CN105539758A - Control method for clam-shaped bilge keel - Google Patents
Control method for clam-shaped bilge keel Download PDFInfo
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- CN105539758A CN105539758A CN201510974535.3A CN201510974535A CN105539758A CN 105539758 A CN105539758 A CN 105539758A CN 201510974535 A CN201510974535 A CN 201510974535A CN 105539758 A CN105539758 A CN 105539758A
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- clam shell
- shell design
- bilge keel
- bilge
- control method
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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
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
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- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
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Abstract
The invention relates to a control method for a clam-shaped bilge keel. A main body structure of the lam-shaped bilge keel comprises two parts of a fixed clamshell structure (2) and a rotary clamshell structure (1), wherein the rotary clamshell structure (1) is connected with the fixed clamshell structure (2) through a rotating shaft system. The control method comprises the following steps of monitoring a rolling angle, an angular velocity and an angular acceleration of a ship during ship navigation; obtaining ship draft information; checking ship stability variation; if any one of the three parameters of the rolling angle, the angular velocity and the angular acceleration continuously exceeds a corresponding safety threshold upper limit within a set time, driving the rotating shaft system by using a motor so as to unfold the rotary clamshell structure of the bilge keel; and if the three parameters of the rolling angle, the angular velocity and the angular acceleration are all continuously lower than corresponding safety threshold lower limits within a set time, driving the rotating shaft system by using the motor so as to fold the rotary clamshell structure of the bilge keel. According to the invention, the opening and closing of the bilge keel can be intelligently controlled.
Description
Technical field
The present invention relates to a kind of marine equipment reducing rolling, be specifically related to a kind ofly subtract the bilge keel shaking overturn-preventing for ship Counter-Flooding.
Background technology
Boats and ships sway motion be a kind of harmful motion of ship, it brings adverse influence to crewman, hull structure, mechanical equipment etc.Oscillation of ship motion comprises rolling, pitching, yawing, surging, swaying and hangs down swings six kinds of forms, and wherein rolling having the greatest impact to ship performance, pitching is taken second place.In order to slow down or reduce waving of boats and ships, antirolling apparatus can be added on boats and ships.
According to this qualitative classification of the power of formation balancing torque, antirolling apparatus can be divided into Action of Gravity Field formula, dynaflow action type, turning force action type three class; Passive type and active two classes can be divided into again according to control form.At present, the antirolling apparatus that boats and ships are conventional has: bilge keel, stabilizer, antirolling tank, gyroscope antirolling apparatus, rudder stabilization device etc.Wherein, bilge keel is because its structure is simple, cost is low, easy to maintenance, usefulness better and be used widely, and almost every boats and ships are all equipped with bilge keel.
In general, bilge keel is fixedly mounted on the turn of the bilge outside hull and tries one's best vertical with bilge strake, and along a block length batten of water (flow) direction, it is the simplest a kind of passive type hydrodynamic force ship stabilizer.The length of bilge keel is generally captain's 1/3 to 1/2, and width is generally 4% to 6% of the beam, and width is no more than the square frame line of midship section usually.
It is the additional water resistance utilized it to be contained in hull turn of the bilge shell produces to ship rolling that bilge keel subtracts the principle of shaking, to reduce ship rolling.
The experience optimization carried out the ship of different boats and ships coefficient on yardstick is often focused in existing technological improvement, and be devoted to simple linear end improvement and section optimization, as: for the boats and ships that block coefficient is large, adopt long and narrow bilge keel, simultaneously, in order to avoid bilge keel participates in longitudinal bending, be set to segmentation structure; For the boats and ships that block coefficient is little, as fishing boat, bilge keel is arranged on above the turn of the bilge as far as possible, short and wide, can be made into triangle to improve local strength.
