CN203228914U - Initiatively separating type bulbous bow - Google Patents
Initiatively separating type bulbous bow Download PDFInfo
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- CN203228914U CN203228914U CN2013201122967U CN201320112296U CN203228914U CN 203228914 U CN203228914 U CN 203228914U CN 2013201122967 U CN2013201122967 U CN 2013201122967U CN 201320112296 U CN201320112296 U CN 201320112296U CN 203228914 U CN203228914 U CN 203228914U
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- bulbous bow
- strength
- outside plate
- low
- main body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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Abstract
The utility model provides an initiatively separating type bulbous bow which comprises a bulbous bow body, wherein high-strength materials are installed on the connection portion of an outer board of the bulbous bow and an outer board of a main boat body, the high-strength materials are low-ally high-strength metal materials with yield strength not less than 390 Mpa, the yield strength of the low-ally high-strength metal materials is larger than that of materials of the adjacent outer board of the main board body and the adjacent outer board of the bulbous bow, and the thickness of the low-ally high-strength metal materials is smaller than that of the materials of the adjacent outer board of the main board body and the adjacent outer board of the bulbous bow. The initiatively separating type bulbous bow can reduce damage to a collided boat body during collision of boats.
Description
Technical field
The utility model relates to a kind of ship components, is specifically related to a kind of active divergence type bulbous bow.
Background technology
The bulbous bow structure has original benefit for the viscous pressure resistance aspect of the wave making resistance that reduces high-speed ship and low speed boats and ships, for a long time, is adopted by a large amount of ship design persons, particularly on the design of box ship.Yet the part of the bulbous bow outstanding hull that is ship bow part, the length of stretching out is very long, in the way of navigation, if it comes in contact with other boats and ships, may embed among the other side's the hull, causes the leakage of the other side's Ship's Cargo.Boats and ships for class dangerous freights such as oil carrier, chemical carrier and loaded with nuclear fuel if the cabin is crashed through, will inevitably cause the leakage of dangerous freight, and this type of accident tends to cause catastrophic consequence.
Conventional method, can thrust collided ship oceangoing ship topside and then cause being collided the problem that ship's space breaks in order to solve the above-mentioned bulbous bow that stretches out, what people considered mainly is by reducing the strength and stiffness of bulbous bow structure, make the bulbous bow structure that bigger distortion can take place, reduce the contact force of collision, make the bulbous bow structure absorb more collision energy.The patented method that proposes as following patent documentation:
1.US4323026 2.JP8164887 3.DE200510028331
On the one hand; because the rigidity of bulbous bow is generally speaking much larger than by the rigidity of colliding ship topside; by changing version or the size of bulbous bow; make its rigidity less than by the rigidity of colliding ship topside, be implemented in bulbous bow in the collision process initiatively the crash protection method of deformation failure implement unusual difficulty.Another aspect, because the bulbous bow structure need be born complicated wave load, if only from the crash protection angle, the intensity that merely reduces the bulbous bow structure can cause its ability of bearing conventional wave load to descend.The 3rd aspect, if reduce the intensity of bulbous bow, the bulbous bow structure is easy to generate nonvolatil plastic deformation under the load-up condition of routine so, influences the usability of bulbous bow.
Another existing ship collision means of defence that the patent No.: JP2004314825 is related, this method is in order to reduce the transverse strength of bulbous bow, make bulbous bow flexural deformation easily under the transverse load condition, adopted the material of the bigger low yield strength of plastic strain to replace the bulbous bow outside plate material of part, this method is by replacing with bulbous bow part outside plate material the lower material of yield strength or yield stress less than the low yield limit material of 235MPa, make boats and ships in non-perpendicular collision process, bulbous bow can occur bending and deformation than being easier under the moment of flexure effect, distortion by bulbous bow absorbs more collision energy, reduces the damage that bulbous bow causes the other side's boats and ships topside.But this method has following deficiency:
1, the part material is replaced with the material of low yield strength, reduced the structural strength of bulbous bow, can reduce the ability that the bulbous bow structure is born external load inevitably.
