CN108189975A - A kind of scientific surveying ship with lifting fin system - Google Patents
A kind of scientific surveying ship with lifting fin system Download PDFInfo
- Publication number
- CN108189975A CN108189975A CN201711471060.1A CN201711471060A CN108189975A CN 108189975 A CN108189975 A CN 108189975A CN 201711471060 A CN201711471060 A CN 201711471060A CN 108189975 A CN108189975 A CN 108189975A
- Authority
- CN
- China
- Prior art keywords
- lifting
- lifting fin
- fin keel
- vertical shaft
- guide rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/08—Arrangement of ship-based loading or unloading equipment for cargo or passengers of winches
Abstract
The invention discloses a kind of scientific surveying ships with lifting fin system, including hull, in hull, extend the vertical shaft opened up vertically into cabin along hull bottom, the lifting fin keel for carrying detecting instrument is provided in vertical shaft, the both ends of lifting fin keel are separately provided for the guide rail mechanism that assistance for lifting fin keel slides lifting, guide rail mechanism is vertically laid with along the direction that opens up of vertical shaft on the borehole wall, it is provided with that lifting fin keel decline is driven to be detected or rise the driving mechanism withdrawn on the borehole wall of vertical shaft, one is further included when driving mechanism drives the precalculated position that drops in water of lifting fin keel to be detected for reducing the buffer gear of impact force of the driving mechanism with lifting fin keel junction.Buffer gear is not only more convenient connect oil cylinder with lifting fin keel, and when dropping to the work of underwater examinations, can effectively alleviate when ship navigate by water resistance to water-flow caused by lifting fin keel to the constant impingement power of oil cylinder and lifting fin keel.
Description
Technical field
The present invention relates to scientific investigation ship technical field more particularly to a kind of scientific surveying ships with lifting fin system.
Background technology
Laboratory of the scientific surveying ship as sea flowing is the key facility of marine exploration.At present, oceanographic survey
Marine exploration instrument on ship, some are directly installed on the outside plate of hull bottom, and some is installed on hull bottom plate or traditional
" axis-rudder " formula fin keel instrument room bottom, since underwater sound is measured with claimed below；
(1), it can be carried out under wide sea conditions (i.e. sea climate condition) and higher shipping sail speed
Work is measured, to shorten the period of measurement task, improves the utilization rate of ship and equipment；
(2), measuring instrument stretches out hull bottom a certain distance as far as possible, to avoid noise caused by hull and underwater bubble
Influence to measurement accuracy；
(3), measuring instrument position and the position of signal launch coordinate keep being relatively fixed constant, to ensure to measure number every time
According to precision；
(4), the efficiency of maintenance, maintenance and the replacement of instrument and its carrier is considered as possible and facility and is built and dimension
The cost repaiied.
The former the defects of, is that detecting devices can not avoid the turbosphere of floor, greatly reduces detection accuracy, can also
Since the Cavitation effect of turbosphere influences the service life of instrument；The disadvantage of latter configuration form be exactly be not easy to fin keel and
Maintenance, maintenance and the replacement of interior instrument must lie up once breaking down and repair, in addition, since fin keel is stretched for a long time
Go out other than hull, big by water flow impact pressure due to ship resistance, fin keel will be chronically at stress, need to set dedicated
Underwater locking device ensures the safe and stable of instrument room, and the opposite increase of real draft of scientific investigation ship can also be made (to stretch out ship
Fin keel height other than body), therefore its navigation area is restricted, fin keel service life shortens dramatically.The height of marine exploration activity
Scientific and technological property determines that fin keel instrument room should safe and reliable and vibration and noise reducing to a certain extent.But above-mentioned lifting fin keel
Device can not solve hull in navigation, influence of the resistance to water-flow to lifting fin keel, can so that lifting fin keel vibrates,
Connection directly between lifting fin keel and hull causes greater impact, connecting portion can be caused to damage long lasting for impact.