The advantage of bilge keel is: roll angle is larger, Shaoxing opera is strong, and its stabilizing efficiency is better; It is better when during navigation, stabilizing efficiency ratio berths; Little to ship resistance, roll-resistant is larger; Stabilizing efficiency is good, and structure is simple, and low cost, is widely used.But there is following defect and deficiency in existing bilge keel version: subject to damage; Certain running resistance is produced to boats and ships; Can only rollstabilization, can not pitching stabilization.And by the restriction of bilge keel size, subtract the damping moment of shaking limited, subtract the ability (the reduction amplitude of oscillation) of shaking limited, stabilizing efficiency, generally about 10% ~ 20%, is difficult to satisfy the demands.In addition, for the bilge keel determined, due to fixing of bilge keel geomery, dynamic conditioning can not be carried out for the emergency of the change of sea situation and roll angle and acceleration/accel, greatly affect its range of use.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, provide a kind of when not obvious affect ship resistance and performance can strengthen the bilge keel of static pitching stability.Bilge keel of the present invention, the bilge keel payload space of deployed condition is double, can increase the rolling damping of boats and ships, effectively reduces the rolling of boats and ships, strengthens static pitching stability; The bilge keel monnolithic case fairing of folded state, too much can not increase ship resistance, thus obviously can not affect ship resistance and performance.Technical scheme of the present invention is as follows:
A kind of clamshell bilge keel control method, for the agent structure of clamshell bilge keel comprise fixing clam shell design (2) and rotate clam shell design (1) two parts, two parts zoarium is afterwards in pancake, head and the tail two ends are stream line pattern, fixing clam shell design (2) is fixedly connected on bilge strake (3), described rotation clam shell design (1) is connected with fixing clam shell design (2) by rotating shaft system, and rotating shaft system is for rotating the folding of clam shell design (1), control method is: be roll angle, cireular frequency, angular acceleration three parameters set the secure threshold upper limit and secure threshold lower limit respectively, when ship's navigation, monitoring boats and ships roll angle, cireular frequency and angular acceleration, and obtain drauht information, check Stability of Ship changes, if roll angle, cireular frequency, any one index in angular acceleration three parameters continues to exceed the corresponding secure threshold upper limit in setting-up time, then judge that ship rolling motion is larger, motor-driven rotatable shaft system is utilized to launch the rotation clam shell design of bilge keel, if roll angle, cireular frequency, angular acceleration three parameters all continue lower than corresponding secure threshold lower limit in setting-up time, then judge that ship rolling is very little, utilize the rotation clam shell design of motor-driven rotatable shaft systems fold bilge keel.
Preferably, rotating shaft system comprises at least a set of connecting gear, transmission shaft (9) and output shaft (10), transmission shaft (9) is placed in the side away from bilge strake (3) in fixing clam shell design (2), by the bearings be fixed on fixing clam shell design (2); Output shaft (10) is close and parallel with transmission shaft (9), is placed in and rotates in clam shell design (1), by being fixed on the bearings of rotating on clam shell design (2); Each cover connecting gear is arranged on different parts, connecting gear comprises input shaft (8), finishing bevel gear cuter (11) and straight gear (13), input shaft (8) is transversely arranged in the chamber of fixing clam shell design (2), one end, through bilge strake (3), is connected to the motor of hull interior; The other end drives transmission shaft (9) vertical with it by finishing bevel gear cuter (11); Transmission shaft (9) is rotated by straight gear (13) engagement driver output axle (10); Fixing clam shell design (2) and rotate clam shell design (1) chamber in be provided with brace panel (14).Brace panel (14) offers lightening hole (15).All be sealedly connected with transmission gearbox outward often overlapping connecting gear, transmission gearbox is fixed in fixing clam shell design (2).
Employing the invention has the beneficial effects as follows:
1. control method of the present invention for can the bilge keel version of folding, make boats and ships can realize tackling different sailing conditions and requirement flexibly.In the face of the situation of high sea or when requiring higher to stability, can bilge keel be launched, increase damping, reduce rolling, strengthen stability; Collapsible bilge keel in the situation or limit irrigation of little stormy waves, prevent the tactile end, collision etc., and the bilge keel profile fairing of folded state can not affect the rapidity of boats and ships.
2. the control system of integrated motion of ship real-time watch device, accurately can grasp the concrete operational configuration of boats and ships, science decision accordingly, convenient and manipulate bilge keel folding intelligently.
2. bilge keel agent structure is symmetrical up and down, and front and back are symmetrical, and removing head and the tail two ends, centre portion shape of cross section is identical.Same set of mould can be used, batch modularized production during construction.
3. rotating shaft transmission system architecture is simple and reliable, and takes full advantage of the inner space of bilge keel enclosed construction.
