anchor block 10 from being come off from the end of arine railway 1.
A kind of oblique slipway launching traction method, is comprised the following steps that：
1) lower water tractive force is first calculated：According to the weight of the various parts of state ship, shipment equipment, ballast before lower water
Amount, building berth skin-friction coefficient, and the empirical data that collection collects when combining water under conventional ship type are calculated after being modified and obtained
Lower water tractive force；
2) above-mentioned lower water draw-gear, including trigger 3, the stop block 4 of lower neatly plate side, the outside plate two of hull 2 are arranged
Guide roller 22, slideway guide roller 5, tackle pulley 6, tackle steel cable in the middle part of the pulling force eye plate 21 of side, the outside plate head end of hull 2
7th, anchoring steel wire rope 8, hoist engine 9, anchor block 10, emergent ballast anchor block 102, anchor block connection crossbeam 101 and simultaneous observation
Red cloth bar 21；Wherein the position of stop block is according to the length of tackle steel cable, tackle pulley windings, anchoring steel wire rope
Length computation obtain, each hull is moved down after distance reaches, and the position of stop block is placed exactly in lower section arine railway on-slip
The position of device, holds up trigger, hooking, which lives stop block, remains stationary as hull；
3) hoist engine 9 on two arine railways 1 carries out folding and unfolding tackle steel cable 7 simultaneously, and tackle pulley 6 is gradually drawn by drawing in
Rise, hull 2 is slowly moved down simultaneously, while the synchronous situation of two tackle pulley 6 in the folding process of hull 2 is checked by red cloth bar 20,
Ensure that two tackle pulleys 6 keep synchronous；
4) determined to move down in three times according to the length situation of ready tackle steel cable 7, the secondary distance moved down, is needed every time
Each tackle pulley 6 is calculated from rounding state to all elongation shapes according to the length of above-mentioned ready tackle steel cable 7 in advance
The slippage distance of state, rear trigger 3 is moved down for the first time and holds up hooking and lives stop block 4 remains stationary as hull 2, the removal of tackle pulley 6
Drawn in again after load and arrive original state, then unclamp stop block 4, allowing tackle pulley 6, stress repeats to draw for second again again, directly
Untill hull 2 to be moved on to the safe launching position specified.
Below so that two maritime platform ancillary works ships (abbreviation PSV) connect construction on oblique building berth as an example, to the present invention
It is described in further detail：
The present invention includes lower water and draws Force Calculation, and lower water draw-gear prepares, the lower several parts of water traction arrangement.
First, lower water traction Force Calculation, counts various parts, shipment equipment, the ballast of state ship before lower water respectively
The weight of thing, it is 2625 tons that collect statistics, which obtain water gross weight under single PSV, and oblique building berth slope is 1：20, inquire about oblique building berth table
Collect to calculate after the empirical data collected is modified during water under face coefficient of friction, and the conventional ship type of combination and obtain along oblique building berth table
Tractive force size when face glides is 95 tons.
2nd, lower water draw-gear prepares and lower water traction arrangement
The side draw eye plate 21 of 1 outside plate of hull two arranges 4 altogether, for the connection of assembly pulley 6 and hull 1, is welded and fixed, often
50 tons of load is only appraised and decided, 200 tons are amounted to, more than 95 tons of tractive force when gliding.
20 tons of guide rollers of load are appraised and decided in guide roller 22 in the middle part of the outside plate head end of hull 1, outfit, are weldingly fixed on hull 1
On head end outside plate, for connecting two groups of assembly pulleys 6 on two arine railways 1, it is set to keep synchronous.Supervised in real time for ease of naked eyes
Survey, a red cloth bar 20 is fastened on tackle steel cable 7, checks whether simultaneous observation red cloth bar 20 is sent out in the folding process of hull 2
Raw displacement, judges the synchronous situation of two tackle pulley 6.
Two sets of tackle pulleys 6, it is desirable to which each coaster from two 50 tons 4 wheel above models constitutes tackle pulley, every group of tackle pulley
After subtracting power through fixed pulley movable pulley, the pulling force of tackle steel cable 7 of output end is 5.7 tons.According to the existing tackle rigging model of factory,
Scene has actually selected 50 ton of 6 wheel, the coaster of 80 ton of 5 wheel, two kinds of models to constitute tackle pulley 6.