Invention content
In view of the deficienciess of the prior art, the technical problem to be solved by the invention is to provide one kind can pass through it
Elevating mechanism realizes fin keel instrument room moving up and down in hull interior deep-well, effectively avoids hull bottom bubble layer to detecting environment
Influence, and alleviate because resistance to water-flow lifting fin keel caused by influence have lifting fin system scientific surveying ship.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of section with lifting fin system
Research ship is learned, including hull, in hull, extends the vertical shaft opened up vertically into cabin along hull bottom, is set in vertical shaft useful
In carry detecting instrument when detection when along vertical shaft extend downwardly into water reach precalculated position lifting fin keel, the lifting fin keel
Both ends be separately provided for the guide rail mechanism that assistance for lifting fin keel slides lifting, guide rail mechanism opens up direction along vertical shaft
It is vertically laid on the borehole wall, is provided on the guide rail mechanism and is used to lock when the precalculated position that lifting fin keel is dropped in water
The lock pin of fin keel is lifted, is provided with that lifting fin keel decline is driven to be detected or rise the drive withdrawn on the borehole wall of vertical shaft
Motivation structure further includes one and is used to reduce drive when the precalculated position that driving mechanism drives lifting fin keel to drop in water is detected
The buffer gear of motivation structure and the impact force of lifting fin keel junction.
The above-mentioned scientific surveying ship with lifting fin system, the buffer gear include being arranged on lifting fin keel
Pedestal with inner cavity is provided with a fluid damping cavity that the inner cavity is divided into bottom being connect with pedestal and top in the lumen
The partition board of the elastic buffer chamber in portion, the elastic buffer intracavitary is equipped with a connecting base plate being connected with driving mechanism, around connection
The circumferential direction of seat board is evenly equipped with multiple springs being connected with elastic buffer cavity wall, and one is provided in the bottom of connecting base plate and is passed through downwards
Partition board stretches into the body of rod for the fluid damping cavity for being marked with high-viscosity oil, and the leaf of multiple connections intersected with each other is provided on the body of rod
Piece, offered on partition board allow the body of rod pass through for adapt to lifting fin keel generate vibration displacement when adjustment hole, it is described every
One is connected between plate and the body of rod for sealing the elastic rubber pouch of adjustment hole.
The above-mentioned scientific surveying ship with lifting fin system, the aperture of the adjustment hole are more than the outer diameter of the body of rod.
The above-mentioned scientific surveying ship with lifting fin system, the elastic rubber pouch upper end is fixed on outside the body of rod
Portion, lower end are fixed on the upper surface of partition board, are provided in partition board upper surface around adjustment hole and are connect with elastic rubber pouch
For enhancing the rubber layer of sealing performance.
The above-mentioned scientific surveying ship with lifting fin system, the connecting base plate includes a terminal pad, in terminal pad
Upper surface be symmetrically arranged with two otic placodes being connected with driving mechanism, the connection for connecting rotational pin is opened up on two otic placodes
Hole, the spring one end are connected on the internal chamber wall of pedestal, and the other end is connected in terminal pad, the body of rod along the center of terminal pad to
It is lower to be extended.
The above-mentioned scientific surveying ship with lifting fin system, the driving mechanism are vertically fixed in vertical shaft including one
Two-stage oil cylinder on wall, the down-set telescopic piston rod in two-stage oil cylinder, the bottom end of the piston rod be provided with one with
The connector of two otic placodes rotation connection, connector are connect by the rotational pin being installed in connecting hole with two otic placodes.
The above-mentioned scientific surveying ship with lifting fin system, the guide rail mechanism include vertically being set on flipper respectively
The main guide rail of prelaminar part and the secondary guide rail of flipper postlaminar part both sides, lock pin is respectively arranged on main guide rail and two secondary guide rails, main
The lifting area of a triangle is formed between guide rail and two secondary guide rails, the lifting fin keel is located at the lifting area of major and minor guide rail composition
It is interior.