2, the part material is replaced with the material of low yield strength, reduced the structural strength of bulbous bow, bulbous bow is easy to generate expendable plastic deformation under external load function.
3, because the strain of ordinary low-carbon steel breaking limit is very big, after the bulbous bow end construction destroyed, the outstanding structure of bulbous bow still existed, and can not separate with main body, still can cause follow-up damage to the other side's boats and ships in the collision process.
Conventional analysis has the boats and ships of bulbous bow and the collision problem of other boats and ships, supposes all that generally other boats and ships are static, and the boats and ships that have bulbous bow initiatively clash into a kind of like this crash scenario of other boats and ships.But this crash scenario does not meet reality.In the actual collision case, two ships that generally speaking bump have certain speed of a ship or plane.
The utility model content
The purpose of this utility model is to provide a kind of active divergence type bulbous bow, make in the process that bumps with other boats and ships, the high strength material of bulbous bow and main body junction can take place initiatively to destroy, destruction by this kind high strength material, make bulbous bow separate with main body, avoid bulbous bow to be embedded into by in the cabin of collision boats and ships, thereby greatly prevented from having been prevented the leakage of objectionable impurities by the destruction of collision ship's space.
The utility model solves above-mentioned technical matters by such technical scheme: a kind of active divergence type bulbous bow, comprise bulbous bow, and described bulbous bow and main body connecting portion are equipped with the high strength material that is complementary with the connecting portion shape.
Further improve being, at bulbous bow outside plate and main body outside plate connecting portion, described high strength material is installed.
Further improve and be that described high strength material is the low-alloy high-strength metallic material.
Further improve and be that the yield strength value of described low-alloy high-strength metallic material is not less than 390MPa.
Further improve and be that the yield strength of described low-alloy high-strength metallic material is greater than the main body outside plate material that is adjacent and bulbous bow outside plate YIELD STRENGTH.
Further improve and be, the thickness of described low-alloy high-strength metallic material is less than the thickness of the main body outside plate that is adjacent and bulbous bow outside plate, and the center thickness of described low-alloy high-strength metallic material is less than this low-alloy high-strength metallic material and the main body outside plate and the bulbous bow outside plate junction thickness that are adjacent, and smooth connection is adopted in described low-alloy high-strength metallic material and the main body outside plate that is adjacent and bulbous bow outside plate junction.
Further improve being, at bulbous bow outside plate and main body outside plate connecting portion, adopt weld, bonding or inlay installs described low-alloy high-strength metallic material.
The utlity model has following advantage:
High strength material, generally speaking the low-intensity material of its plasticity ratio routine is poor, and fragility is better than the low-intensity material of routine, and along with the raising of intensity, the plasticity of high strength material reduces, and the fragility feature is more and more obvious.And high strength material can rupture under certain strained situation that is lower than conventional low-intensity material, and the crackle expansion is very fast.The utility model uses this brittle fracture character of high strength material, under the prerequisite that does not reduce the bulbous bow structural strength, utilizes the destruction of high strength material, realizes that the control bulbous bow separates with main hull structure, reaches the purpose of ship collision protection.
(1) replacement of bulbous bow place material is to carry out under the condition that does not reduce the intensity of bulbous bow own.
(2) prior art be by the nose bow construction of managing to concede points can occurrence of large-area distortion, absorb the kinetic energy of ship collision by the distortion of bulbous bow structure, and the device in the utility model is by bulbous bow is fractureed, reduce the length of bulbous bow, realize the protection of colliding thereby reduce this aspect of possibility that the bulbous bow stretch out pierces through the cargo hold bulkhead of the other side's boats and ships.
(3) (patent No.: be by using the lower metallic material of yield strength JP2004314825), the nose bow construction of managing to concede points occured bending and deformation in colliding prior art easily, and the flexural deformation by the bulbous bow structure reduces impact contact force.And the device in the utility model is by bulbous bow being fractureed, reduce the length of bulbous bow, realizes the protection of colliding thereby reduce this aspect of possibility that the bulbous bow that stretches out pierces through the cargo hold bulkhead of the other side's boats and ships.
