CN205440803U - Outer type bilge keelson that can open and shut of opening - Google Patents
Outer type bilge keelson that can open and shut of opening Download PDFInfo
- Publication number
- CN205440803U CN205440803U CN201521127605.3U CN201521127605U CN205440803U CN 205440803 U CN205440803 U CN 205440803U CN 201521127605 U CN201521127605 U CN 201521127605U CN 205440803 U CN205440803 U CN 205440803U
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- clam shell
- shell design
- bilge
- bilge keelson
- output shaft
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Abstract
The utility model relates to an outer type bilge keelson that can open and shut of opening, the major structure is including fixed shell structure (2) and rotate shell structure (1) two parts, is the pancake behind two parts zoarium, and the head and the tail both ends are streamlined, fixed clam shell structure (2) fixed connection in bilge strake (3), rotation clam shell structure (1) be connected with fixed clam shell structure (2) through the pivot system, the pivot system is used for rotating opening and shutting of clam shell structure (1). The utility model discloses a bilge keelson can increase the rolling damping of boats and ships, reduces the rolling of boats and ships effectively, reinforcing rolling stability.
Description
Technical field
This utility model relates to a kind of shipborne equipment reducing rolling, can change the bilge keelson of shape according to sea situation change, and a kind of extratensive type i.e. covered for ship Counter-Flooding Stabilization anti-inclining can folding bilge keelson.
Background technology
The motion of swaying of boats and ships is a kind of harmful boats and ships motion, and crewman, Ship Structure, plant equipment etc. are brought adverse influence by it.Oscillation of ship motion includes rolling, pitching, yawing, surging, swaying and hangs down and swing six kinds of forms, and wherein rolling is maximum on the impact of ship performance, and pitching is taken second place.In order to slow down or reduce waving of boats and ships, stabilizer can be added on boats and ships.
According to this qualitative classification of the power constituting stabilizing moment, stabilizer can be divided into action of gravity formula, fluid dynamic action type, turning power action type three class；Passive type and active two classes can be divided into again according to control form.At present, the stabilizer that boats and ships are conventional has: bilge keelson, stabilizer, tank stabilizer, free gyroscope stabilizer, rudder stabilization device etc..Wherein, bilge keelson is because its simple in construction, cost are low, easy to maintenance, usefulness is preferably used widely, and almost every boats and ships are equipped with bilge keelson.
In general, bilge keelson is fixedly mounted at outside hull the turn of the bilge and the most vertical with bilge strake, and along a block length batten of water (flow) direction, it is simplest one passive type hydrodynamic force ship stabilizer.The length of bilge keelson is generally 1/3 to the 1/2 of captain, and width is generally the 4% to 6% of the beam, and width is typically not greater than the square frame line of midship section.
It is to utilize it to be contained on hull turn of the bilge shell to produce the additional water resistance to ship rolling, to reduce ship rolling that bilge keelson subtracts the principle shaken.
The experience optimization carrying out on yardstick to the ship of different boats and ships coefficients is often focused in existing technological improvement, and it is devoted to the improvement of simple linear end and section optimization, as: for the boats and ships that Block Coefficient is big, use long and narrow bilge keelson, simultaneously, in order to avoid bilge keelson participates in longitudinal bending, it is set to segmentation structure；For the boats and ships that Block Coefficient is little, such as fishing boat, bilge keelson is arranged on above the turn of the bilge as far as possible, short-wide, can be made into triangle to improve local strength.
The advantage of bilge keelson is: roll angle is the biggest, the most violent, and its anti-rolling effect is the best；During navigation, anti-rolling effect ratio is more preferable when berthing；Little to ship resistance, roll-resistant is bigger；Anti-rolling effect is good, simple in construction, and low cost is widely used.But, there is following defect and deficiency in existing bilge keelson version: subjects to damage；Boats and ships are produced certain ship resistance；Can only rollstabilization, it is impossible to pitching stabilization.And, being limited by bilge keelson size, subtracted the damping torque shaken limited, subtracted the ability (the reduction amplitude of oscillation) shaken limited, anti-rolling effect is typically 10%～about 20%, it is difficult to meet demand.Additionally, for the bilge keelson determined, due to fixing of bilge keelson geomery, it is impossible to dynamically adjust for the change of sea situation and the emergency of roll angle and acceleration, greatly affect its range.
