CN105539757A - External-opened retractable bilge keel - Google Patents
External-opened retractable bilge keel Download PDFInfo
- Publication number
- CN105539757A CN105539757A CN201510974534.9A CN201510974534A CN105539757A CN 105539757 A CN105539757 A CN 105539757A CN 201510974534 A CN201510974534 A CN 201510974534A CN 105539757 A CN105539757 A CN 105539757A
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- CN
- China
- Prior art keywords
- bilge keel
- bilge
- output shaft
- roll
- shell structure
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- 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
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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
Abstract
The invention relates to an external-opened retractable bilge keel. A main body structure comprises two parts of a fixed shell structure (2) and a rotary shell structure (1), wherein after being closed, the two parts are in a flat shape; front and tail ends of the main body structure is shaped like a streamline; the fixed shell structure (2) is fixedly connected with a bilge strake (3); the rotary shell structure (1) is connected with the fixed shell structure (2) through a rotating shaft system; and the rotating shaft system is used for opening and closing the shell structure (1). The external-opened retractable bilge keel provided by the invention is advantaged in that the rolling damping of a ship can be increased, the rolling of the ship is effectively reduced and the rolling stability is enhanced.
Description
Technical field
The present invention relates to a kind of marine equipment reducing rolling, can change the bilge keel of shape according to sea situation change, namely subtracting for ship Counter-Flooding a kind of extratensive type shaking overturn-preventing can folding bilge keel.
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 not obvious affect ship resistance and performance while 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; Can folding bilge keel by installing this cover extratensive type additional, boats and ships can be made flexible and efficiently to realize controlling the object of rolling, tackle the change of various complicated sea situation and loading conditions.Technical scheme of the present invention is as follows:
A kind of extratensive type can folding bilge keel, agent structure comprises stationary housing structure (2) and roll-shell structure (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); Rotating shaft system comprises input shaft (5), output shaft (6) and finishing bevel gear cuter (7), and output shaft (6) is positioned near hull side, as the rotary middle spindle of roll-shell structure (1); Input shaft (5) is transversely arranged in the chamber of stationary housing structure (2), one end is through bilge strake (3), be connected to the motor of hull interior, the other end drives output shaft (6) vertical with it by finishing bevel gear cuter (7); Input shaft (5) is connected with stationary housing structure (2) by bearing with output shaft (6).
Preferably, outstanding tubular construction is provided with between stationary housing structure (2) and roll-shell structure (1), for holding output shaft (6) and finishing bevel gear cuter (7), described output shaft (6) is fixed together in the gap position of outstanding tubular construction and described roll-shell structure (1), makes roll-shell structure (1) realize rotating under the drive of output shaft (6); Fixing clam shell design (2) and rotate clam shell design (1) chamber in be provided with brace panel (9).Brace panel offers lightening hole.
Employing the invention has the beneficial effects as follows:
1. 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. 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.
4. extratensive type can folding bilge keel, after deployment, adds payload space, but does not substantially change the width that bilge keel stretches out hull, greatly can reduce the risk that the accidents such as collision of the tactile end occur like this.
Accompanying drawing explanation
Fig. 1 is that a kind of extratensive type of the present invention can folding bilge keel overall construction drawing;
Fig. 2 is that a kind of extratensive type of the present invention can the complete folded state diagram of folding bilge keel;
Fig. 3 is that a kind of extratensive type of the present invention can the complete unfolding state figure of folding bilge keel
Fig. 4 is that a kind of extratensive type of the present invention can the constructional drawing of folding bilge keel rotating shaft system;
Fig. 5 is that a kind of extratensive type of the present invention can the control flow schematic diagram of folding bilge keel;
1. roll-shell structure 2. stationary housing structure 3. bilge strake 4. cladding plate 5. input shaft 6. output shaft 7. finishing bevel gear cuter 8. bearing 9. brace panel
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.
Now again in conjunction with above-mentioned each accompanying drawing, propose a kind of extratensive type can folding bilge keel at the case study on implementation of a kind of arrangement of boats and ships.
This device and extratensive type can folding bilge keels, are mainly used in various ships, for suppressing rolling under Various Complex state.
As shown in Figures 1 to 4, a kind of extratensive type of the present invention can folding bilge keel, and agent structure is made up of stationary housing structure 2 and roll-shell structure 1 two parts, and described stationary housing structure 2 and roll-shell structure 1 are platypelloid type enclosed construction symmetrical 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 bilge keel base portion can realize modularization batch manufacturing, reduces laid down cost.Stationary housing structure 2 is fixedly connected on bilge strake 3, and perpendicular to bilge strake 3, junction welding cladding plate, in this side, outstanding tubular construction is set, as the rotating shaft that axle sleeve parcel is inner, be provided with gap in position, be connected with the rotating shaft of the inside for roll-shell structure 1, but the waterproof in these positions will be ensured; Described roll-shell structure 1 is positioned at top, is connected with the rotating shaft system in the tubular construction of stationary housing structure 2 by rotating shaft system.In the enclosed construction of stationary housing structure 2 and roll-shell structure 1, brace panel 9 is set, in order to strengthen structural strength.As a kind of way of realization of this patent, the thickness of bilge keel is less, and quality own is little, does not need to arrange lightening hole on brace panel.Because bilge keel centre portion cross-sectional plane is identical, therefore brace panel shape is identical, can build in batches.If bilge keel quality is comparatively large certainly, under the prerequisite of proof strength, lightening hole can be set on brace panel 9.
Rotating shaft system is made up of input shaft 5, output shaft 6.Output shaft 6, near hull side, is positioned at tubular and gives prominence to structure, as the rotary middle spindle of roll-shell structure 1.Input shaft 6 is transversely arranged in the chamber of stationary housing structure 2, and one end, through bilge strake 3, is connected to the driving engine of hull interior; The other end drives output shaft 6 vertical with it by finishing bevel gear cuter 7; On input shaft 5, output shaft 6, at location arrangements bearing 8 as shown in the figure, in order to the position of supporting, anchor shaft system, described bearing 8 will be fixed together with the outstanding tubular construction in stationary housing structure 2.Described output shaft 6 will be fixed together in the gap position of tubular construction and described roll-shell structure 1, makes roll-shell structure 1 realize rotating under the drive of output shaft 6.
As shown in Figure 5, extratensive type of the present invention can folding 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 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 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 index in angular acceleration three parameters (is such as set as 1/4 of boats and ships natural period) and continues 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 roll-shell structure 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 each index in roll angle, cireular frequency, angular acceleration three parameters (is such as set as 1/4 of boats and ships natural period) in setting-up time, ship rolling is very little, the then roll-shell structure 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 (4)
1. an extratensive type can folding bilge keel, agent structure comprises stationary housing structure (2) and roll-shell structure (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).Rotating shaft system comprises input shaft (5), output shaft (6) and finishing bevel gear cuter (7), and output shaft (6) is positioned near hull side, as the rotary middle spindle of roll-shell structure (1); Input shaft (5) is transversely arranged in the chamber of stationary housing structure (2), one end is through bilge strake (3), be connected to the motor of hull interior, the other end drives output shaft (6) vertical with it by finishing bevel gear cuter (7); Input shaft (5) is connected with stationary housing structure (2) by bearing with output shaft (6).
2. bilge keel according to claim 1, it is characterized in that, outstanding tubular construction is provided with between stationary housing structure (2) and roll-shell structure (1), for holding output shaft (6) and finishing bevel gear cuter (7), described output shaft (6) is fixed together in the gap position of outstanding tubular construction and described roll-shell structure (1), makes roll-shell structure (1) realize rotating under the drive of output shaft (6).
3. bilge keel 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 (9).