Description of drawings
The scheme drawing of a kind of active divergence type of Figure 1A bulbous bow structure;
The scheme drawing of a kind of active divergence type of Figure 1B bulbous bow structure;
Fig. 2 A is corresponding to the scheme drawing of the A-A horizontal section of Figure 1A;
Fig. 2 B is corresponding to the scheme drawing of the A-A horizontal section of Figure 1B;
Fig. 3 A is corresponding to the scheme drawing of the B-B horizontal section of Figure 1A;
Fig. 3 B is corresponding to the scheme drawing of the B-B horizontal section of Figure 1B;
Fig. 4 is divergence type bulbous bow structure level C-C generalized section initiatively;
Fig. 5 is the horizontal C-C section of divergence type bulbous bow structure initiatively, D zone partial enlarged view;
Fig. 6 ship collision scheme drawing;
Fig. 7 is divergence type bulbous bow collision effect scheme drawing initiatively;
Among the figure: 1. main body 2. by colliding ship cargo hold district 3. by the colliding ship shell
4. by colliding ship longitudinal bulkhead 5. bulbous bows 6. bulbous bow outside plates 7. high strength materials
8. main body outside plate 9. horizontal strong frame 10. horizontal frame-generics
The specific embodiment
Embodiment one:
Hereinafter will do detailed description to this active divergence type bulbous bow, and comprise and use high strength material to replace the low-carbon steel material of prior art.This high strength material has certain characteristic, and these characteristics comprise: yield strength height, tangible fragility, low breaking strain value.
Use initiatively divergence type bulbous bow at hull, can greatly reduce bulbous bow for the threat of the other side's boats and ships.In high-octane knockout process, separate with hull firmly by this section high strength material take place being destroyed realizes bulbous bow, reduce bulbous bow for the destruction of opponent vessel hull structure; In low-energy knockout process, high strength material is in the elastic range basically, and the distortion of bulbous bow can return to its original shape basically, and keeps enough integratys, to resist later bump.
Particularly referring to accompanying drawing, Figure 1A and Figure 1B are according to the scheme drawing of two kinds of designed active divergence type bulbous bow structures of technical solutions of the utility model, shown in Figure 1A and Figure 1B: wherein black region part 7 is high strength material 7, and the form of all the other structures and size can be determined according to existing Ship Construction Rules.
The principle that the thickness of high strength material 7 is replaced according to the material equal strength is determined, as: thickness of slab is that the yield strength of 18mm is the bulbous bow outside plate 6 of 235MPa under the regular situation, replacing with yield strength is the high strength material plate 7 of 690MPa, and thickness of slab can be elected (18 * 235) ÷ 690=6.13 (mm) as just can satisfy preliminary requirement of strength.
This ship rib distance is L
0, the longitudinal length of high strength material 7 can be (1%～100%) * L
0
Vertical position of high strength material 7: high strength material 7 is arranged in before the collision bulkhead, preferably be arranged in the front end of the horizontal strong frame 9 of bulbous bow inside, concrete position can be determined according to the position of transcerse bulkhead and the requirement of use, as shown in Figure 1, this high strength material 7 is arranged in the place ahead of horizontal strong frame 9.
The welding transition of high strength material 7 and conventional hull material:, to guarantee between the different-thickness plate, will seamlessly transit because the stress of the plate junction that the variation of thickness of slab causes is concentrated in order preventing, can to adopt technology such as polishing to make the weld smooth smooth.
Below be the chemical constitution of several groups of alternative low-alloy high-strength materials, but it should be noted that the alternative high strength material of the utility model is not limited to listed several groups.
Table 1: the chemical constitution percentum of several groups of low-alloy high-strength materials
Below be the mechanical property of above-mentioned several groups of alternative low-alloy high-strength materials, but it should be noted that the alternative high strength material of the utility model is not limited to listed several groups.
Table 2: the mechanical property of several groups of low-alloy high-strength materials
Below be several alternative solder flux and welding methodes that are applicable to the above-mentioned high strength material of welding, but it should be noted that alternative solder flux and the welding method for the welded high-strength material of the utility model is not limited to listed several.
