CN104875871B - Rectifying device of rudder for ship - Google Patents
Rectifying device of rudder for ship Download PDFInfo
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- CN104875871B CN104875871B CN201510281811.8A CN201510281811A CN104875871B CN 104875871 B CN104875871 B CN 104875871B CN 201510281811 A CN201510281811 A CN 201510281811A CN 104875871 B CN104875871 B CN 104875871B
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Abstract
The invention relates to a rectifying device of a rudder for a ship. The rectifying device comprises a rudder angle information receiving device, a control mechanism, a first pair of driving mechanisms and a second pair of driving mechanisms, wherein the rudder angle information receiving device is connected with an operating mechanism of the ship through a signal cable; the control mechanism comprises a module for computing the length according to rudder angle information and a control module for controlling the driving mechanism; a forwardly-projecting radian exists in a vertical gap between the rudder and the upper part of a rudder horn; a backwardly-projecting radian exists in a vertical gap between the rudder and the lower part of a rudder horn; the first pair of driving mechanisms serves for the upper vertical gap, and is arranged on both sides inside a rudder horn structure; the first pair of driving mechanisms drives a first pair of adjusting plates to move forwards and backwards; the first pair of adjusting plates is equal to the upper vertical gap in height; a first pair of flexible contact plates at the tail ends of the first pair of adjusting plates blocks the upper vertical gap; the second pair of driving mechanisms serves for the lower vertical gap, and is arranged in the rudder horn structure; the second pair of driving mechanisms drives a second pair of adjusting plates to move forwards and backwards; the second pair of adjusting plates is equal to the lower vertical gap in height; a second pair of flexible contact plates at the tail ends of the second pair of adjusting plates blocks the lower vertical gap.
Description
Technical field
The present invention relates to a kind of fairing of ship rudder, belongs to ship rudder technical field.
Background technology
In maritime field, the rudder of high-speed craft generally faces the cavity problem produced because of cavitation.
When water high speed is moved, surface pressing changes rudder.When rudder surface, local pressure is reduced to water temperature pair at that time
During the water saturation steam pressure answered, the water explosion type vaporization of this area of low pressure, the air gas core for existing in water originally make
Air gas swelling of nucleus, forms bubble, i.e., so-called cavity.Cavity can reduce the hydrodynamic performance of rudder and maneuvering performance.This
A little cavitys are entered behind higher-pressure region with current, are crumbled and fall in higher-pressure region.The process for crumbling and fall, pressure increase suddenly.If generation of crumbling and fall exists
Rudder surface, will also result in the surface deterioration of rudder, also causes the vibration of rudder, and produces noise.
After the rudder of ship is arranged in fixed Ship Structure, the sky that the gap between rudder body and Ship Structure easily causes
Bubble；The rudder of ship is divided into several different pieces, the cavity that the gap between different piece also easily causes；Rudder with come flow angle compared with
Cavity can also be caused when big.
Referring to Fig. 5-Fig. 6, when there is gap between rudder part, can produce from higher-pressure region during control vane and flow between low-pressure area
Clearance flow is moved.In rudder gap, flowing is time-dependent, may produce cavity and bubble collapse occurs, cause gap in gap
Interior bubble cavitation.The cavity produced in gap is crumbled and fall on rudder surface.
Referring to Fig. 6, particularly, semi-spade rudder system, at the installation rudder pintle of rudder horn, because of rudder horn line style reason,
With speed forward, this speed and former low pressure side liquid interaction forward causes streamline in this position to the current that clearance flow goes out
The separation put, defines very short area of low pressure on the rudder surface at rudder horn rear, and cavity is quickly generated in this region, rapidly
Crumble and fall.This region is also cavity hotspots on ship.
The content of the invention
The technical problem to be solved in the invention is：After the rudder of existing ship is arranged in fixed Ship Structure, rudder body
The cavity that gap between Ship Structure easily causes；The rudder of ship is divided into several different pieces, between different piece between
The cavity that gap also easily causes；Rudder with come flow angle it is larger when can also cause cavity；The current that rudder body space flows out are with forward
Speed, this forward speed interact with former low pressure side liquid, cause separation of the streamline in this position.