Hoist engine 9 requires that elevator pulling force is more than 5.7 tons.According to the existing hoist engine unit type of factory, scene is actual to be selected
Two pulling force are 20 tons of hoist engine 9.Hoist engine 9 is placed on the end of arine railway 1, passes through between hoist engine 9 and arine railway 1
Code plate 1491 is welded and fixed, and the two pulling force eye plates 22 welded by bottom wear anchoring steel wire rope 8 and are connected solid with anchor block 10
It is fixed.
Anchor block 10 is served as from two 30 tons of kentledge, and connecting the rigid solder of crossbeam 101 with anchor block connects, anchoring
Block 10 is enclosed at the end ladder of arine railway 1, and respectively adds one 30 tons emergent ballasts anchoring iron blocks 102 to fall in building berth pendant in building berth
Increased below end and anchor force is increased below anchor force end, prevent anchor block 10 from being come off from the end of arine railway 1.
Tackle steel cable 7 requires that, from the steel wire rope more than 28mm diameters, the rupture pull force of steel wire rope meets result of calculation.
Slideway guide roller 5 is selected from 5 tonnes of little guide rollers of guide angle, guide angle when reaching approximate 360 °
With 20 tonnes of guide rollers, slideway guide roller 5 is weldingly fixed on the steel plate of arine railway 1.
Anchoring steel wire rope 8 requires that, from the steel wire rope more than 36mm diameters, the rupture pull force of steel wire rope meets result of calculation.
Connected between anchoring steel wire rope 8 and anchor block pulling force eye plate, 2 liang of side draw eye plates 21 of hull by steel shackle.
The stop block 4 of lower neatly plate side is the small iron block of frock of several pieces of steel plate butt weldings, is welded on lower neatly plate
Sideways, the trigger 3 on hooking arine railway 1, makes hull 1 keep fixation.Specific position is according to coaster steel wire
Length, the windings of tackle pulley 6, the length computation of anchoring steel wire rope 8 of rope 7 are got, when this PSV ship launchings are drawn, factory
The tackle steel cable 7 of outfit is 700 meters, and ship initial position moves to safe launching position need to move 90 meters altogether, be divided under 3 times
Move, as shown in Figure 5,6, displacement is respectively 30 meters, 24 meters, 36 meters, move down every time after distance arrival, the position of stop block 4
The position of the lower section trigger 3 of arine railway 1 is placed exactly in, slideway trigger 3 is holded up, hooking lives stop block, and 4 keep hull 2
It is motionless, drawn in again after the removal load of tackle pulley 6, repetition is drawn next time, until hull 2 moves down into safe launching position.
Claims (10)
1. a kind of oblique slipway launching draw-gear, including two parallel arine railways and the lower neatly below ship body
Plate, it is characterised in that：The arine railway is obliquely installed in low early and high after, provided with trigger, for drawing on arine railway
Tackle pulley, tackle steel cable, hoist engine and the anchor block of hull, wherein trigger are several, and interval is laid in arine railway
Front half section, the side of lower neatly plate is provided with the stop block for hooking trigger, and tackle pulley is synchronous two groups, is set respectively
On two arine railways, the front end connection hull of assembly pulley, rear end is connected with hoist engine and anchor block, and hoist engine is fixed and set
The rearward end put in arine railway is located between anchor block and hull, and tackle steel cable is arranged on hull, tackle pulley and hoist engine
Between, opening or drawing in and then realize the traction to hull for tackle pulley is realized by hoist engine folding and unfolding tackle steel cable.
2. oblique slipway launching draw-gear according to claim 1, it is characterised in that：The tackle steel cable is one whole
Rope, the diameter of tackle steel cable is more than 28mm, and one end of tackle steel cable is on a hoist engine, and the other end enters a coaster
In group, and stretched into tackle pulley after round some circles of winding in the guide roller in the middle part of ship head end, through leading back into another
Another tackle pulley on one arine railway, and come and gone in another tackle pulley after the same number of turns of winding, return on another hoist engine
It is wound.
3. oblique slipway launching draw-gear according to claim 2, it is characterised in that：The tackle steel cable is in tackle pulley
The interior round coiling number of turns is 5 circles, and arine railway is provided with the slideway guide roller being oriented to tackle steel cable.
4. oblique slipway launching draw-gear according to claim 3, it is characterised in that：It is useful on the tackle steel cable
In the red cloth bar for checking two tackle pulley synchronous situations in ship folding process.