Table 3: selectable prior art solder flux
Select above-mentioned one group of low-alloy high-strength material and corresponding welding method, and use above-mentioned installation method, those of ordinary skills to know and realize technical scheme described in the utility model easily.
Embodiment two:
For realizing the described technical scheme of this patent, a kind of more succinct replacement scheme is: with low-alloy high-strength material solder flux main body outside plate and bulbous bow outside plate are linked together.Because solder flux itself has had the various mechanical properties of low-alloy high-strength material, so, can not need to select suitable low-alloy high-strength material fully, do not need to make moulding yet, can play initiatively fracture property of identical fragility but directly will have the main body outside plate now with low-alloy high-strength material solder flux with bulbous bow outside plate weld together.
Below be alternative several groups of low-alloy high-strength material solder flux of the present utility model, but it should be noted that the alternative low-alloy high-strength material of the utility model solder flux is not limited to listed several groups.
Table 4: the chemical constitution percentum of several groups of low-alloy high-strength material solder flux of the present utility model
Table 5: the mechanical property of above-mentioned several low-alloy high-strength material solder flux correspondences of the present utility model
| Group | Yield strength/MPa | Tensile strength/MPa | Percentage elongation/% |
| 1 | ≥400 | 490～620 | ≥20 |
| 2 | ≥470 | 550～690 | ≥19 |
| 3 | ≥610 | 690～830 | ≥16 |
| 4 | ≥680 | 760～900 | ≥15 |
Select arbitrary group of above-mentioned low-alloy high-strength material solder flux of the present utility model, and use above-mentioned installation method, those of ordinary skills to know and realize technical scheme described in the utility model easily.
Embodiment three:
At bulbous bow outside plate and main body outside plate connecting portion, also described low-alloy high-strength metallic material can be installed partly.As shown in Figure 1B, the top and the bottom of described low-alloy high-strength metallic material adopt the arranged in dislocation mode also can, the A-A of Fig. 2 B has shown clearly that to cutaway view the top material is that low-alloy high-strength metallic material lower part material is existing bulbous bow outside plate material; At bulbous bow outside plate and main body outside plate connecting portion, also can adopt the mode of at interval described low-alloy high-strength metallic material being installed, not shown.
As Fig. 6, active divergence type bulbous bow 5 according to above-mentioned method manufacturing, when ship collision takes place, bulbous bow 5 with come in contact by colliding ship cargo hold district 2, because there is certain speed of a ship or plane in main body 1, bulbous bow 5 can be made being deformed by colliding ship shell 3 of cargo hold district 2 by the topside in colliding ship cargo hold district 2 by bump.Owing to also had certain speed forward by colliding ship cargo hold district 2, along by the direct of travel in colliding ship cargo hold district 2, bulbous bow 5 with had relative motion by the topside in colliding ship cargo hold district 2.Because bulbous bow 5 is embedded into by among the colliding ship shell 3, relative sport causes by 3 pairs of bulbous bows 5 of colliding ship shell a push effect being arranged on the one hand; Make bulbous bow 5 bear huge moment of flexure and horizontal shearing; On the other hand, because there is sizable friction force in bulbous bow 5 and existed relative motion between the colliding ship shell 3 between the two, the effect of friction force is to make bulbous bow 5 structures bear very big shearing.
When the energy that collides is bigger, because the plate at high strength material 7 places is thinner than adjacent sheet metal thickness, the stress amplitude ratio of this position is bigger, when the stress of this position reaches the fracture stress of this high strength material, the structure at this place ruptures, high strength material 7 structures are destroyed, and the tip of the bulbous bow 5 of collision boats and ships 1 realizes separating with the main hull structure of collision boats and ships.
As Fig. 7, since main body 1 with still existed by the relative motion in colliding ship cargo hold district 2, the front end of bulbous bow 5 can be under by the effect of colliding ship shell 3, along with being moved together by colliding ship shell 3, main body outside plate 8 with main body 1 breaks away from then, thereby realizes that bulbous bow 5 separates with the main body of main body 1.
