阅读说明：本技术 救生筏快速登乘装置 (Life raft fast boarding device ) 是由 杨常青 王路才 于 2019-09-25 设计创作，主要内容包括：本发明涉及船舶防险与救生技术领域,特别涉及一种救生筏快速登乘装置,包括筏架、卷筒、导向轮、固定套筒和移动套筒,所述筏架固定在船舶甲板上,筏架上设置有芯轴,固定套筒和移动套筒套装在芯轴上,固定套筒和移动套筒相靠近的一侧设置有互相齿合的齿牙,固定套筒和移动套筒上分别固定连接有一个卷筒,所述筏架上方设置有一组导向轮,导向轮与卷筒一一对应,每个卷筒上分别设置有一根撤离带,撤离带固定端缠绕在卷筒上,自由端绕过导向轮自然下垂,两个卷筒上撤离带的缠绕方向相反。本发明能够实现紧急状态下船员的往复式撤离,本装置结构简单,操作方便,能够最大程度上保存撤离人员的体力,保证撤离过程的安全性。(the invention relates to the technical field of ship danger prevention and life saving, in particular to a life raft rapid boarding device which comprises a raft frame, winding drums, guide wheels, a fixed sleeve and a movable sleeve, wherein the raft frame is fixed on a ship deck, a mandrel is arranged on the raft frame, the fixed sleeve and the movable sleeve are sleeved on the mandrel, one side, close to the fixed sleeve and the movable sleeve, of each fixed sleeve is provided with teeth meshed with each other, the fixed sleeve and the movable sleeve are respectively and fixedly connected with one winding drum, a group of guide wheels are arranged above the raft frame, the guide wheels correspond to the winding drums one by one, each winding drum is respectively provided with an evacuation belt, the fixed end of each evacuation belt is wound on the corresponding winding drum, the free end of each evacuation belt bypasses the guide wheels to naturally droop, and the winding directions of the evacuation. The device can realize reciprocating evacuation of crews in an emergency state, has a simple structure, is convenient to operate, can furthest save the physical strength of the evacuated crews, and ensures the safety of the evacuation process.)

1. Device is stepped on fast to life raft, its characterized in that: including raft frame, reel, leading wheel, fixed sleeve and movable sleeve, raft frame fixes on the boats and ships deck, is provided with the dabber on the raft frame, and fixed sleeve and movable sleeve suit are at the spindle, and one side that fixed sleeve and movable sleeve are close to mutually is provided with the tooth of meshing of each other, and on fixed sleeve and the movable sleeve respectively fixedly connected with reel, raft frame top is provided with a set of leading wheel, and leading wheel and reel one-to-one are provided with one respectively on every reel and withdraw the area, withdraw and take the stiff end winding on the reel, and the leading wheel is walked around to the free end and is flagging naturally, withdraws the winding opposite direction in area on two reels.

2. The liferaft quick boarding device according to claim 1, wherein: the fixed sleeve is fixedly connected with the mandrel, the movable sleeve is connected with the mandrel in a sliding mode, a brake rod is arranged on one side, close to the movable sleeve, of the raft frame, and a brake rod hole matched with the brake rod is formed in the movable sleeve.

3. The liferaft quick boarding device according to claim 2, wherein: a clutch shifting fork for controlling the sliding of the movable sleeve is arranged on the movable sleeve; fixedly connected with shrouding on the raft frame is provided with the rectangular hole that supplies the separation and reunion shift fork to remove on the shrouding, and the separation and reunion shift fork is the lever structure to the middle part of separation and reunion shift fork is the fulcrum, and separation and reunion shift fork head connects the traveling sleeve, and the separation and reunion shift fork afterbody extends to outside the rectangular hole, be provided with the plectrum of locking separation and reunion shift fork on the shrouding, the plectrum is articulated with the shroudin.

4. The liferaft quick boarding device according to claim 1, wherein: still include the swivel mount, the swivel mount is "door" type support, including the side lever of both sides and the top horizontal pole of connecting the both sides side lever, two side levers of swivel mount set up respectively in the both sides of raft frame, and the swivel mount is articulated through the bottom of both sides side lever and raft frame, and the leading wheel is installed on the top horizontal pole of swivel mount.

5. The liferaft quick boarding device according to claim 4, wherein: the swivel mount is flexible swivel mount, and the side lever of swivel mount both sides is the telescopic link, and the bottom and the raft frame bottom of the stiff end of telescopic link are articulated, and the top horizontal pole is connected at the top of the flexible end of telescopic link.

6. A liferaft rapid embarkation device according to any one of the claims 1 to 5, wherein: and the fixed sleeve is sleeved with a band-type brake device for controlling the rotation speed of the sleeve.

7. the liferaft quick boarding device according to any one of claims 6, wherein: the band-type brake device comprises a friction plate, a spring, a connecting piece and a speed control handle, wherein the friction plate is an annular elastic plate with an opening, the friction plate is sleeved outside the fixed sleeve, the two ends of the opening of the friction plate are connected through the spring, the speed control handle is hinged to one end of the opening of the friction plate, the connecting piece is hinged to the other end of the opening of the friction plate, and the speed control handle is hinged to the connecting piece.

8. A liferaft rapid embarkation device according to any one of the claims 1 to 5, wherein: the fixed sleeve is provided with a slow descending device.

9. The liferaft quick boarding device according to claim 1, wherein: the evacuation belt is a flat belt or a rope or an iron chain.

10. Use of a liferaft rapid embarkation device according to claim 3, wherein: when the first evacuation device is used, a first evacuation person pulls the free end of the evacuation belt on one side of the fixed sleeve to descend for evacuation, at the moment, the winding drum on the fixed sleeve rotates to drive the fixed sleeve to rotate, the movable sleeve keeps still until the first evacuation person finishes the falling process, the evacuation belt on one side of the fixed sleeve is in a release state, and the evacuation belt on one side of the movable sleeve is in a winding state; then the movable sleeve is shifted to one side of the fixed sleeve to separate the brake rod from the brake rod hole, the movable sleeve is meshed with the fixed sleeve, a second evacuated person pulls the free end of the evacuation belt on one side of the movable sleeve to descend for evacuation, the movable sleeve and the fixed sleeve synchronously rotate, the drum on one side of the fixed sleeve retracts the evacuation belt while the drum on one side of the movable sleeve releases the evacuation belt until the second evacuated person finishes the falling process, at the moment, the evacuation belt on one side of the fixed sleeve is in a winding state, and the evacuation belt on one side of the movable sleeve is in a releasing state; the subsequent evacuation personnel sequentially pull the evacuation belt in a winding state to perform reciprocating evacuation.

Technical Field

The invention relates to the technical field of ship danger prevention and life saving, in particular to a life raft rapid boarding device.

Background

The ship escape device is generally marine life-saving equipment forming an evacuation channel through a release device, is mainly arranged on passenger ships or various operation ship bodies and is used for assisting personnel to evacuate a ship in distress quickly when the ship is in an emergency. At present, a boarding rope ladder is usually equipped in ship life-saving equipment, crews can sequentially descend to the water surface by the boarding rope ladder and then enter a life raft or a life boat, if the situation is urgent and the number of the crews is large, the crews need to directly jump into the water and then swim to the life raft to board the life raft.

The boarding rope ladder has the following problems: firstly, the speed is low, particularly in emergency, crews need to be evacuated to the life raft quickly, and if the number of the crews is large, a lot of precious time is wasted; secondly, the people who fall into the water can not only climb on the life raft or the life boat in the water with more difficulty, but also greatly reduce the survival time after wetting; thirdly, the wounded use difficulty, use and board the rope ladder and need certain physical power, to the person who is weak in physical strength such as wounded use board the rope ladder and have certain difficulty.

Disclosure of Invention

according to the defects of the prior art, the invention aims to provide a life raft rapid boarding device for rapid evacuation of crews in emergency situations such as ship accident.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: device is ridden fast to life raft, including raft frame, reel, leading wheel, fixed sleeve and movable sleeve, the raft frame is fixed on the boats and ships deck, is provided with the dabber on the raft frame, and fixed sleeve and movable sleeve suit are at the dabber, and one side that fixed sleeve and movable sleeve are close to mutually is provided with the tooth of meshing of each other, and on fixed sleeve and the movable sleeve respectively fixedly connected with reel, raft frame top is provided with a set of leading wheel, leading wheel and reel one-to-one, is provided with one respectively on every reel and withdraws the area, withdraws to take the stiff end winding on the reel, and the leading wheel natural sag is walked around to the free end, withdraws on two reels that the winding direction of area is opposite.

Furthermore, fixed sleeve and dabber fixed connection, movable sleeve and dabber sliding connection, one side that the raft frame is close to movable sleeve sets up the brake lever, sets up on the movable sleeve and cooperatees the brake lever hole with the brake lever.

Furthermore, a clutch shifting fork for controlling the sliding and locking of the movable sleeve is arranged on the movable sleeve.

Furthermore, fixedly connected with shrouding is gone up to the raft frame, is provided with the rectangular hole that supplies the separation and reunion shift fork to remove on the shrouding, and the separation and reunion shift fork is the lever structure to the middle part of separation and reunion shift fork is the fulcrum, and separation and reunion shift fork head connects the removal sleeve, and separation and reunion shift fork afterbody extends to outside the rectangular hole, be provided with the plectrum of locking separation and reunion shift fork on the shrouding, the plectrum is articulated with the shro.

Further, life raft steps on fast and takes advantage of device still include the swivel mount, the swivel mount is "door" type support, including the side lever of both sides and the top horizontal pole of connecting both sides side lever, two side levers of swivel mount set up respectively in the both sides of raft frame, the swivel mount is articulated through both sides side lever and raft frame's bottom, the leading wheel is installed on the top horizontal pole of swivel mount.

Further, the swivel mount is flexible swivel mount, and the side lever of swivel mount both sides is the telescopic link, and the bottom and the raft frame bottom of the stiff end of telescopic link are articulated, and the top horizontal pole is connected at the top of the flexible end of telescopic link.

Preferably, the bottom of the fixed end of the telescopic rod is hinged with the bottom of the raft frame through a hinged support.

Furthermore, a contracting brake device for controlling the rotating speed of the sleeve is sleeved on the fixed sleeve.

Further, the band-type brake device includes friction disc, spring, connecting piece and speed control handle, the friction disc is for having open-ended annular elastic sheet, and the friction disc cover is established in fixed sleeve's the outside, and spring coupling is passed through at the open-ended both ends of friction disc, speed control handle articulates in friction disc open-ended one end, and the connecting piece articulates at the open-ended other end of friction disc, and speed control handle articulates with the connecting piece.

Furthermore, a slow descending device is arranged on the fixed sleeve.

Further, the evacuation belt is a flat belt or a rope or an iron chain or other flexible materials capable of forming a winding and releasing state.

Furthermore, a life raft is assembled on the raft frame.

Furthermore, the use method of the life raft rapid boarding device comprises the steps that in an initial state, the fixed sleeve and the movable sleeve are separated, the brake rod is inserted into the brake rod hole of the movable sleeve, when the life raft rapid boarding device is used, a first evacuated person pulls the free end of the evacuation belt on one side of the fixed sleeve to descend for evacuation, at the moment, the winding drum on the fixed sleeve rotates to drive the fixed sleeve to rotate, the movable sleeve keeps still until the first evacuated person finishes a falling process, the evacuation belt on one side of the fixed sleeve is in a release state, and the evacuation belt on one side of the movable sleeve is in a winding state; then the movable sleeve is shifted to one side of the fixed sleeve to separate the brake rod from the brake rod hole, the movable sleeve is meshed with the fixed sleeve, a second evacuated person pulls the free end of the evacuation belt on one side of the movable sleeve to descend for evacuation, the movable sleeve and the fixed sleeve synchronously rotate, the drum on one side of the fixed sleeve retracts the evacuation belt while the drum on one side of the movable sleeve releases the evacuation belt until the second evacuated person finishes the falling process, the evacuation belt on one side of the fixed sleeve is in a winding state, and the evacuation belt on one side of the movable sleeve is in a releasing state; the subsequent evacuation personnel sequentially pull the evacuation belt in a winding state to perform reciprocating evacuation.

The invention has the beneficial effects that: the device can realize reciprocating evacuation of crews in an emergency state, has a simple structure, is convenient to operate, can furthest save the physical strength of the evacuated crews, and ensures the safety of the evacuation process.

Drawings

Fig. 1 is a schematic structural view of an escape device according to the present invention;

Fig. 2 is a view showing a state of use of the escape apparatus of the present invention;

FIG. 3 is a schematic view of a band-type brake device;

FIG. 4 is a schematic view of a frictional damping descent control device;

FIG. 5 is a schematic view of an escape type descent control device;

FIG. 6 is a schematic view of the working principle of the clutch fork;

In the figure: 1-raft frame; 2-fixed end of the telescopic rotating frame; 3-evacuation zone; 4-a telescopic end of the telescopic rotating frame; 5-a guide wheel; 6-top cross bar; 7-a hinged support; 8-mandrel; 9-moving the sleeve; 10-fixing the sleeve; 11-gear set; 12-a descent control device; 13-a descent control device shaft; 14-a band-type brake device; 15-a clutch fork; 16-a reel; 17-a brake lever; 18-brake lever bore; 19-a support bar; 20-friction plate; 21-a spring; 22-a connector; 23-speed control handle; 24-connecting lugs and 25-poking pieces; 26-closing plate; 27-a pin shaft; 28-clutch fork tail.