5. oblique slipway launching draw-gear according to claim 1, it is characterised in that：The outside plate both sides of the hull are provided with
The pulling force eye plate being connected for assembly pulley with hull, two groups of tackle pulleys are connected to pulling force by anchoring steel wire rope and steel shackle respectively
On eye plate, be provided with the middle part of ship hull plate head end makes it keep synchronous guide roller for connecting two groups of assembly pulleys.
6. oblique slipway launching draw-gear according to claim 1, it is characterised in that：The anchor block is arranged on building berth cunning
The rearward end in road, the rear end of tackle pulley is connected by anchoring steel wire rope with anchor block, welded by bottom two of hoist engine
Pulling force eye plate is worn anchoring steel wire rope and is connected with anchor block.
7. oblique slipway launching draw-gear according to claim 6, it is characterised in that：The diameter of the anchoring steel wire rope is big
In 36mm, anchor block is provided with anchor block pulling force eye plate, between anchoring steel wire rope and anchor block pulling force eye plate, two pulling force eye plates
Connected by steel shackle.
8. oblique slipway launching draw-gear according to claim 7, it is characterised in that：The hoist engine passes through code plate weld
It is fixed on arine railway, anchor block is served as from two 25~35 tons of kentledge, and anchor block is passed through between two pieces of anchor blocks
Connection crossbeam is welded to connect, and the rear end of anchor block is provided with pendant to be used to increase the emergent ballast of anchor force below arine railway end
Anchor iron block.
9. a kind of lower water traction method of oblique slipway launching draw-gear according to claim 1 to 8 any claim,
It is characterized in that comprising the following steps：
1) lower water tractive force is first calculated：According to the weight of the various parts of state ship, shipment equipment, ballast before lower water,
Collect to calculate after the empirical data collected is modified during water under building berth skin-friction coefficient, and the conventional ship type of combination and obtain lower water
Tractive force；
2) lower water draw-gear, including trigger, the stop block of lower neatly plate side, the pulling force eye of ship hull plate both sides are arranged
Guide roller, slideway guide roller, tackle pulley, tackle steel cable, anchoring steel wire rope, elevator in the middle part of plate, ship hull plate head end
Machine, anchor block, emergent ballast anchor block, anchor block connection crossbeam and the red cloth bar of simultaneous observation；
3) hoist engine on two arine railways carries out folding and unfolding tackle steel cable simultaneously, and tackle pulley is gradually drawn high by drawing in, ship
Slowly move down simultaneously, while checking two tackle pulley synchronous situation in ship folding process by red cloth bar, it is ensured that two tackle pulleys
Keep synchronous；
4) determine to divide according to the length situation of ready tackle steel cable and move down several times, rear trigger is moved down for the first time and holds up hook
Tangling stop block remains stationary as hull, is drawn in again after tackle pulley removal load, repeats second and draws, until hull is moved
Untill the safe launching position specified.
10. slipway launching traction method according to claim 8, it is characterised in that：The position root of the stop block
Obtain according to the length computation of the length of tackle steel cable, tackle pulley windings, anchoring steel wire rope, each hull moves down distance
After arrival, the position of stop block is placed exactly in the position of lower section arine railway trigger, holds up trigger, hooking lives stop block
Remain stationary as hull.
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| CN201611077717.1A CN107042879B (en) | 2016-11-29 | 2016-11-29 | A kind of oblique slipway launching traction device and method |
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| CN201611077717.1A CN107042879B (en) | 2016-11-29 | 2016-11-29 | A kind of oblique slipway launching traction device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204738A (en) * | 2018-10-19 | 2019-01-15 | 中船澄西船舶修造有限公司 | A kind of lift boat launching ramp |
| CN109231098A (en) * | 2018-10-29 | 2019-01-18 | 上海振华重工(集团)股份有限公司 | Tool part and its movement method for cutter suction dredger gantry Integral transporting |
| CN112550617A (en) * | 2020-12-04 | 2021-03-26 | 沪东中华造船(集团)有限公司 | Method for fixing anti-skid channel steel at bottom of ship launching |
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| CN104802957A (en) * | 2015-05-12 | 2015-07-29 | 广西金达造船有限公司 | Single-machine multi-control longitudinal slide way device of boat |
Cited By (4)
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