Utility model content
The purpose of this utility model is the deficiency overcoming prior art to exist, it is provided that a kind of bilge keelson that can strengthen static pitching stability while not appreciably affecting ship resistance and performance.Bilge keelson of the present utility model, the bilge keelson effective area of deployed condition is double, can increase the roll damping of boats and ships, effectively reduces the rolling of boats and ships, strengthens static pitching stability；The bilge keelson monnolithic case fairing of folded state, will not too much increase ship resistance, from without significantly affecting ship resistance and performance；By install additional this set extratensive type can folding bilge keelson, boats and ships can be made flexible and efficiently to realize controlling the purpose of rolling, tackle various complicated sea situation and the change of loading conditions.The technical solution of the utility model is as follows:
A kind of extratensive type can folding bilge keelson, agent structure includes fixing shell structure (2) and roll-shell structure (1) two parts, in pancake after two parts zoarium, two ends are streamlined from beginning to end, 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 used for rotating the folding of clam shell design (1)；Rotating shaft system includes power shaft (5), output shaft (6) and bevel gear (7), and output shaft (6) is located closely adjacent to hull side, as the rotary middle spindle of roll-shell structure (1)；Power shaft (5) is transversely arranged on the intracavity of fixing shell structure (2), one end passes bilge strake (3), being connected to the motor of hull interior, the other end drives output shaft (6) normal thereto by bevel gear (7)；Power shaft (5) and output shaft (6) are connected with fixing shell structure (2) by bearing.
Preferably, it is provided with prominent tubular construction between fixing shell structure (2) and roll-shell structure (1), for accommodating output shaft (6) and bevel gear (7), described output shaft (6) is fixed together with described roll-shell structure (1) in the gap position of prominent tubular construction so that roll-shell structure (1) realizes rotating under the drive of output shaft (6)；Intracavity at fixing clam shell design (2) and rotation clam shell design (1) is provided with reinforcing plate (9).Reinforcing plate offers lightening core.
Employing the beneficial effects of the utility model are:
1. can the bilge keelson version of folding so that boats and ships are capable of tackling different navigation condition and requirement flexibly.When in the face of the situation of high sea or stability being required higher, can launch bilge keelson, increase damping, reduce rolling, strengthen stability；Collapsible bilge keelson in the situation of little stormy waves or limit irrigation, prevents from bottoming out, collision etc., and the bilge keelson profile fairing of folded state does not interferes with the rapidity of boats and ships.
2. bilge keelson agent structure is symmetrical above and below, symmetrical front and back, removes head and the tail two ends, and mid portion shape of cross section is identical.Same set of mould, in batches modularized production can be used during construction.
3. rotating shaft transmission system structure is simple and reliable, and takes full advantage of the inner space of bilge keelson enclosed construction.
4. extratensive type can folding bilge keelson, after deployment, add effective area, but the most do not change bilge keelson and stretch out the width of hull, so can be greatly reduced the risk bottoming out the accidents such as collision.
Accompanying drawing explanation
Fig. 1 is that a kind of extratensive type of the present utility model can folding bilge keelson overall construction drawing；
Fig. 2 is that a kind of extratensive type of the present utility model can folding bilge keelson completely folded state figure；
Fig. 3 is that a kind of extratensive type of the present utility model can folding bilge keelson its fully unfolded position figure；
Fig. 4 is that a kind of extratensive type of the present utility model can the structure chart of folding bilge keelson rotating shaft system；
Fig. 5 is that a kind of extratensive type of the present utility model can the control flow schematic diagram of folding bilge keelson；
1. roll-shell structure 2. fixes shell structure 3. bilge strake 4. cladding plate 5. power shaft 6. output shaft 7. bevel gear 8. bearing 9. reinforcing plate
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.Specific embodiment mode described herein is only used for explaining this utility model, is not used to limit protection domain of the present utility model.
Now in conjunction with above-mentioned each accompanying drawing, propose a kind of extratensive type can folding bilge keelson at the case study on implementation of a kind of arrangement of boats and ships.
This device i.e. extratensive type can folding bilge keelson, be mainly used in various ships, under Various Complex state suppress rolling.
As shown in Figures 1 to 4, a kind of extratensive type of the present utility model can folding bilge keelson, agent structure is by fixing shell structure 2 and roll-shell structure 1 two parts form, and described fixing shell structure 2 and roll-shell structure 1 are mutually symmetrical with platypelloid type enclosed construction.Two ends are streamlined from beginning to end, keep the streamline fairing that bilge keelson is longitudinal.Head and the tail totally 4 ends are identical up and down, can build in batches.Removing head and the tail two ends, mid portion shape of cross section is identical, and same set of mold sections can be used during construction to build.Therefore bilge keelson main part can realize modularity batch production, reduces construction cost.Fixing shell structure 2 is fixedly connected on bilge strake 3, and it is perpendicular to bilge strake 3, junction welding cladding plate, in this side, prominent tubular construction is set, as the rotating shaft within axle sleeve parcel, be provided with gap in position, be connected with the rotating shaft of the inside for roll-shell structure 1, but be to ensure that in these positions waterproof；Described roll-shell structure 1 is above, is connected with the rotating shaft system in the tubular construction of fixing shell structure 2 by rotating shaft system.Reinforcing plate 9 is set in the enclosed construction of fixing shell structure 2 and roll-shell structure 1, in order to strengthen structural strength.As a kind of way of realization of this patent, the thickness of bilge keelson is less, and quality own is little, it is not necessary to arrange lightening core in reinforcing plate.Owing to bilge keelson mid portion cross section is identical, therefore reinforcing plate shape is identical, can build in batches.If bilge keelson quality is relatively big certainly, on the premise of proof strength, lightening core can be set in reinforcing plate 9.
Rotating shaft system is made up of power shaft 5, output shaft 6.Output shaft 6, against hull side, is positioned at tubular and highlights structure, as the rotary middle spindle of roll-shell structure 1.Power shaft 6 is transversely arranged on the intracavity of fixing shell structure 2, and one end passes bilge strake 3, is connected to the electromotor of hull interior；The other end drives output shaft 6 normal thereto by bevel gear 7；On power shaft 5, output shaft 6, at location arrangements bearing 8 as depicted, in order to support, the position of fixing axle system, described bearing 8 to be fixed together with the prominent tubular construction in fixing shell structure 2.Described output shaft 6 to be fixed together with described roll-shell structure 1 in the gap position of tubular construction so that roll-shell structure 1 realizes rotating under the drive of output shaft 6.
As it is shown in figure 5, extratensive type of the present utility model can folding bilge keelson, its control system is made up of boats and ships motion 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 monitor the drinking water of boats and ships two side of a ship in real time.Dynamic parameter measurement instrument is set near boats and ships mass axis position, monitors the data such as the rolling velocity of boats and ships, angular velocity in real time.The signal of telecommunication input computer that data collection and analysis display system will monitor, it is converted into corresponding physical quantity, draws the kinestate of boats and ships accordingly, and provide the judgement that ship navigation state is good and bad, and the suggestion of bilge keelson folding, it is presented on the screen of driver's cabin intuitively.As a kind of way of realization of this patent, can automatically be manipulated by computer, assist with human pilot manual manipulation motor control system, control motor rotation, finally make bilge keelson correspondingly realize launching or folding, be automatically adjusted ship rolling.Can certainly be completely by human pilot manual manipulation electric machine control system.
