CN111439355A

CN111439355A - High-strength high-sea-condition free-falling lifeboat

Info

Publication number: CN111439355A
Application number: CN202010400141.8A
Authority: CN
Inventors: 华海波; 周娟; 秦刚; 庄金鹤
Original assignee: Jiangyin Neptune Marine Appliance Co ltd
Current assignee: Jiangyin Neptune Marine Appliance Co ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-07-24

Abstract

The invention discloses a high-strength high-sea-condition free-falling lifeboat, which relates to the technical field of lifeboat equipment and comprises a boat body and a boat frame, wherein the appearance design of the boat body adopts a fluid-solid coupling method to control the coupling action between a structure and fluid, the stress distribution of the lifeboat body is simulated and analyzed, the optimal appearance is simulated and verified by combining finite element analysis and a fluid mechanics result, and a plurality of safety seats, a first binding belt, a connecting head, a second binding belt and a third binding belt are arranged in the boat body. The invention utilizes computational fluid mechanics, finite analysis, reliability analysis, dynamic coupling response analysis and simulation verification to verify the optimal hull appearance design, so that the lifeboat can enter water at an optimal angle under the throwing height of 60 meters and convert buoyancy into forward impulsive force after water exits at an optimal posture.

Description

High-strength high-sea-condition free-falling lifeboat

Technical Field

The invention relates to the technical field of lifeboat equipment, in particular to a high-strength high-sea-condition free-falling lifeboat.

Background

The concept of the free-fall lifeboat is originally proposed by a Swedish person in 1897, and the free-fall lifeboat is widely applied to offshore lifesaving and evacuation nowadays after being optimized and perfected for hundreds of years. The lifeboat is made to freely fall into water along the course of a slide way of a lowering device deviating from a mother ship at the stern, and only a few seconds are needed for the lifeboat to reach the water surface from the beginning of releasing.

The existing free-fall lifeboats have the dropping height of 20 meters or more and 30 meters or less, and are subjected to complex and huge fluid impact load at the moment of high-speed water entering, and the impact load can not only damage the structures, but also cause huge damage to instruments and facilities and personnel in the structures.

Disclosure of Invention

In order to overcome the above defects in the prior art, embodiments of the present invention provide a high-strength high-sea-condition free-fall lifeboat, and the problems to be solved by the present invention are: how to improve the intensity and the shock resistance of the lifeboat, ensure the safety of internal personnel and structural instruments and strengthen the applicability of the lifeboat in high sea conditions.

In order to achieve the purpose, the invention provides the following technical scheme: a high-strength high-sea-condition free-fall lifeboat comprises a boat body and a boat frame, wherein the boat body is manufactured by a layer-laying method and a stacking method, the boat frame comprises a boat lifting arm, a slide way, a release hook device, a boat fixing device, a hydraulic system, a hydraulic boat lifting winch, an arm support, a ship lock and a boat lifting rope, one end of the boat lifting arm is movably connected with the arm support, the slide way is obliquely arranged, the release hook device is movably connected with the boat fixing device, the boat lifting rope is arranged at one end, far away from the arm support, of the boat lifting arm, the appearance design of the boat body adopts a fluid-solid coupling method to control the coupling effect between a structure and fluid, the stress distribution of the lifeboat body is simulated and analyzed, the optimal appearance is simulated and verified by combining finite element analysis results, a plurality of safety seats are arranged in the boat body, first bandages are symmetrically arranged on two sides of the top of the outer walls of the, two first bandage one end is equipped with same connector, safety seat outer wall middle part bilateral symmetry is equipped with the second bandage, the second bandage with the connector joint, the safety seat outer wall in second bandage below is equipped with the third bandage.

In a preferred embodiment, the top of the boat body is provided with a ceiling, and the top of the ceiling is provided with a boat sling fixing frame.

In a preferred embodiment, the release hook means comprises a release handle, a handle safety pin, a release flexible shaft, a release shaft safety pin and a simulated release chain.

In a preferred embodiment, the handle safety pin is disposed between the release handle and the release flexible shaft, and the release shaft safety pin is disposed between the release flexible shaft and the simulated release chain.

In a preferred embodiment, the release handle, the handle safety pin, the release flexible shaft and the release shaft safety pin are all arranged on the submarine body.