The present invention takes technical scheme below：
A kind of fairing of ship rudder, including rudder angle information receiver 39, is arranged in ship, by signal electricity
Cable is connected with the operating mechanism of ship；Controlling organization 40, is arranged in ship, carries out length computation including according to rudder angle information
The control module of module and control drive mechanism 41,42；Rudder has radian raised forward with the vertical gap 22 in rudder horn top,
There is the first couple that radian raised backward serves the vertical gap in the top 22 to drive for rudder and the vertical gap 23 in rudder horn bottom
Motivation structure 41,42, is arranged in rudder horn inside configuration both sides；First pair of drive mechanism 41,42 drives first pair of adjustment plate
45th, 46 move forward and backward, the height such as vertical gap in the first pair of adjustment plate 45,46 and top 22, first pair of flexible contact of its end
The top vertical gap 22 is blocked by plate 49,50；Second pair of drive mechanism 43 in the vertical gap in the bottom 23 is served,
44, it is arranged in rudder horn structure；Second pair of drive mechanism 43,44 drives second pair of adjustment plate 47,48 to move forward and backward, the
The height such as the vertical gap in the two pairs of adjustment plates 47,48 and bottom 23, second pair of flexible contact plate 51,52 of its end is by the bottom
Vertical gap 23 blocks；Also there is between the rudder and rudder horn lateral clearance 24, the lateral clearance 24 is adjusted using level
Whole plate is fixed closure.
Rudder angle information receiver receives rudder angle rotational angle information, and control structure is calculated automatically by PLC control panels
The displacement of left and right side of a ship drive mechanism, then control the adjustment plate water of two pairs of drive mechanisms two pairs of left and right sides of a ship of drive of port and starboard
Translation is dynamic, and the flexible contact plate of adjustment plate end is blocked to upper and lower, two vertical gaps；Additionally, lateral clearance itself is
Blocked by horizontal adjustment plate.So as to avoid the cavity caused due to the gap between rudder body and Ship Structure, for bottom
For vertical gap 23, due to being also avoided that it is inconsistent that the water (flow) direction in the vertical gap in bottom and navigation water (flow) direction are produced,
So as to also have certain rectified action.
Further, the drive mechanism is directly driven by a motor or electric hydraulic drives.
Further, the flexible contact plate be by wire as the resilient material of tool of inner skeleton structure.
Further, second pair of flexible contact plate 51,52 tail ends with the vertical gap in the bottom 23 to cooperation
Line style, to play adjustment water (flow) direction, affect the effect in flow field.
Further, each drive mechanism includes a moveable mobile bar, and mobile bar mobile bar is connected with adjustment plate,
Mobile bar drives adjustment plate to move forward and backward under drive mechanism driving, and each flexible contact plate is separately fixed at each adjustment plate
On, move with adjustment plate, the perforate passed through for mobile bar and the groove for wearing collection for mobile bar are set on rudder horn,
The tapping of rudder horn arranges sealing device, to ensure that water will not enter rudder horn by perforate when rudder horn is under water
It is interior.
The beneficial effects of the present invention is：
1) cavity caused due to the gap between rudder body and Ship Structure is avoided, life-span and the security of rudder body is lifted
Energy.
2) bubble collapse position is delayed to rudder tail end, so as to reduce damage of the bubble collapse to rudder.
3) simple structure, designs ingenious.
4) displacement of left and right side of a ship drive mechanism is calculated automatically using control system, and control is simple, convenient.
Description of the drawings
Fig. 1 is the structural representation of the rudder with rudder horn of hull afterbody in prior art.
Fig. 2 is A-A sectional views in Fig. 1.
Fig. 3 is B-B sectional views in Fig. 1.
Fig. 4 is C-C sectional views in Fig. 1.
Gap schematic diagram during Fig. 5 is prior art, between rudder and rudder horn top.
Gap schematic diagram during Fig. 6 is prior art, between rudder and rudder horn bottom.
Fig. 7 is the block diagram of the control system of the fairing of ship rudder of the present invention.
Fig. 8 is the facade structures figure of the fairing of ship rudder of the present invention.
Fig. 9 is the structural representation that the fairing of ship rudder of the present invention is located at the vertical gap in top.
Figure 10 is structural representation corresponding with Fig. 9, when rudder is relatively rotated with rudder horn.
Figure 11 is the partial enlarged drawing at square frame position in Figure 10.
Figure 12 is the structural representation that the fairing of ship rudder of the present invention is located at the vertical gap in bottom.
Figure 13 is structural representation corresponding with Figure 12, when rudder is relatively rotated with rudder horn.
Figure 14 is the enlarged drawing at square frame position in Figure 13.
Specific embodiment
With reference to specific embodiments and the drawings, the present invention is further described.
First, introduce present invention structure division same as the prior art：
Many ships employ half suspension, half spade-type rudder system, system Jing frequently with form just like Fig. 1-Fig. 3 institutes
Show, a ship can arrange one or more rudders 2, each 2 position of rudder is provided with rudder horn 3 accordingly；Rudder 2 is located at the tail of ship 1
Portion；Rudder horn 3 is fixed on ship 1；After the top of rudder 2 is arranged in fixed rudder horn 3；The bottom of rudder 2 is not provided with rudder horn；
There is gap between rudder 2 and rudder horn 3, including vertical gap 22,23 and horizontal clearance 24,25；Rudder 2 is by rudder stock 5 and ship 1
Steering gear be connected；Rudder pintle 6 is connected with rudder 2；Rudder pintle 6 is provided with sliding bearing through among rudder horn 3 between rudder horn 3,
Rudder 2 can be transferred to rudder horn 3 by rudder pintle 6 in the power and moment of flexure suffered by X/Y plane；Steering gear can drive rudder by rudder stock 5
2 and rudder pintle 6 rotate around rudderpost line 4；Cross section is the section that intercepts of plane perpendicular to rudderpost line 4；There is the position of rudder horn 3,
On differing heights, rudder 2 is different with the position relationship of rudder horn 3；In the height for being not provided with rudder pintle 6, rudder 2 extend to rudderpost line it
Before, as shown in Figure 3；Arrange rudder pintle 6 height, after rudder horn 3 extends to rudderpost line, as shown in Figure 2；Without rudder horn 3
Position, as shown in Figure 4；
For ease of description, the outer surface of 2 cross section of rudder is divided into into 3 parts, is in the middle of rudder leading edge 7,13,19, rudder respectively
Part 8,14,20 and rudder trailing edge 9,15,21；
For ease of description, the outer surface of 3 cross section of rudder horn is divided into into 3 parts, be respectively rudder horn leading edge 10,16,
Rudder horn mid portion 11,17 and rudder horn trailing edge 12,18；
There iing rudder horn position, when rudder 2 is in equilbrium position：In rudder horn leading edge 10,11 rudder of rudder horn mid portion
Between part 8 and rudder trailing edge 9 collectively form a streamlined line style；Rudder horn leading edge 10,11 rudder pars intermedia of rudder horn mid portion
Points 8 and rudder trailing edge 9 collectively form a streamlined line style；
There are 3 height of rudder horn, rudder horn trailing edge 12,18 and rudder leading edge 7, between 13, there is down suction 22,23.