When ship's navigation, boats and ships motion real-time monitoring system monitors ship rolling angle, angular velocity, angular acceleration etc., in conjunction with drauht, computer is inputted as parameter, check vessel stability changes, if roll angle, angular velocity, any one index in three parameters of angular acceleration (is such as set as the 1/4 of the boats and ships natural period) persistently beyond a certain secure threshold (such as angle threshold is set to 10 degree) within the setting time, judge that ship rolling motion is bigger, and data collection and analysis display system can send alarm to driver's cabin, and result is shown on screen.The roll-shell structure of motor control system Automatic-expanding bilge keelson subsequently, as it is shown on figure 3, increase bilge keelson effective area, thus increases roll damping, suppresses rolling.If each index in roll angle, angular velocity, three parameters of angular acceleration (is such as set as the 1/4 of the boats and ships natural period) within the setting time and is consistently less than a certain secure threshold (such as angle threshold is set to 5 degree), ship rolling is the least, the then roll-shell structure of motor control system auto-folder bilge keelson, as shown in Figure 2.
For navigating by water in the case of limit irrigation or other particular/special requirements, need to fold (or expansion) bilge keelson, can be by driver's Non-follow control bilge keelson folding.
Above-described; it is only in order to explain preferred embodiment of the present utility model, is not intended to according to this this utility model be made any pro forma restriction, then; all have any modification or change made under identical creation spirit, all must be included in this utility model scope of the claims.
Claims (4)
1. an extratensive type can folding bilge keelson, agent structure includes fixing clam shell design (2) and rotates clam shell design (1) two parts, it is characterized in that, in pancake after two parts zoarium, two ends are streamlined from beginning to end, fixing clam shell design (2) is fixedly connected on bilge strake (3), covering plate it is fixed with in junction, described rotation clam shell design (1) is connected with fixing clam shell design (2) by rotating shaft system, and rotating shaft system is used for rotating the folding of clam shell design (1)；Rotating shaft system includes power shaft (5), output shaft (6) and bevel gear (7), and output shaft (6) is located closely adjacent to hull side, as the rotary middle spindle rotating clam shell design (1)；Power shaft (5) is transversely arranged on the intracavity of fixing clam shell design (2), one end passes bilge strake (3), being connected to the motor of hull interior, the other end drives output shaft (6) normal thereto by bevel gear (7)；Power shaft (5) and output shaft (6) are connected with fixing clam shell design (2) by bearing.
Bilge keelson the most according to claim 1, it is characterized in that, it is provided with prominent tubular construction between fixing clam shell design (2) and rotation clam shell design (1), for accommodating output shaft (6) and bevel gear (7), described output shaft (6) is fixed together with described rotation clam shell design (1) in the gap position of prominent tubular construction so that rotates clam shell design (1) and realizes rotating under the drive of output shaft (6).
Bilge keelson the most according to claim 1, it is characterised in that the intracavity at fixing clam shell design (2) and rotation clam shell design (1) is provided with reinforcing plate (9).
Bilge keelson the most according to claim 3, it is characterised in that offer lightening core in reinforcing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521127605.3U CN205440803U (en) | 2015-12-28 | 2015-12-28 | Outer type bilge keelson that can open and shut of opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521127605.3U CN205440803U (en) | 2015-12-28 | 2015-12-28 | Outer type bilge keelson that can open and shut of opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205440803U true CN205440803U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521127605.3U Expired - Fee Related CN205440803U (en) | 2015-12-28 | 2015-12-28 | Outer type bilge keelson that can open and shut of opening |
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| Country | Link |
|---|---|
| CN (1) | CN205440803U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105539757A (en) * | 2015-12-22 | 2016-05-04 | 天津大学 | External-opened retractable bilge keel |
| CN106995044A (en) * | 2017-04-19 | 2017-08-01 | 河北工程大学 | A kind of flexible bilge keelson system of gear driving |
| CN110077545A (en) * | 2019-05-23 | 2019-08-02 | 天津大学 | A kind of extension type stabilizer |
-
2015
- 2015-12-28 CN CN201521127605.3U patent/CN205440803U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105539757A (en) * | 2015-12-22 | 2016-05-04 | 天津大学 | External-opened retractable bilge keel |
| CN106995044A (en) * | 2017-04-19 | 2017-08-01 | 河北工程大学 | A kind of flexible bilge keelson system of gear driving |
| CN110077545A (en) * | 2019-05-23 | 2019-08-02 | 天津大学 | A kind of extension type stabilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20171228 |