In a preferred embodiment, the boat fixing device comprises a fixed seat, a boat fixing hook and a boat fixing chain, the simulated release chain is connected with the fixed seat, the boat fixing hook is connected with the boat body, and the fixed seat and the boat fixing hook are connected through the boat fixing chain.

In a preferred embodiment, when simulating the optimal shape of the hull, the hull is made of glass fiber reinforced plastic composite material, and a three-dimensional model is constructed by using limited analysis software, a fluid mechanics CFD is calculated, the flow and heat transfer of air are simulated by using the law of physical conservation, an optimization is created for the air flow and heat transfer model, and the optimal shape is verified by simulation.

In a preferred embodiment, the arm support is provided at a lower end of the top of the slide and the boat fixing device is provided at an upper end of the top of the slide.

In a preferred embodiment, one end of the hydraulic system is movably connected with the slide way, and the other end of the hydraulic system is movably connected with the yacht arm.

In a preferred embodiment, a telescopic mechanism is provided inside the safety seat to be respectively matched with the first strap, the second strap and the third strap.

The invention has the technical effects and advantages that:

1. the coupling effect between the structure and the fluid is controlled based on the fluid-solid coupling method, the stress distribution of a lifeboat body is simulated and analyzed, the optimal hull appearance design is simulated and verified by combining a finite element analysis result, so that the lifeboat can be guaranteed to enter water at an optimal angle under the throwing height of 60 meters, buoyancy is converted into forward impact force after water is discharged at an optimal posture, the effect of keeping away from a mother boat at the fastest speed is achieved, the hull adopts a layering method and a stacking method, and the optimal structure simulated by a computer is combined, so that the strength of the designed and manufactured hull is enough to bear the impact force generated when the lifeboat body is thrown on a water surface at the height of 60 meters;

2. the invention researches and designs a five-point type (2-point knee, 2-point shoulder and 1-point pelvis) safety seat, replaces the traditional three-point type safety seat, can better fix members on a lifeboat seat, and improves the riding safety.

Drawings

Fig. 1 is a schematic structural view of the whole of the present invention.

FIG. 2 is a schematic view showing a state of the present invention in free fall.

Fig. 3 is an enlarged view of a portion of the present invention.

Fig. 4 is a front view of the safety seat of the present invention.

Fig. 5 is a schematic view of the transportation and hoisting of the hull of the present invention.

Fig. 6 is a schematic view of another transportation and hoisting of the hull of the present invention.

Fig. 7 is a schematic view of the recovery of the lifeboat of the invention.

Fig. 8 is a schematic view of the configuration of the preferred profile lifeboat of the present invention.

Figure 9 is a front view of the preferred profile lifeboat of the present invention.

The reference signs are: the boat body, the boat frame, the boat lifting arm, the slide way, the release hook device, the boat fixing device, the hydraulic system, the hydraulic boat lifting winch, the arm support, the boat lock, the boat lifting rope, the safety seat, the first binding belt, the connector, the second binding belt, the third binding belt, the ceiling 17, the boat lifting rope fixing frame 18, the release handle 19, the handle safety pin 20, the release flexible shaft 21, the release shaft safety pin 22, the simulated release chain 23, the fixing seat 24, the boat fixing hook 25 and the boat fixing chain 26 are arranged on the boat body 1.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more example embodiments. In the following description, numerous specific details are provided to give a thorough understanding of example embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, steps, and so forth. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

1-9, the high-strength high-sea-condition free-fall lifeboat comprises a hull 1 and a hull frame 2, wherein the hull 1 is manufactured by a layer-laying method and a stacking method, the hull frame 2 comprises a boat lifting arm 3, a slide way 4, a release hook device 5, a boat fixing device 6, a hydraulic system 7, a hydraulic boat lifting winch 8, an arm support 9, a ship lock 10 and a boat lifting rope 11, one end of the boat lifting arm 3 is movably connected with the arm support 9, the slide way 4 is obliquely arranged, the release hook device 5 is movably connected with the boat fixing device 6, the boat lifting rope 11 is arranged at one end of the boat lifting arm 3 far away from the arm support 9, the hull 1 is designed to adopt a fluid-solid coupling method to control the coupling effect between a structure and a fluid, the stress distribution of the lifeboat body is simulated and analyzed, and the optimal appearance is simulated and verified by combining a finite element analysis result;

the ceiling 17 is arranged at the top of the boat body 1, the boat sling fixing frame 18 is arranged at the top of the ceiling 17, the ceiling 17 shields the upper part of the boat body 1, the boat body 1 can be sealed, the safety performance of the boat body 1 is enhanced, and the boat sling fixing frame 18 is fixedly connected with the boat sling 12 and used for lifting and hoisting the boat body 1;

the release hook device 5 comprises a release handle 19, a handle safety pin 20, a release flexible shaft 21, a release shaft safety pin 22 and a simulated release chain 23, wherein the handle safety pin 20 is arranged between the release handle 19 and the release flexible shaft 21, and the release shaft safety pin 22 is arranged between the release flexible shaft 21 and the simulated release chain 23; the release handle 19, the handle safety pin 20, the release flexible shaft 21 and the release shaft safety pin 22 are all arranged on the boat body 1, a driver can directly operate the release hook device 5 in the boat body 1, pull out the release shaft safety pin 22 from the outside, pull out the handle safety pin 20 from the inside of the boat body 1, pull the release handle 19, drive the release flexible shaft 21 to move through the release handle 19, and drive the simulated release chain 23 to move through the release flexible shaft 21, so that the release hook operation is realized;

the boat fixing device 6 comprises a fixed seat 24, a boat fixing hook 25 and a boat fixing chain 26, the simulation release chain 23 is connected with the fixed seat 24, the boat fixing hook 25 is connected with the boat body 1, the fixed seat 24 and the boat fixing hook 25 are connected through the boat fixing chain 26, the boat fixing hook 25 is fixedly connected with the fixed seat 24 through the fixed chain 26, and the boat body 1 is fixed;

the arm support 9 is arranged at the lower end of the top of the slideway 4, and the boat fixing device 6 is arranged at the higher end of the top of the slideway 4, so that the front end of the boat body 1 is ensured to be inclined downwards, and the boat body 1 can enter water conveniently;

one end of the hydraulic system 7 is movably connected with the slide way 4, the other end of the hydraulic system 7 is movably connected with the boat jib 3, telescopic adjustment of the hydraulic system 7 is guaranteed, and adjustment of the boat jib 3 is achieved.

When the optimal shape of the boat body 1 is simulated, a three-dimensional model is constructed by using limited analysis software, a fluid mechanics CFD is calculated, the flow and heat transfer of air are simulated by using a physical conservation law, a model aiming at the flow and heat transfer of the air is created for optimization, the optimal shape is simulated and verified, and the boat body 1 is made of a glass fiber reinforced plastic composite material.

The implementation mode is specifically as follows: when the lifeboat is released, obstacles are removed, the separation of the lifeboat cable 11 and the suspension arm hook is confirmed, the lifeboat cable ring is fixed on the lifeboat cable fixing frame 18 of the ceiling 17, the external charging plug of the lifeboat is pulled out, after passengers board the lifeboat, all boarding doors and cabin covers are closed, the passengers sit and tighten the safety belt, the engine is started, the release hook and the safety pin of the release mechanism are pulled out in the lifeboat, the release hook device 5 is operated at the same time, the tail chain and the release hook are separated, the lifeboat freely falls into water along the slide way 4, and the lifeboat drives away from the mother boat at full speed; when the lifeboat is recovered, a pump station motor is started, an oil cylinder reversing valve is operated, the lifeboat arm 3 is jacked and moved to the full outboard, a boat lifting winch reversing valve is operated to lower a suspension arm lifting hook to the position where the lifeboat can be hung, after a lifeboat cable ring is dismounted from a fixed seat, the lifeboat cable ring is respectively hung on the lifting hook of the lifeboat arm 3, the lifeboat fixing device 6 is confirmed to be at the opening position, the boat lifting winch reversing valve is operated to lift the lifeboat, the system pressure is increased due to the action of a limiting push rod after the lifeboat is in place, an overflow valve is unloaded, the lifeboat stops rising, the oil cylinder reversing valve is operated, the lifeboat 3 rotates to the inboard, the lifeboat enters a slide way 4, the lifeboat is in place, a tail hanging chain is hung in a release hook, the lifting hook is locked, a safety pin is inserted, the suspension arm lifting hook is descended until the lifeboat cable is loosened, and the lifeboat; lifting the suspension arm lifting hook to the storage position, simultaneously enabling the boat lifting arm 3 to fall onto the support rod, tensioning a guy cable of the boat fixing device 6, enabling the movable ring to hook the keel hook, and turning off a power supply of the hydraulic pump station; the invention adopts the fluid-solid coupling method to control the coupling action between the structure and the fluid, simulate and analyze the stress distribution of the lifeboat body, combine the finite element analysis result, utilize the finite analysis software to construct the three-dimensional model, calculate the fluid mechanics CFD, the process of calculating the fluid mechanics CFD is the prior art, because no redundant description is made here, utilize the physical conservation law to simulate the flow and the heat transfer of the air, simulate the flow and the heat transfer of the air as the self-carrying flow of the analysis software, create a model for optimizing the air flow and the heat conduction, simulate and verify the optimal appearance, the thinking and the process of constructing the three-dimensional model by utilizing the finite analysis software are similar to the thinking process of the design result, the model is vivid, the optimization of the air flow and the heat conduction model can ensure that the lifeboat can keep relative stability in the stormy waves, namely the direction of the hydrodynamic force lift caused by the pushing moment is large enough, the safety of the lifeboat in use under the extreme state and the normal use state is guaranteed at the moment caused by counteracting fatigue current and wind power, the lifeboat can enter water at the optimal angle under the throwing height of 60 meters, buoyancy is converted into forward impact force after water is discharged at the optimal posture, the effect of keeping away from a mother boat at the fastest speed is achieved, the boat body 1 adopts a layer laying method and an accumulation method, the optimum structure simulated by a computer is combined, the strength of the designed and manufactured boat body is enough to bear the impact force generated when the lifeboat body is thrown at the height of 60 meters into the water, and the glass fiber reinforced plastic composite material structure has good resistance and resistance to crack expansion; under extreme conditions, potential safety hazards caused by cracks are avoided, and the safety of personnel on the lifeboat is guaranteed to a greater extent; the embodiment specifically solves the problems that the existing free-fall lifeboat in the background technology has poor applicability in high sea conditions, is subjected to complex and huge fluid impact load action at the moment of entering water at high speed, and the impact load can not only damage the structure, but also cause huge damage to instruments and facilities and personnel in the structure.

3-4, the high-strength high-sea-condition free-fall lifeboat further comprises a plurality of safety seats 12 arranged inside the lifeboat body 1, wherein first binding bands 13 are symmetrically arranged on two sides of the top of the outer wall of each safety seat 12, one end of each of the first binding bands 13 is provided with a same connector 14, second binding bands 15 are symmetrically arranged on two sides of the middle of the outer wall of each safety seat 12, the second binding bands 15 are clamped with the connectors 14, and third binding bands 16 are arranged on the outer wall of each safety seat 13 below the second binding bands 15;

the inside telescopic mechanism that is equipped with respectively with first bandage 13, second bandage 15 and third bandage 16 phase-match that is equipped with of safety seat 12 is convenient for carry out flexible regulation to first bandage 13, second bandage 15 and third bandage 16, improves safety seat 12's suitability, can supply the personnel of different sizes to use.

The implementation mode is specifically as follows: during the use, through setting up connector 14 and two first bandages 13, second bandage 15 and third bandage 16, pass two third bandages 16 with both legs respectively, put two first bandages 13 in the two shoulder outsides, with two second bandage 15 and connector 14 joint, first bandage 13 can be fixed to the shoulder, second bandage 15 can be fixed waist pelvis, third bandage 16 can be fixed leg knee, can realize that safety seat 12's five point type is fixed, compare in three point type safety seat safe and reliable more, and it is simple to use convenient.

The working principle of the invention is as follows:

referring to the attached drawings 1-9 of the specification, the invention utilizes computational fluid mechanics, limited analysis, reliability analysis, dynamic coupling response analysis and simulation verification to verify the optimal hull appearance design, so that the lifeboat can ensure that the lifeboat enters water at the optimal angle under the throwing height of 60 meters and converts buoyancy into forward impulsive force after the water exits at the optimal posture so as to achieve the effect of keeping away from a mother boat at the fastest speed, the hull 1 adopts a layer laying method and a stacking method and combines with the optimal structure simulated by a computer, the strength of the hull designed and manufactured is enough to bear the impact force generated when the lifeboat is thrown to a water surface at the height of 60 meters, the glass fiber reinforced plastic composite material structure has good resistance and resistance to crack expansion, and under the extreme condition, the potential safety hazard generated by cracks is avoided, and the safety of personnel on the lifeboat is ensured to a greater extent;