The above-mentioned scientific surveying ship with lifting fin system, the lifting fin keel include having two by what steel plate formed
The rotating part that the ship type tube body of layer structure, the forepart setting of ship type tube body and main guide rail are slidably matched, the rear portion two of ship type tube body
Side sets the right angle portion being slidably matched with two secondary guide rails respectively, and the instrument for installing testing stand is offered on ship type tube body
Cabin, the testing stand for carrying detecting instrument are fixed in instrument room and extend downwardly the bottom surface of ship type tube body.
Above-mentioned has the scientific surveying ship for lifting fin system, is equipped with to overhaul flipper at the top of the vertical shaft
The lifting device of plate, the lifting device include hydraulic wireline winch, movable pulley and steel wire rope, wirerope-winding on hydraulic wireline winch simultaneously
It stretches out, the top of vertical shaft is fixed on across movable pulley.
The above-mentioned scientific surveying ship with lifting fin system, the two-stage oil cylinder pass through vertically arranged multiple fixations
Snap-gauge is fixed on vertical shaft inner wall.
The present invention has the advantages that the scientific surveying ship of lifting fin system is：For launching oceanographic survey survey meter
Device, the drawbacks of fin keel instrument room is effectively avoided to be chronically at other than hull, pass through driving mechanism not only effective protection fin keel instrument
Cabin and the detection instrument of internal installation, and influence of the hull bottom bubble layer to detection can be reasonably avoided, it is provided for survey meter good
Good detection environment, and it is simple in structure, convenient for the maintenance, maintenance and replacement of fin keel and interior instrument.And buffer gear
Setting, it is not only more convenient to connect oil cylinder with lifting fin keel, and when dropping to underwater examinations work, effectively delay
Solution when ship navigates by water resistance to water-flow lifting fin keel caused by oil cylinder and lift fin keel constant impingement power, extend oil cylinder and
Lift the service life of fin keel.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is to lift the schematic enlarged-scale view that fin keel is connect with guide rail mechanism；
Fig. 3 is the schematic enlarged-scale view of buffer gear；
Fig. 4 is the overlooking structure figure of buffer gear；
Fig. 5 is the position assumption diagram that oil cylinder is connect with lifting fin keel；
Fig. 6 is the usage state diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further details the present invention；
As shown in Fig. 1,2,3,4,5,6, a kind of scientific surveying ship with lifting fin system, including hull 38, in ship
In body 38, extend the vertical shaft 3 opened up vertically into cabin 2 along hull bottom 1, the top of the vertical shaft 3 is equipped with to overhaul lifting
The lifting device 5 of fin keel 4, the lifting device 5 include hydraulic wireline winch 6, movable pulley 7 and steel wire rope 8, and steel wire rope 8 is wound in liquid
It on pressure winch 6 and stretches out, the top of vertical shaft 3 is fixed on across movable pulley 7.
Be provided in vertical shaft 3 for carry detecting instrument when detection when along vertical shaft 3 extend downwardly into water pass through bubble
Layer 9 reach precalculated positions lifting fin keel 4, bubble layer 9 by ship navigation during alow generate, generally hull bottom 1 to
2.5~2.9 meters lower, underwater detection needs to avoid the influence of bubble layer 9.The both ends of the lifting fin keel 4 are respectively arranged with use
The guide rail mechanism of lifting is slided in assistance for lifting fin keel 4, guide rail mechanism is vertically laid with along the direction that opens up of vertical shaft 3 on the borehole wall,
Be provided on the guide rail mechanism when lift fin keel 4 drop to the precalculated position in water when for lock lifting fin keel 4 lock pin
10, the guide rail mechanism includes vertically being set on the pair of the 4 rear portion both sides of main guide rail 11 and lifting fin keel of 4 forepart of lifting fin keel respectively
Guide rail 12, lock pin 10 are respectively arranged on the secondary guide rail 12 of main guide rail 11 and two, and one is formed between the secondary guide rail 12 of main guide rail 11 and two
The lifting area of triangle, the lifting fin keel 4 are located in the lifting area that the secondary guide rail 12 of main guide rail 11 and two forms.The flipper
Plate 4 includes the ship type tube body 13 with double-layer structure being made of steel plate, and the forepart setting of ship type tube body 13 is slided with main guide rail 11
The rotating part 14 of dynamic cooperation, the rear portion both sides of ship type tube body 13 set the right angle portion 15 being slidably matched with two secondary guide rails 12 respectively,
The instrument room 16 for installing testing stand is offered on ship type tube body 13, the testing stand 17 for carrying detecting instrument is fixed on
Instrument room 16 is interior and extends downwardly the bottom surface of ship type tube body 13.