Accompanying drawing explanation
Fig. 1 be suitable for interior type of control method of the present invention can folding clamshell bilge keel overall construction drawing;
Fig. 2 be suitable for interior type of control method of the present invention can the complete folded state diagram of folding clamshell bilge keel;
Fig. 3 be suitable for interior type of control method of the present invention can the complete unfolding state figure of folding clamshell bilge keel
Fig. 4 be suitable for interior type of control method of the present invention can the constructional drawing of folding clamshell bilge keel rotating shaft system;
Fig. 5 be suitable for interior type of control method of the present invention can the local structural graph of folding clamshell bilge keel in driving front case position;
Fig. 6 is clamshell bilge keel control flow schematic diagram of the present invention;
1. rotate clam shell design 2. and fix transmission gearbox 7. driving front case 8. input shaft 9. transmission shaft 10. output shaft 11. finishing bevel gear cuter 12. bearing 13. straight gear 14. brace panel 15. lightening hole in the rear transmission gearbox 6. of clam shell design 3. bilge strake 4. cladding plate 5.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.Specific embodiment mode described herein only for explaining the present invention, the protection domain be not intended to limit the present invention.
Control method suitable devices of the present invention be a kind of in a type can folding clamshell bilge keel, be mainly used in various ships, for suppressing rolling under Various Complex state.
As shown in Figures 1 to 5, in this kind, type can folding clamshell bilge keel, and agent structure forms by fixing clam shell design 2 and rotating clam shell design 1 two parts, described fixing clam shell design 2 and rotate the platypelloid type enclosed construction that clam shell design 1 be symmetry mutually.Head and the tail two ends are stream line pattern, keep the streamline fairing of bilge keel longitudinal direction.Totally 4 ends are identical for head and the tail up and down, can build in batches.Removing head and the tail two ends, centre portion shape of cross section is identical, and same set of mold sections can be used during construction to build.Therefore clamshell bilge keel base portion can realize modularization batch manufacturing, reduces laid down cost.Fixing clam shell design 2 is fixedly connected on bilge strake 3, and perpendicular to bilge strake 3, junction welding cladding plate; Described rotation clam shell design 1 is positioned at top, is connected with fixing clam shell design 2 by rotating shaft system.In fixing clam shell design 2 with the enclosed construction of rotation clam shell design 1, arrange brace panel 14, in order to strengthen structural strength, reinforcement version arranges lightening hole 15, and because bilge keel centre portion cross-sectional plane is identical, therefore brace panel shape is identical, can build in batches.
Rotating shaft system is made up of input shaft 8, transmission shaft 9, output shaft 10.Input shaft 8 is transversely arranged in the chamber of fixing clam shell design 2, and one end, through bilge strake 3, is connected to the driving engine of hull interior; The other end drives transmission shaft 9 vertical with it by finishing bevel gear cuter 11; Transmission shaft 9 is positioned at fixing clam shell design 2 away from hull side, longitudinally arranges; Output shaft 10 is near transmission shaft 9, parallel with transmission shaft 9, and engage to drive by straight gear 13 at two ends and midway location and transmission shaft and rotate, transmission gearbox 5, middle transmission gearbox 6, driving front case 7 after relevant position is arranged respectively, protect gear train.Transmission gearbox and fixing clam shell design 2 are integrated, and profile is tubular, and two ends will arrange sealing arrangement, prevents seawater from entering.On input shaft 8, transmission shaft 9, output shaft 10, at location arrangements bearing 12 as shown in the figure, in order to the position of supporting, anchor shaft system, described bearing 12 will be fixed together with the shell of fixing clam shell design 2.Described output shaft 10 is fixed together with described rotation clam shell design 1, makes to rotate clam shell design 1 and realizes rotating under the drive of output shaft 10.
As shown in Figure 6, in of the present invention, type can folding clamshell bilge keel, and its control system is made up of motion of ship real-time watch device, data collection and analysis display system, motor control system.At the fluid level measuring instrument that shipboard is arranged, in order to the drinking water of Real-Time Monitoring boats and ships two side of a ship.Dynamic parameter measurement instrument is set near boats and ships mass axis position, the data such as rolling velocity, cireular frequency of Real-Time Monitoring boats and ships.The electric signal input computing machine that data collection and analysis display system will monitor, be converted into corresponding physical quantity, draw the state of kinematic motion of boats and ships accordingly, and provide the judgement of ship navigation state quality, and the suggestion of clamshell bilge keel folding, it is presented on the screen of operator's compartment intuitively.As a kind of way of realization of this patent, automatically can be manipulated by computing machine, auxiliary with navigating mate manual manipulation motor control system, control electrical motor and rotate, finally make clamshell bilge keel correspondingly realize launching or folding, automatically regulate ship rolling.Can certainly completely by navigating mate manual manipulation electric machine control system.