If this moment, also there was the bigger speed of a ship or plane in main body 1, move forward, continue to act on by colliding ship cargo hold district 2.This time, because the contraction in length of bulbous bow 5, and the increase of the area of two ship contact interfaces, the front end of bulbous bow 5 embeds and is reduced greatly by the possibility in colliding ship cargo hold district 2, thereby can avoid the destruction of collided vessel oceangoing ship longitudinal bulkhead 4, play the effect of collision protection.
The above only is preferred embodiments of the present utility model; protection domain of the present utility model is not limited with above-mentioned embodiment; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (7)
1. an active divergence type bulbous bow comprises bulbous bow, and it is characterized in that: described bulbous bow and main body connecting portion are equipped with the high strength material that is complementary with the connecting portion shape.
2. active divergence type bulbous bow as claimed in claim 1 is characterized in that: at bulbous bow outside plate and main body outside plate connecting portion, described high strength material is installed.
3. active divergence type bulbous bow as claimed in claim 2, it is characterized in that: described high strength material is the low-alloy high-strength metallic material.
4. active divergence type bulbous bow as claimed in claim 3, it is characterized in that: the yield strength value of described low-alloy high-strength metallic material is not less than 390MPa.
5. active divergence type bulbous bow as claimed in claim 3, it is characterized in that: the yield strength of described low-alloy high-strength metallic material is greater than the main body outside plate material that is adjacent and bulbous bow outside plate YIELD STRENGTH.
6. active divergence type bulbous bow as claimed in claim 3, it is characterized in that: the thickness of described low-alloy high-strength metallic material is less than the thickness of the main body outside plate that is adjacent and bulbous bow outside plate, and the center thickness of described low-alloy high-strength metallic material is less than this low-alloy high-strength metallic material and the main body outside plate and the bulbous bow outside plate junction thickness that are adjacent, and smooth connection is adopted in described low-alloy high-strength metallic material and the main body outside plate that is adjacent and bulbous bow outside plate junction.
7. active divergence type bulbous bow as claimed in claim 3 is characterized in that: at bulbous bow outside plate and main body outside plate connecting portion, adopt welding, bonding or inlay that described low-alloy high-strength metallic material is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201122967U CN203228914U (en) | 2013-03-12 | 2013-03-12 | Initiatively separating type bulbous bow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201122967U CN203228914U (en) | 2013-03-12 | 2013-03-12 | Initiatively separating type bulbous bow |
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| Publication Number | Publication Date |
|---|---|
| CN203228914U true CN203228914U (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201122967U Expired - Lifetime CN203228914U (en) | 2013-03-12 | 2013-03-12 | Initiatively separating type bulbous bow |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723240A (en) * | 2014-01-27 | 2014-04-16 | 上海交通大学 | Bulbous bow assembly |
| CN105644716A (en) * | 2014-11-10 | 2016-06-08 | 中集船舶海洋工程设计研究院有限公司 | Container ship |
-
2013
- 2013-03-12 CN CN2013201122967U patent/CN203228914U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723240A (en) * | 2014-01-27 | 2014-04-16 | 上海交通大学 | Bulbous bow assembly |
| CN105644716A (en) * | 2014-11-10 | 2016-06-08 | 中集船舶海洋工程设计研究院有限公司 | Container ship |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: JIANGSU HANTONG SHIP HEAVY INDUSTRY Co.,Ltd. Assignor: HANTONG(SHANGHAI)NEW ENERGY SHIP DESIGN R&D Co.,Ltd. Contract record no.: 2015320010079 Denomination of utility model: Manufacturing method of active separated bulbous bow Granted publication date: 20131009 License type: Exclusive License Record date: 20150529 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151029 Address after: 226361 Tongzhou District City, Jiangsu Province, the town of Thean Hou Temple,, five Patentee after: JIANGSU HANTONG SHIP HEAVY INDUSTRY Co.,Ltd. Address before: 201203, 88, 509, 510 Darwin Road, Zhangjiang hi tech park, Shanghai, Pudong New Area, 2 Patentee before: HANTONG(SHANGHAI)NEW ENERGY SHIP DESIGN R&D Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |