CN210761178U

CN210761178U - Multifunctional anti-rolling lifeboat

Info

Publication number: CN210761178U
Application number: CN201920531484.0U
Authority: CN
Inventors: 孙利; 芦树平; 贺卫东; 燕家乐; 邱伟强; 刘宇辰
Original assignee: China Ship And Marine Engineering Design And Research Institute China State Shipbuilding Corp Ltd No 708 Institute
Current assignee: China Ship And Marine Engineering Design And Research Institute China State Shipbuilding Corp Ltd No 708 Institute
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-06-16
Anticipated expiration: 2029-04-18

Abstract

The utility model provides a multi-functional anti-rolling lifeboat, include: a main hull; a plurality of lifeboats; and a plurality of keel assemblies disposed on the main hull; the lifeboat frame assembly is connected with the lifeboat so as to retract the lifeboat to the boat body or release the lifeboat to the side surface of the lifeboat close to the water surface to form an anti-rolling release state. The utility model discloses a scheme is arranged to multi-functional anti-rolling lifeboat, except that lifesaving function, still can improve the big inclination stability of boats and ships as deposit buoyancy when special lifeboat is in the release state of falling the arm to slow down the roll motion response.

Description

Multifunctional anti-rolling lifeboat

Technical Field

The utility model relates to a boats and ships technical field especially relates to a multi-functional anti-rolling lifeboat.

Background

At present, for some ship types with larger displacement relative to water displacement, such as passenger ships, mail ships, roll-on-roll-off ships and scientific research ships, in order to increase the total area of rooms and the area of vehicle decks, multi-layer long decks are often designed, the total height of the continuous long decks is very high, the volume of the water part of a ship body is far larger than that of the underwater part, the center of gravity is higher, and the wind area is larger. Resulting in a design margin not very large in terms of its great roll stability and wind resistance stability. Historically, there have been many reports of overturning of large passenger ships, such as cruise ships.

For medium and large passenger ships, a certain number of lifeboats can be arranged on two sides of a ship body according to the specification requirements. Typically, such lifeboats are often equipped with a gravity arm-fall davit and then released to the surface by a winch cable. The lifeboat has single function, can be used only when the whole ship needs to be evacuated, and can not be used under normal conditions.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the above-mentioned prior art, provide a multi-functional anti-rolling lifeboat, it not only has the lifesaving function of traditional lifeboat, can also improve the wind resistance stability and the wave resistance of above-mentioned hull form in abominable sea condition.

Increasing the reserve buoyancy of a vessel when subjected to rough sea conditions is one of the most effective ways to increase vessel stability and reduce hull roll motions. Therefore, the utility model discloses a main technical scheme does: for single large passenger ships and luxurious cruise ships, the lifeboats on two sides of the single large passenger ships and the luxurious cruise ships can be used as main ship body attachments to increase the reserve buoyancy. The lifeboat keel block is provided with an L-shaped lifeboat keel block with a proper size, the lifeboat is placed to the position, close to the water surface, of the two sides of the lifeboat body by utilizing the gravity arm-falling principle, and the lifeboat and the relevant keel block are rigidly fixed through the locking mechanism.

When the ship swings left and right under the action of wind waves, the lifeboats on the two sides of the ship body enter water along with the ship body and the roll restoring moment of the ship can be increased, so that the roll movement of the ship is reduced, and the stability is improved. When the sea condition is good, the lifeboat and the boat frame can be pulled up through the winch cable, so as to avoid increasing the navigation resistance. When the escape is needed, the lifeboat can be released to a proper position under the action of the gravity inverted arm and the winch cable, and then the lifeboat is unhooked and driven away.

The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:

the utility model provides a multi-functional anti-rolling lifeboat, include:

a main hull;

a plurality of lifeboats; and

a plurality of keel assemblies disposed on the main hull;

the lifeboat frame assembly is connected with the lifeboat so as to retract the lifeboat to the boat body or release the lifeboat to the side surface of the lifeboat close to the water surface to form an anti-rolling release state.

Further, in the multifunctional anti-rolling lifeboat, a plurality of layers of cabin-dividing decks are arranged inside the lifeboat.

Further, in the multifunctional anti-rolling lifeboat, the keel assembly comprises a keel, a retractable steel cable, a fixed pulley and a winch, and the winch is connected with the top end of the keel through the retractable steel cable via the fixed pulley so as to retract or release the keel.

Further preferably, in the multifunctional anti-rolling lifeboat, the keel block is L-shaped, and the bottom end of the keel block is fixed on the lifeboat deck of the main hull through a hinge type base; the top of the keel block is provided with a lifting hook connected with the lifeboat.

Further preferably, in the multifunctional anti-rolling lifeboat, a lifeboat locking mechanism for locking the lifeboat is arranged on the long side of the boat frame.

Further preferably, in the multifunctional anti-rolling lifeboat, a davit locking mechanism for locking the davit is arranged on a lifeboat deck of the main hull.

Further preferably, in the multifunctional anti-rolling lifeboat, a davit locking state lock catch matched with the davit is arranged on the boat body.