When ship's navigation, motion of ship real-time monitoring system monitors ship rolling angle, cireular frequency, angular acceleration etc., in conjunction with drauht, as parameters input computing machine, check Stability of Ship changes, if roll angle, cireular frequency, any one or more indexs in angular acceleration three parameters (are such as set as 1/4 of boats and ships natural period) and continue to exceed a certain secure threshold (such as angle threshold is set to 10 degree) in setting-up time, judge that ship rolling motion is larger, and data collection and analysis display system can give the alarm to operator's compartment, and result is presented on screen.The rotation clam shell design of motor control system Automatic-expanding bilge keel subsequently, as shown in Figure 3, increases bilge keel payload space, thus increases rolling damping, suppress rolling.Continue lower than a certain secure threshold (such as angle threshold is set to 5 degree) if any one or more indexs in roll angle, cireular frequency, angular acceleration three parameters (are such as set as 1/4 of boats and ships natural period) in setting-up time, ship rolling is very little, the then rotation clam shell design of motor control system auto-folder bilge keel, as shown in Figure 2.
For navigating by water under limit irrigation or other particular/special requirement situations, need folding (or expansion) bilge keel, can by the folding of chaufeur Non-follow control bilge keel.
Above-described; be only to explain preferred embodiment of the present invention, not attempt does any pro forma restriction to the present invention according to this, so; all have any modification or change done under identical creation spirit, all must be included in the protection domain of the claims in the present invention.
Claims (5)
1. a clamshell bilge keel control method, for the agent structure of clamshell bilge keel comprise fixing clam shell design (2) and rotate clam shell design (1) two parts, two parts zoarium is afterwards in pancake, head and the tail two ends are stream line pattern, fixing clam shell design (2) is fixedly connected on bilge strake (3), described rotation clam shell design (1) is connected with fixing clam shell design (2) by rotating shaft system, and rotating shaft system is for rotating the folding of clam shell design (1), control method is: be roll angle, cireular frequency, angular acceleration three parameters set the secure threshold upper limit and secure threshold lower limit respectively, when ship's navigation, monitoring boats and ships roll angle, cireular frequency and angular acceleration, and obtain drauht information, check Stability of Ship changes, if roll angle, cireular frequency, any one index in angular acceleration three parameters continues to exceed the corresponding secure threshold upper limit in setting-up time, then judge that ship rolling motion is larger, motor-driven rotatable shaft system is utilized to launch the rotation clam shell design of bilge keel, if roll angle, cireular frequency, angular acceleration three parameters all continue lower than corresponding secure threshold lower limit in setting-up time, then judge that ship rolling is very little, utilize the rotation clam shell design of motor-driven rotatable shaft systems fold bilge keel.
2. bilge keel control method according to claim 1, is characterized in that, described rotating shaft system comprises at least a set of connecting gear, transmission shaft (9) and output shaft (10).Transmission shaft (9) is placed in the side away from bilge strake (3) in fixing clam shell design (2), by the bearings be fixed on fixing clam shell design (2); Output shaft (10) is close and parallel with transmission shaft (9), is placed in and rotates in clam shell design (1), by being fixed on the bearings of rotating on clam shell design (2); Each cover connecting gear is arranged on different parts, connecting gear comprises input shaft (8), finishing bevel gear cuter (11) and straight gear (13), input shaft (8) is transversely arranged in the chamber of fixing clam shell design (2), one end, through bilge strake (3), is connected to the motor of hull interior; The other end drives transmission shaft (9) vertical with it by finishing bevel gear cuter (11); Transmission shaft (9) is rotated by straight gear (13) engagement driver output axle (10).
3. bilge keel control method according to claim 1, is characterized in that, fixing clam shell design (2) and rotate clam shell design (1) chamber in be provided with brace panel (14).
4. bilge keel control method according to claim 3, is characterized in that, brace panel (14) offers lightening hole (15).