further, referring to the attached figures 3-4 of the specification, the invention researches and designs a five-point type (2-point knee, 2-point shoulder and 1-point pelvis) safety seat, replaces the traditional three-point type safety seat, and can better fix members on a lifeboat seat and improve the riding safety.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a high sea state free fall formula lifeboat of high strength, includes hull (1) and keel block (2), its characterized in that: the boat body (1) is manufactured by adopting a layer-laying method and a stacking method, the boat frame (2) comprises a boat lifting arm (3), a slide way (4), a release hook device (5), a boat fixing device (6), a hydraulic system (7), a hydraulic boat lifting winch (8), an arm support (9), a ship lock (10) and a boat lifting rope (11), one end of the boat lifting arm (3) is movably connected with the arm support (9), the slide way (4) is obliquely arranged, the release hook device (5) is movably connected with the boat fixing device (6), the boat lifting rope (11) is arranged at one end, far away from the arm support (9), of the boat lifting arm (3), a plurality of safety seats (12) are arranged in the boat body (1), first binding bands (13) are symmetrically arranged on two sides of the top of the outer wall of each safety seat (12), one end of each first binding band (13) is provided with a same connecting head (14), safe seat (12) outer wall middle part bilateral symmetry is equipped with second bandage (15), second bandage (15) with connector (14) joint, safe seat (13) outer wall in second bandage (15) below is equipped with third bandage (16).

2. The high strength, high sea condition free-fall lifeboat of claim 1 wherein: the boat body (1) is provided with a ceiling (17) at the top, and a boat davit fixing frame (18) is arranged at the top of the ceiling (17).

3. The high strength, high sea condition free-fall lifeboat of claim 1 wherein: the release hook device (5) comprises a release handle (19), a handle safety pin (20), a release flexible shaft (21), a release shaft safety pin (22) and a simulated release chain (23).

4. A high strength, high sea state free-fall lifeboat according to claim 3 wherein: the handle safety pin (20) is arranged between the release handle (19) and the release flexible shaft (21), and the release shaft safety pin (22) is arranged between the release flexible shaft (21) and the simulated release chain (23).

5. A high strength, high sea state free-fall lifeboat according to claim 3 wherein: the release handle (19), the handle safety pin (20), the release flexible shaft (21) and the release shaft safety pin (22) are all arranged on the boat body (1).

6. A high strength, high sea state free-fall lifeboat according to claim 3 wherein: the boat fixing device (6) comprises a fixed seat (24), a boat fixing hook (25) and a boat fixing chain (26), the simulation release chain (23) is connected with the fixed seat (24), the boat fixing hook (25) is connected with the boat body (1), and the fixed seat (24) is connected with the boat fixing hook (25) through the boat fixing chain (26).

7. The high strength, high sea condition free-fall lifeboat of claim 1 wherein: the submarine body (1) is designed by adopting a fluid-solid coupling method to control the coupling effect between a structure and fluid, the stress distribution of the lifeboat body is simulated and analyzed, the optimal appearance is simulated and verified by combining a finite element analysis result, when the optimal appearance of the submarine body (1) is simulated, a three-dimensional model is constructed by using limited analysis software, the fluid mechanics CFD is calculated according to the three-dimensional model, the flow and heat transfer of air are simulated by using a physical conservation law, the optimization of an air flow and heat conduction model is created, the optimal appearance is simulated and verified according to the optimized model, and the submarine body (1) is made of a glass fiber reinforced plastic composite material.

8. The high strength, high sea condition free-fall lifeboat of claim 1 wherein: the arm support (9) is arranged at the lower end of the top of the slideway (4), and the boat fixing device (6) is arranged at the higher end of the top of the slideway (4).

9. The high strength, high sea condition free-fall lifeboat of claim 1 wherein: one end of the hydraulic system (7) is movably connected with the slide way (4), and the other end of the hydraulic system (7) is movably connected with the boat lifting arm (3).

10. The high strength, high sea condition free-fall lifeboat of claim 1 wherein: and a telescopic mechanism which is respectively matched with the first binding belt (13), the second binding belt (15) and the third binding belt (16) is arranged in the safety seat (12).