Hereinafter the present invention is introduced to the structure division that prior art contributes
Referring to Fig. 7-Fig. 8, the present invention includes rudder angle information receiver 39；Be arranged in ship, by signal cable with
The operating mechanism of ship is connected；Controlling organization 40, is arranged in ship, including the module for carrying out length computation according to rudder angle information
With the control module of control drive mechanism 41,42；
Referring to Fig. 8-Figure 11, the drive mechanism 41,42 in vertical gap 22 is served；It is arranged in rudder horn structure, which can
Think motor direct-drive formula or electric hydraulic；
Referring to Figure 12-Figure 14, the drive mechanism 43,44 of 23 sum of vertical gap is served；It is arranged in rudder horn structure, its
Can be motor direct-drive formula or electric hydraulic；
Referring to Fig. 9-Figure 11, the adjustment plate 45,46 in vertical gap 22 is served, on X/Y plane, which is near rudder horn side
For flat, it is curved face type away from rudder horn side, using the section line style at rudder horn, in short transverse, with vertical gap 22
Equal height；
Referring to Figure 12-Figure 14, the adjustment plate 47,48 in vertical gap 23 is served, on X/Y plane, which is near rudder horn side
For flat, it is curved face type away from rudder horn side, using the section line style at rudder horn, in short transverse, is slightly less than vertical
Gap 23 and 24 height sum of lateral clearance；
Referring to Fig. 9-Figure 11, the flexible contact plate in vertical gap 22 is served；Using seawater corrosion resistance, with certain firm
Degree, end is the compressible material in end with elasticity, is such as locally embedded with the rubber slab of metal, synthetic material etc.；
Referring to Figure 12-Figure 14, and Fig. 1, the flexible contact plate 51,52 in vertical gap 23 is served；And lateral clearance 24
Interior flexible contact plate, using the nonrigid material of seawater corrosion resistance, such as rubber, synthetic material etc.；Using seawater corrosion resistance, have
There is certain rigidity, end is the compressible material in end with elasticity, be such as locally embedded with the rubber slab of metal, synthetic material etc.；
This flexible contact plate tail end is specifically designed its line style according to actual items, to play adjustment water (flow) direction, affects the effect in flow field；
Referring to 9,12, label 53-56 represents sealing device；
After the steering gear of ship carries out steering, by rudder angle information receiver 39 by rudder angle information transmission to control machine
In structure 40, the PLC in controlling organization is calculated respectively according to the algorithm for pre-entering to be needed port and starboard adjustment plate 45-48
Mobile distance, controls drive mechanism 41-44 of port and starboard afterwards respectively, drives adjustment plate 45-48 and flexible contact plate 49-52
To needing position.Control flow refers to Fig. 7.
Each drive mechanism 41-44 includes a transportable mobile bar 57～60, and mobile bar is connected with adjustment plate, moves
Lever 57～60 can drive adjustment plate 45-48 to move forward and backward in the case where drive mechanism 41-44 drives, flexible contact plate 49-52 difference
It is fixed in adjustment plate 45-48, moves with adjustment plate 45-48.Arrange for opening that mobile bar is passed through in 3 structure of rudder horn
Hole and the groove of collection is worn for mobile bar.Sealing device 53-56 is set in the tapping of rudder horn, to ensure at rudder horn 3
When under water, water will not be entered in rudder horn 3 by perforate.
Serve the drive mechanism 41,42 in vertical gap 22；To drive adjustment plate 45,46 and flexible contact plate 49,50 to
The position that flexible contact plate is contacted with rudder and compressed；To realize closing the purpose in vertical gap 22；The length root of flexible contact plate
It is specifically designed according to actual items, it is ensured that when the rudder anglec of rotation is between -10 degree of degree～+10, it is ensured that flexible contact plate end
End flexible portion can be compressed with rudder, make current be beyond -10 degree models of degree～+10 by rudder gap 22 in the rudder anglec of rotation
When enclosing, it is ensured that flexible contact plate end flexible portion can be contacted with rudder, the current by rudder gap 22 are reduced,
Serve the drive mechanism 43,44 of vertical gap 23 and lateral clearance 24；Will drive adjustment plate 47,48 and flexibility connect
Touch panel 51,52 to predetermined location；Soft readjustment plate will be essentially according to when the rudder anglec of rotation be between -10 degree of degree～+10
Water (flow) direction is designed, to realize adjusting the purpose of water (flow) direction.
The present invention changes the gap between rudder different piece, affects current between gap, it is possible to reduce rudder cavity, or by sky
Steep position of crumbling and fall to delay to rudder tail end, reduce bubble collapse and rudder is damaged.