5. bilge keel control method according to claim 1, is characterized in that, be all sealedly connected with transmission gearbox outward often overlapping connecting gear, transmission gearbox is fixed in fixing clam shell design (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974535.3A CN105539758B (en) | 2015-12-22 | 2015-12-22 | A kind of control method of clamshell bilge keelson |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974535.3A CN105539758B (en) | 2015-12-22 | 2015-12-22 | A kind of control method of clamshell bilge keelson |
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| Publication Number | Publication Date |
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| CN105539758A true CN105539758A (en) | 2016-05-04 |
| CN105539758B CN105539758B (en) | 2017-09-19 |
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| CN201510974535.3A Expired - Fee Related CN105539758B (en) | 2015-12-22 | 2015-12-22 | A kind of control method of clamshell bilge keelson |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394822A (en) * | 2016-10-21 | 2017-02-15 | 哈尔滨工程大学 | Ship retractable type bilge keel device using guide rails |
| CN107054579A (en) * | 2017-04-19 | 2017-08-18 | 河北工程大学 | A kind of control method of the flexible bilge keelson system of gear driving |
| CN107818226A (en) * | 2017-11-16 | 2018-03-20 | 中船黄埔文冲船舶有限公司 | The three-dimensional modeling method and bilge keelson structure of a kind of bilge keelson structure |
| CN111290416A (en) * | 2020-01-20 | 2020-06-16 | 郑州宇通重工有限公司 | Ship attitude control method, system, computer storage medium and ship |
| CN112744337A (en) * | 2021-03-02 | 2021-05-04 | 广东海洋大学 | Ship driving balancing device and balancing method |
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| KR20040027616A (en) * | 2004-02-17 | 2004-04-01 | 김영복 | Apparatus for controlling rolling and pitching of a ship |
| KR20100059142A (en) * | 2008-11-26 | 2010-06-04 | 삼성중공업 주식회사 | Foldable bilge keel in ship |
| KR20120008331A (en) * | 2010-07-16 | 2012-01-30 | 현대중공업 주식회사 | Anti-roll apparatus for ships and marine structure |
| KR101302210B1 (en) * | 2011-06-15 | 2013-08-30 | 삼성중공업 주식회사 | Ship with foldable bilge keel |
| CN105083466A (en) * | 2015-09-08 | 2015-11-25 | 天津大学 | Foldable bilge keel with groove-shaped base plate |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040027616A (en) * | 2004-02-17 | 2004-04-01 | 김영복 | Apparatus for controlling rolling and pitching of a ship |
| KR20100059142A (en) * | 2008-11-26 | 2010-06-04 | 삼성중공업 주식회사 | Foldable bilge keel in ship |
| KR20120008331A (en) * | 2010-07-16 | 2012-01-30 | 현대중공업 주식회사 | Anti-roll apparatus for ships and marine structure |
| KR101302210B1 (en) * | 2011-06-15 | 2013-08-30 | 삼성중공업 주식회사 | Ship with foldable bilge keel |
| CN105083466A (en) * | 2015-09-08 | 2015-11-25 | 天津大学 | Foldable bilge keel with groove-shaped base plate |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394822A (en) * | 2016-10-21 | 2017-02-15 | 哈尔滨工程大学 | Ship retractable type bilge keel device using guide rails |
| CN106394822B (en) * | 2016-10-21 | 2018-05-18 | 哈尔滨工程大学 | A kind of ship extendible bilge keelson device using guide rail |
| CN107054579A (en) * | 2017-04-19 | 2017-08-18 | 河北工程大学 | A kind of control method of the flexible bilge keelson system of gear driving |
| CN107818226A (en) * | 2017-11-16 | 2018-03-20 | 中船黄埔文冲船舶有限公司 | The three-dimensional modeling method and bilge keelson structure of a kind of bilge keelson structure |
| CN107818226B (en) * | 2017-11-16 | 2023-11-07 | 中船黄埔文冲船舶有限公司 | Three-dimensional modeling method of bilge keel structure and bilge keel structure |
| CN111290416A (en) * | 2020-01-20 | 2020-06-16 | 郑州宇通重工有限公司 | Ship attitude control method, system, computer storage medium and ship |
| CN111290416B (en) * | 2020-01-20 | 2020-11-20 | 郑州宇通重工有限公司 | Ship attitude control method, system, computer storage medium and ship |
| CN112744337A (en) * | 2021-03-02 | 2021-05-04 | 广东海洋大学 | Ship driving balancing device and balancing method |
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Address after: 300350 District, Jinnan District, Tianjin Haihe Education Park, 135 beautiful road, Beiyang campus of Tianjin University Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |
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Granted publication date: 20170919 Termination date: 20201222 |