It is provided with that lifting fin keel 4 is driven to decline the driving machine for being detected or rising and withdraw on the borehole wall of vertical shaft 3
Structure, driving mechanism includes a vertical two-stage oil cylinder 18 being fixed on 3 inner wall of vertical shaft, down-set in two-stage oil cylinder 18 to stretch
The piston rod 19 of contracting, the bottom end of the piston rod 19 are provided with a connector 32 being rotatablely connected with lifting fin keel 4,
One is further included to be used to reduce when the precalculated position that driving mechanism drives lifting fin keel 4 to drop in water is detected
Driving mechanism and the buffer gear 20 of the impact force of 4 junction of lifting fin keel.The buffer gear 20 includes being arranged on flipper
The pedestal 21 with inner cavity on plate 4 is provided with the oil that the inner cavity is divided into bottom being connect with pedestal 21 in the lumen
The partition board 24 of the elastic buffer chamber 23 at liquid damping cavity 22 and top, the elastic buffer chamber 23 is interior to be connected equipped with one with driving mechanism
Connecting base plate 25, be evenly equipped with multiple springs 26 being connected with 23 inner wall of elastic buffer chamber around the circumferential direction of connecting base plate 25,
The bottom of connecting base plate 25 is provided with the body of rod 27 for stretching into the fluid damping cavity 22 for being marked with high-viscosity oil through partition board 24 downwards,
The connecting base plate 25 include a terminal pad 28, be symmetrically arranged in the upper surface of terminal pad 28 one be connected with driving mechanism two
Otic placode 29 opens up the connecting hole 31 for connecting rotational pin 30 on two otic placodes 29, and described 26 one end of spring is connected to pedestal 21
On internal chamber wall, the other end is connected in terminal pad 28, and the center of the body of rod 27 along terminal pad 28 extends downwardly setting.Connector 32 passes through
The rotational pin 30 being installed in connecting hole 31 is connect with two otic placodes 29.Two-stage oil cylinder 18 passes through vertically arranged multiple fixing chuck plates
33 are fixed on the inner wall of vertical shaft 3.
The blade 34 of multiple connections intersected with each other is provided on the body of rod 27, being offered on partition board 24 allows the body of rod 27 to wear
That crosses is used to adapt to the adjustment hole 35 when lifting fin keel 4 generates vibration displacement, and the aperture of the adjustment hole 35 is more than the body of rod 27
Outer diameter.One is connected between the partition board 24 and the body of rod 27 for sealing the elastic rubber pouch 36 of adjustment hole 35.The elasticity
36 upper end of rubber pouch is fixed on outside the body of rod 27, and lower end is fixed on the upper surface of partition board 24, around adjustment hole 35 every
24 upper surface of plate is provided with the rubber layer 37 for being used to enhance sealing performance being connect with elastic rubber pouch 36.
The present invention working mechanism be：(1) when needing to carry out marine exploration, system will lift fin keel 4 in company with internal instrument
Device is down to hull baseline hereinafter, the bubble layer 9 of hull bottom 1 is avoided, so as to increase detection accuracy；(2) it is promoted during cruising condition
To position that is concordant with floor or rising, effectively reduce because lifting 4 increased ship resistance of fin keel, and effective protection lifts
Fin keel 4；(3) when lifting fin keel 4 and needing to safeguard, then hull interior, waterline are risen to upper bit, is lain up time so as to reduce
Number reduces use cost.
Certainly, it is limitation of the present invention that above description, which is not, and the present invention is also not limited to the example above, the art
Those of ordinary skill, in the essential scope of the present invention, the variations, modifications, additions or substitutions made should all belong to the present invention
Protection domain.
Claims (10)
1. a kind of scientific surveying ship with lifting fin system, including hull, it is characterised in that：In hull, along hull bottom to
Extend the vertical shaft opened up in cabin vertically, be provided in vertical shaft for carry detecting instrument when detection when stretched downwards along vertical shaft
Enter to reach the lifting fin keel in precalculated position in water, the both ends of the lifting fin keel are separately provided for assistance for lifting fin keel cunning
The guide rail mechanism of dynamic lifting, guide rail mechanism are vertically laid on the borehole wall along the direction that opens up of vertical shaft, are set on the guide rail mechanism
Have when lift fin keel drop to the precalculated position in water when for lock lifting fin keel lock pin, be provided on the borehole wall of vertical shaft
For lifting fin keel decline to be driven to be detected or rise the driving mechanism withdrawn, one is further included when driving mechanism drives flipper
For reducing the slow of impact force of the driving mechanism with lifting fin keel junction when the precalculated position that plate is dropped in water is detected
Punch mechanism.
2. the scientific surveying ship with lifting fin system according to claim 1, it is characterized in that：The buffer gear packet
Include be arranged on lifting fin keel on the pedestal with inner cavity, be provided in the lumen one connect with pedestal the inner cavity is divided into
The partition board of the fluid damping cavity of bottom and the elastic buffer chamber at top, the elastic buffer intracavitary are connected equipped with one with driving mechanism
Connecting base plate, multiple springs being connected with elastic buffer cavity wall are evenly equipped with around the circumferential direction of connecting base plate, in connecting base plate
Bottom be provided with the body of rod for stretching into the fluid damping cavity for being marked with high-viscosity oil through partition board downwards, be provided on the body of rod more
The blade of a connection intersected with each other, the lifting fin keel that is used to adapt to that being offered on partition board allows the body of rod to pass through generate vibration displacement
When adjustment hole, one is connected between the partition board and the body of rod for sealing the elastic rubber pouch of adjustment hole.
3. the scientific surveying ship with lifting fin system according to claim 2, it is characterized in that：The hole of the adjustment hole
Diameter is more than the outer diameter of the body of rod.
4. the scientific surveying ship with lifting fin system according to claim 3, it is characterized in that：The elastic rubber capsule
Bag upper end is fixed on outside the body of rod, and lower end is fixed on the upper surface of partition board, is provided with around adjustment hole in partition board upper surface
What is connect with elastic rubber pouch is used to enhance the rubber layer of sealing performance.
5. the scientific surveying ship with lifting fin system according to claim 2, it is characterized in that：The connecting base plate packet
A terminal pad is included, two otic placodes being connected with driving mechanism are symmetrically arranged in the upper surface of terminal pad, use is opened up on two otic placodes
In the connecting hole of connection rotational pin, the spring one end is connected on the internal chamber wall of pedestal, and the other end is connected in terminal pad, bar
The center of body along terminal pad extends downwardly setting.
6. the scientific surveying ship with lifting fin system according to claim 5, it is characterized in that：The driving mechanism packet
Include a vertical two-stage oil cylinder being fixed on vertical shaft inner wall, down-set telescopic piston rod, the work in two-stage oil cylinder
The bottom end of stopper rod is provided with the connector of one and two otic placodes rotation connection, and connector passes through the rotational pin and two ears that are installed in connecting hole
Plate connects.
7. the scientific surveying ship with lifting fin system according to claim 1, it is characterized in that：The guide rail mechanism packet
It includes respectively vertically set on the secondary guide rail of the main guide rail of flipper prelaminar part and flipper postlaminar part both sides, lock pin is respectively arranged at master
On guide rail and two secondary guide rails, form the lifting area of a triangle between main guide rail and two secondary guide rails, the lifting fin keel be located at it is main,
In the lifting area of secondary guide rail composition.