Further, in the multifunctional roll-reducing lifeboat, in a roll-reducing released state, the lifeboat faces the water surface with the side surface rather than the bottom surface.

Further, in the multifunctional anti-rolling lifeboat, the front end and the rear end of the lifeboat are respectively provided with the keel assembly.

Further preferably, in the multifunctional roll-down lifeboat, an angle α between a keel block on the keel block assembly and a longitudinal line in the main hull is less than 90 °.

The utility model adopts the above technical scheme, compare with prior art, have following technological effect:

the utility model discloses a multi-functional anti-rolling lifeboat, except the lifesaving function, can also improve the large roll angle stationarity of boats and ships as the reserve buoyancy when the special lifeboat is in the release state of falling the arm, and slow down the roll motion response; the special lifeboat is internally provided with a plurality of layers of decks, so that the arrangement area is increased, and wave load can be better conducted; the lifeboat davit is L-shaped, and except that the davit is provided with a top hook connected with a lifeboat, the long edge of the L-shaped structure is provided with a locking mechanism for locking the lifeboat to move; in the roll-reducing release state, the lifeboat faces the water surface with the side surface but not the bottom; the lifeboat keel block is withdrawn by the scheme in a winch traction cable mode, and the lifeboat keel block limits the freedom of movement of the lifeboat keel block through a locking mechanism of a gunwale on a deck and the hinge type base of the lifeboat keel block in an anti-rolling release state.

Drawings

Fig. 1 is a schematic sectional structure view of the multifunctional anti-rolling lifeboat in an anti-rolling release state and a folding state;

fig. 2 is a schematic view of a top-down structure of the multifunctional anti-rolling lifeboat in an anti-rolling release state and a folding state;

fig. 3 is a schematic structural view of the multifunctional anti-rolling lifeboat in a life-saving release state and a folding state;

fig. 4 is a main view structure diagram of a lifeboat in the multifunctional anti-rolling lifeboat of the utility model;

fig. 5 is a top view structural diagram of a lifeboat in the multifunctional anti-rolling lifeboat of the utility model;

fig. 6 is a cross-sectional structure view of a lifeboat in the multifunctional anti-rolling lifeboat of the present invention;

fig. 7 is a schematic diagram of a motion trajectory of a davit in the multifunctional anti-rolling lifeboat of the present invention;

wherein the reference symbols are:

10-main hull, 11-lifeboat deck, 12-boarding deck; 20-lifeboat, 21-multilayer cabin deck; 30-keel block, 31-keel, 32-hinged base, 33-keel lock-out mechanism, 34-lifeboat lock-out mechanism, 35-take-up and pay-off cable, 36-fixed pulley, 37-winch, 38-keel lock-out status catch, 39-hook.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, the utility model provides a multi-functional anti-rolling lifeboat, include: a main hull 10; a plurality of lifeboats 20; and a plurality of keel assemblies 30 disposed on said main hull 10; wherein the davit assembly 30 is connected with the lifeboat 20 to retract the lifeboat 20 to the hull 10 or release the lifeboat 20 to the side surface thereof close to the water surface to form a rolling reduction release state. The multifunctional anti-rolling lifeboat can be used as reserve buoyancy to improve the large inclination angle stability of the main hull 10 and slow down the response of rolling motion when the lifeboat 20 is in an inverted arm release state, besides the lifesaving function. In the roll-off released state, the lifeboat 20 is facing the water surface with the side rather than the bottom.

As a preferred embodiment, the interior of the lifeboat 20 is provided with a multi-layered subdivision deck 21, as shown in fig. 4-6. Compared with the traditional lifeboat, the lifeboat 20 has larger scale, can bear larger water entering pressure and dynamic load action of waves and the like, and is of a totally-enclosed watertight structure. 1-2 cabin-dividing decks 21 are arranged in the lifeboat 20, so that the number of people of the lifeboat can be increased, the transverse strength of the lifeboat can be increased, and the lifeboat 20 can better bear the action of water entering pressure after being placed upside down along with the boat frame. The number of lifeboats 20 required to be configured, the dimensional specifications, need to be custom designed for different boat types. On one hand, the total number of personnel accommodated by the lifeboat meeting the standard requirement, on the other hand, the arrangement matched with the main hull 10 is considered, a certain distance is reserved from the water surface in the arm-down state, and on the strength aspect, the wave load corresponding to the underwater penetration depth of the multifunctional lifeboat under the rolling limit motion of the main hull 10 is considered.

As a preferred embodiment, as shown in fig. 1 and 3, the davit assembly includes a davit 31, a wire rope 35, a fixed pulley 36 and a winch 37, wherein the winch 37 is connected to the top end of the davit 31 through the wire rope 35 and the fixed pulley 36 to retract or release the davit 31. Specifically, the two ends of the wire rope 35 are connected to the winch 37 at the position of the knuckle point of the L-shaped keel block 31 via the fixed pulleys 36 fixed to the main hull 10. The winch 37 is arranged on the lifeboat boarding deck 12. Correspondingly, a winch 37 and a corresponding retrieval cable 35 are provided in front of and behind each lifeboat 20.

As a preferred embodiment, as shown in fig. 1, 3 and 7, the keel block 31 is L-shaped, and the bottom end of the keel block 31 is fixed on the lifeboat deck 11 of the main hull 10 through a hinged base 32; the top of the keel block 31 is provided with a hook 39 to which the lifeboat 20 is attached. So that one end of the special form of L-shaped keel block 31 is fixed to the hull deck by the hinged base and the other end pulls the lifeboat 20 by the hook 39.

As a preferred embodiment, as shown in fig. 1 and 3, the long sides of the keel block 31 are provided with lifeboat locking mechanisms 34 for locking the lifeboat 20. Specifically, the L-shaped davit 31 is provided with two lifeboat locking mechanisms 34 for restricting the rotation of the lifeboat 20 and conducting the restoring moment load of the lifeboat 20 after entering water.

As a preferred embodiment, as shown in fig. 1 and 3, a davit locking mechanism 33 for locking the davit 31 is provided on the lifeboat deck 11 of the main hull 10, and the davit locking mechanism 33 is used for defining the turning degree of freedom of the davit 20. And a hull 10 is provided with a davit locking state lock 38 engaged with the davit 31.

As a preferred embodiment, as shown in fig. 6, for each lifeboat 20, one of the davit assemblies 30 is disposed at each of the front and rear ends of the lifeboat 20, and the angle α between the davit 31 and the longitudinal line of the main hull 10 is less than 90 ° in consideration of the longitudinal load effect, specifically, the angle α between the davit 31 and the longitudinal line of the main hull 10 is 60 °.

The utility model provides a multi-functional anti-rolling lifeboat mainly has three kinds of modes, as follows respectively:

1. a retracted state: as shown in the right side of fig. 1, during normal navigation, the lifeboat 20 and the keel block 31 are in a retracted state and are fixed by the keel block storage state lock catch 38; at this time, the lifeboat latch mechanism 34 is also in a locked state.

2. The lifesaving release state: as shown in the right side of fig. 2, when the whole person is evacuated, after the person enters the lifeboat 20 through the boarding deck 12, the lifeboat locking mechanism 34 is released, then the boat frame storage state lock catch 38 is released, the lifeboat 20 and the boat frame 31 overturn towards the outer side of the main hull 10 under the action of gravity, and are slowly released to the vicinity of the water surface under the action of the cable 35 drawn by the winch 37, as shown in the left side of fig. 2; the hook 39 between the lifeboat 20 and the keel 31 is released and the lifeboat 20 is driven away.

3. Anti-rolling release state: as shown in the left side of fig. 1, when a bad sea situation occurs, the lifeboat locking mechanism 34 is maintained in the locked state, the keel storage state lock 38 is released, and the keel locking mechanism 33 is locked when the keel 31 is released to the horizontal position after the maximum position.

The present invention has been described in detail with reference to the specific embodiments, but the present invention is only by way of example and is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are intended to be within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.

Claims

1. A multi-functional roll-down lifeboat, comprising:

a main hull (10);

a plurality of lifeboats (20); and

a plurality of keel assemblies (30) disposed on said main hull (10);

wherein the davit assembly (30) is connected with the lifeboat (20) to fold the lifeboat (20) on the ship body (10) or release the lifeboat (20) to the side surface thereof close to the water surface to form a rolling reduction release state;

a multilayer cabin-dividing deck (21) is arranged inside the lifeboat (20); the davit assembly (30) comprises a davit (31), a retractable steel cable (35), a fixed pulley (36) and a winch (37), wherein the winch (37) is connected with the top end of the davit (31) through the retractable steel cable (35) via the fixed pulley (36) so as to retract or release the davit (31).

2. A multifunctional roll-reducing lifeboat according to claim 1 wherein said keel block (31) is L-shaped, the bottom end of said keel block (31) being fixed to the lifeboat deck (11) of said main hull (10) by means of a hinged base (32); the top of the boat frame (31) is provided with a lifting hook (39) connected with the lifeboat (20).

3. A multifunctional roll-down lifeboat according to claim 2 wherein said keel block (31) is provided with a lifeboat locking mechanism (34) on the long side to lock said lifeboat (20).

4. A multifunctional roll-reducing lifeboat according to claim 3 wherein a davit locking mechanism (33) locking said davit (31) is provided on the lifeboat deck (11) of the main hull (10).

5. A multifunctional roll-reducing lifeboat according to claim 1 wherein said hull (10) is provided with a davit locking status catch (38) cooperating with said davit (31).

6. A multifunctional roll-reducing lifeboat according to claim 1 wherein in the roll-reducing released state said lifeboat (20) faces the water surface with the side rather than the bottom.

7. A multi-functional roll-down lifeboat according to claim 1 wherein said lifeboat (20) is provided with one of said hull assemblies (30) at each of its front and rear ends.

8. Multifunctional roll-reducing lifeboat according to claim 7, characterized in that the angle α between the keel block (31) on the keel block assembly (30) and the longitudinal line in the main hull (10) is less than 90 °.