Claims (5)
1. a kind of fairing of ship rudder, it is characterised in that：
Including rudder angle information receiver (39), it is arranged in ship, is connected with the operating mechanism of ship by signal cable；
Controlling organization (40), is arranged in ship, including the module and control driving machine that carry out length computation according to rudder angle information
Structure (41, control module 42)；
Rudder has radian raised forward with the vertical gap in rudder horn top (22), and rudder is had with the vertical gap in rudder horn bottom (23)
There is radian raised backward；
Serve the vertical gap in the top (22) first pair of drive mechanism (41,42), be arranged in rudder horn inside configuration two
Side；First pair of drive mechanism (41,42) drive first pair of adjustment plate (45,46) to move forward and backward, the first pair of adjustment plate (45,
46) with the height such as the vertical gap in top (22), first pair of flexible contact plate (49,50) of its end is by the top vertical gap
(22) block；
Serve the vertical gap in the bottom (23) second pair of drive mechanism (43,44), be arranged in rudder horn structure；It is described
(43,44) second pair of adjustment plate (47,48) of drive is movable, and second pair of adjustment plate (47,48) is with for second pair of drive mechanism
The bottom vertical gap (23) are sealed by the height such as vertical gap in portion (23), second pair of flexible contact plate (51,52) of its end
Block；
Also there is between the rudder and rudder horn lateral clearance (24), lateral clearance (24) carry out solid using horizontal adjustment plate
It is fixed to block.
2. the fairing of ship rudder as claimed in claim 1, it is characterised in that：The drive mechanism is directly driven by motor
Dynamic or electric hydraulic drives.
3. the fairing of ship rudder as claimed in claim 1, it is characterised in that：The flexible contact plate is by wire
As the structure of the resilient material of tool of inner skeleton.
4. the fairing of ship rudder as claimed in claim 1, it is characterised in that：Second pair of flexible contact plate (51,
52) tail end to play adjustment water (flow) direction, affects the work in flow field with the vertical gap in the bottom (23) to the line style for coordinating
With.
5. the fairing of ship rudder as claimed in claim 1, it is characterised in that：Each drive mechanism include one it is removable
Dynamic mobile bar, mobile bar mobile bar are connected with adjustment plate, and mobile bar drives adjustment plate to move forward and backward under drive mechanism driving,
Each flexible contact plate is separately fixed in each adjustment plate, is moved with adjustment plate, arranges and supply mobile bar on rudder horn
The perforate for passing through and the groove for wearing collection for mobile bar, arrange sealing device in the tapping of rudder horn, to ensure in rudder horn
In under water when, water will not by perforate enter rudder horn in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281811.8A CN104875871B (en) | 2015-05-28 | 2015-05-28 | Rectifying device of rudder for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281811.8A CN104875871B (en) | 2015-05-28 | 2015-05-28 | Rectifying device of rudder for ship |
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| Publication Number | Publication Date |
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| CN104875871A CN104875871A (en) | 2015-09-02 |
| CN104875871B true CN104875871B (en) | 2017-03-22 |
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| CN201510281811.8A Active CN104875871B (en) | 2015-05-28 | 2015-05-28 | Rectifying device of rudder for ship |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143272B (en) * | 2019-05-30 | 2021-10-01 | 中国人民解放军海军工程大学 | Device for controlling clearance flow of combined control surface of aircraft |
| CN113650772B (en) * | 2021-09-22 | 2022-07-12 | 哈尔滨工程大学 | Ship jet flow rudder with air curtain noise reduction function |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87209395U (en) * | 1987-06-20 | 1988-02-17 | 武汉水运工程学院 | Rudder with turbulent flow mechanism |
| CN1032798C (en) * | 1993-02-03 | 1996-09-18 | 江西省交通科学技术研究所 | Non-symmetrical guiding hole rudder |
| KR100421620B1 (en) * | 2001-11-29 | 2004-03-11 | 대우조선해양 주식회사 | A control device for restraining a rudder from gap cavitation |
| JP4936798B2 (en) * | 2006-06-09 | 2012-05-23 | ジャパン・ハムワージ株式会社 | Mariner type high-lift two-wheel rudder device |
| KR100735724B1 (en) * | 2006-06-15 | 2007-07-06 | 김효철 | Ships rudder with double acting gap flow stopper between fixed and movable part |
| CN101186233B (en) * | 2007-12-19 | 2011-05-11 | 沪东中华造船(集团)有限公司 | Method for reducing vessels stern semi-balance suspension rudder blade surface cavitation |
| KR100979142B1 (en) * | 2008-03-05 | 2010-08-31 | 삼성중공업 주식회사 | The Structure for suppression of rudder gap cavitation inception and the Vessel thereof |
| CN204688397U (en) * | 2015-05-28 | 2015-10-07 | 上海船舶研究设计院 | A kind of rectifying device of boats and ships rudder |
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2015
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