4. bilge keel according to claim 4, is characterized in that, brace panel offers lightening hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974534.9A CN105539757B (en) | 2015-12-22 | 2015-12-22 | A kind of retractable bilge keelson of extratensive type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974534.9A CN105539757B (en) | 2015-12-22 | 2015-12-22 | A kind of retractable bilge keelson of extratensive type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105539757A true CN105539757A (en) | 2016-05-04 |
| CN105539757B CN105539757B (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510974534.9A Expired - Fee Related CN105539757B (en) | 2015-12-22 | 2015-12-22 | A kind of retractable bilge keelson of extratensive type |
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Cited By (10)
| 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 |
| CN106428452A (en) * | 2016-09-19 | 2017-02-22 | 哈尔滨工程大学 | Dual-purpose fin stabilizer used at zero speed and certain speed |
| CN106995044A (en) * | 2017-04-19 | 2017-08-01 | 河北工程大学 | A kind of flexible bilge keelson system of gear driving |
| 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 |
| CN107089306A (en) * | 2017-04-19 | 2017-08-25 | 河北工程大学 | A kind of flexible bilge keelson system of hydraulic-driven |
| CN107117271A (en) * | 2017-06-09 | 2017-09-01 | 河北工程大学 | A kind of control method of the flexible bilge keelson system of hydraulic-driven |
| CN109204750A (en) * | 2018-11-07 | 2019-01-15 | 西北工业大学 | Submarine navigation device paddle-type air promotes and gliding mechanism |
| CN109204751A (en) * | 2018-11-07 | 2019-01-15 | 西北工业大学 | Promoted and glided based on the submarine navigation device paddle-type air that water resistance freely folds mechanism |
| CN113401326A (en) * | 2021-07-15 | 2021-09-17 | 大连海事大学 | Pneumatic driving marine fishtail rudder |
| CN113401327A (en) * | 2021-07-15 | 2021-09-17 | 大连海事大学 | Turbulence rudder for cooperative control ship |
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| CN205440803U (en) * | 2015-12-28 | 2016-08-10 | 天津大学 | Outer type bilge keelson that can open and shut of opening |
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Patent Citations (11)
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| US4378748A (en) * | 1982-01-18 | 1983-04-05 | Joel Kurtz | Sailboat keel apparatus |
| WO1987000136A1 (en) * | 1985-07-05 | 1987-01-15 | Edward Howell Marr | Splitwing keel |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106428452A (en) * | 2016-09-19 | 2017-02-22 | 哈尔滨工程大学 | Dual-purpose fin stabilizer used at zero speed and certain speed |
| 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 |
| CN106995044A (en) * | 2017-04-19 | 2017-08-01 | 河北工程大学 | A kind of flexible bilge keelson system of gear driving |
| 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 |
| CN107089306A (en) * | 2017-04-19 | 2017-08-25 | 河北工程大学 | A kind of flexible bilge keelson system of hydraulic-driven |
| CN107117271A (en) * | 2017-06-09 | 2017-09-01 | 河北工程大学 | A kind of control method of the flexible bilge keelson system of hydraulic-driven |
| CN109204750A (en) * | 2018-11-07 | 2019-01-15 | 西北工业大学 | Submarine navigation device paddle-type air promotes and gliding mechanism |
| CN109204751A (en) * | 2018-11-07 | 2019-01-15 | 西北工业大学 | Promoted and glided based on the submarine navigation device paddle-type air that water resistance freely folds mechanism |
| CN109204750B (en) * | 2018-11-07 | 2020-06-16 | 西北工业大学 | Paddle type propelling and gliding mechanism of underwater vehicle |
| CN113401326A (en) * | 2021-07-15 | 2021-09-17 | 大连海事大学 | Pneumatic driving marine fishtail rudder |
| CN113401327A (en) * | 2021-07-15 | 2021-09-17 | 大连海事大学 | Turbulence rudder for cooperative control ship |
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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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Inventor after: Du Zunfeng Inventor after: Zhu Haiming Inventor after: Yu Xinping Inventor before: Zhu Haiming Inventor before: Du Zunfeng Inventor before: Yu Xinping |
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Granted publication date: 20171226 Termination date: 20201222 |