8. the scientific surveying ship with lifting fin system according to claim 7, it is characterized in that：The lifting fin keel packet
Include the ship type tube body with double-layer structure being made of steel plate, the revolution that the forepart setting of ship type tube body and main guide rail are slidably matched
Portion, the rear portion both sides of ship type tube body set the right angle portion being slidably matched with two secondary guide rails, are opened up on ship type tube body useful respectively
In the instrument room of installation testing stand, the testing stand for carrying detecting instrument is fixed in instrument room and extends downwardly ship type tube body
Bottom surface.
9. the scientific surveying ship with lifting fin system according to claim 1, it is characterized in that：The top of the vertical shaft
Lifting device for overhauling lifting fin keel is installed, which includes hydraulic wireline winch, movable pulley and steel wire rope, steel wire
Rope is wound on hydraulic wireline winch and stretches out, and the top of vertical shaft is fixed on across movable pulley.
10. the scientific surveying ship with lifting fin system according to claim 6, it is characterized in that；The two-stage oil cylinder
It is fixed on vertical shaft inner wall by vertically arranged multiple fixing chuck plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711471060.1A CN108189975B (en) | 2017-12-22 | 2017-12-22 | A kind of scientific surveying ship with lifting fin system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711471060.1A CN108189975B (en) | 2017-12-22 | 2017-12-22 | A kind of scientific surveying ship with lifting fin system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108189975A true CN108189975A (en) | 2018-06-22 |
| CN108189975B CN108189975B (en) | 2019-08-13 |
Family
ID=62586330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711471060.1A Active CN108189975B (en) | 2017-12-22 | 2017-12-22 | A kind of scientific surveying ship with lifting fin system |
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| Country | Link |
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| CN (1) | CN108189975B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109625203A (en) * | 2018-12-27 | 2019-04-16 | 国家海洋局第海洋研究所 | A kind of intelligent tank stabilizer system of ship |
| CN110304207A (en) * | 2019-07-16 | 2019-10-08 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Special measurement ship for submarine pipeline and cable inspection upkeep operation |
| CN111846119A (en) * | 2020-07-09 | 2020-10-30 | 北京星光凯明智能科技有限公司 | Lifting and attitude control device and control method for shipborne underwater detection equipment |
| CN112591014A (en) * | 2020-12-25 | 2021-04-02 | 三峡大学 | Lifting device and method for scientific investigation lifting fin plate with anti-collision function |
| CN113879482A (en) * | 2021-10-29 | 2022-01-04 | 中船黄埔文冲船舶有限公司 | Sectional carrying synchronous positioning method for lifting fin supporting plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109625203A (en) * | 2018-12-27 | 2019-04-16 | 国家海洋局第海洋研究所 | A kind of intelligent tank stabilizer system of ship |
| CN109625203B (en) * | 2018-12-27 | 2020-12-15 | 自然资源部第一海洋研究所 | Intelligent anti-rolling water tank system for ship |
| CN110304207A (en) * | 2019-07-16 | 2019-10-08 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Special measurement ship for submarine pipeline and cable inspection upkeep operation |
| CN111846119A (en) * | 2020-07-09 | 2020-10-30 | 北京星光凯明智能科技有限公司 | Lifting and attitude control device and control method for shipborne underwater detection equipment |
| CN112591014A (en) * | 2020-12-25 | 2021-04-02 | 三峡大学 | Lifting device and method for scientific investigation lifting fin plate with anti-collision function |
| CN113879482A (en) * | 2021-10-29 | 2022-01-04 | 中船黄埔文冲船舶有限公司 | Sectional carrying synchronous positioning method for lifting fin supporting plate |
| CN113879482B (en) * | 2021-10-29 | 2023-12-26 | 中船黄埔文冲船舶有限公司 | Sectional carrying and synchronous positioning method for lifting fin support plate |
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| Publication number | Publication date |
|---|---|
| CN108189975B (en) | 2019-08-13 |
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