Detailed Description

In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.

Referring to the attached drawings 1-5, the life raft rapid boarding device comprises a raft frame 1, a winding drum 16, guide wheels 5, a telescopic rotating frame, a fixed sleeve 10 and a movable sleeve 9, wherein the raft frame 1 is fixed on a ship deck, the telescopic rotating frame is a door-shaped support and comprises telescopic rods on two sides and a top cross rod 6 for connecting the telescopic rods on the two sides, the telescopic rotating frame is arranged on two sides of the raft frame 1, the bottoms of fixed ends 2 of the telescopic rods on the two sides are hinged to the bottom of the raft frame 1 through a hinged support 7, and the tops of telescopic ends 4 of the telescopic rods are connected with the top cross rod 6; raft frame 1 is last to be provided with dabber 8, and fixed sleeve 10 and movable sleeve 9 suit are on dabber 8, and one side that fixed sleeve 10 and movable sleeve 9 are close to mutually is provided with the tooth that engages each other, and fixed sleeve 10 and movable sleeve 9 go up respectively fixedly connected with a reel 16, leading wheel 5 sets up on horizontal pole 6, and leading wheel 5 and reel 16 one-to-one are provided with one respectively on every reel 16 and withdraw area 3, withdraw 3 stiff end windings on reel 16 in area, and the free end is walked around leading wheel 5 and is flagging naturally, withdraws the winding opposite direction in area on two reels.

Based on the technical scheme, the evacuation personnel can grasp the evacuation belt 3 and evacuate to the water surface along with the release of the evacuation belt, and can also tie one end of the evacuation belt on the body of the personnel to finish the evacuation along with the release of the evacuation belt; for the wounded, the wounded can be placed in the lifesaving net bag, the net bag and the free end of the evacuation belt are fixed, and evacuation is completed along with the release of the evacuation belt.

Further, the guide wheel 5 corresponds to the position of the reel 16 after the sleeve is engaged.

Furthermore, fixed sleeve 10 is fixedly connected with dabber 8, and removal sleeve 9 is connected with dabber 8 sliding, and raft frame 1 sets up brake lever 17 near one side of removal sleeve, sets up on removal sleeve 9 and cooperates brake lever hole 18 with the brake lever.

Based on the technical scheme, the fixed sleeve 10 is completely fixed with the mandrel, the fixed sleeve 10 rotates synchronously with the mandrel, when the movable sleeve 9 is separated from the fixed sleeve 10, the movable sleeve 9 does not rotate along with the fixed sleeve 10 and the mandrel 8, when the movable sleeve 9 is meshed with the fixed sleeve 10, the movable sleeve 9 rotates along with the fixed sleeve 10, and at the moment, the mandrel 8, the movable sleeve 9 and the fixed sleeve 10 rotate synchronously.

when the device is in a storage state, the telescopic rotating frame is in a contraction state and stands on two sides of the raft frame 1, the movable sleeve 9 is positioned at the rightmost end, the brake rod 17 is inserted into the brake rod hole 18, and the movable sleeve 9 and the fixed sleeve 10 are completely separated. When the telescopic rotary frame is used, the telescopic end 4 of the telescopic rotary frame is pulled out from the fixed end 2, the telescopic rotary frame is inverted to the side of a ship board, and the free end of the evacuation belt 3 can extend out of the ship board.

Furthermore, a clutch fork 15 for controlling the sliding of the movable sleeve is arranged on the movable sleeve 9. The clutch shifting fork is used for shifting the movable sleeve to slide left and right, so that the movable sleeve is separated from and meshed with the fixed sleeve, and the movable sleeve can be locked, so that the meshed part cannot be disengaged. Fixedly connected with shrouding 26 on the raft frame 1, be provided with the rectangular hole that supplies separation and reunion shift fork 15 to remove on the shrouding 26, the separation and reunion shift fork is the lever structure to the middle part of separation and reunion shift fork is the fulcrum, and separation and reunion shift fork head connects removal sleeve 9, and separation and reunion shift fork afterbody 28 extends outside the rectangular hole, be provided with the plectrum 25 of locking separation and reunion shift fork on the shrouding 26, the plectrum is articulated with the shrouding through round pin axle. The sealing plate 26 is fixed at the rear part of the raft frame 1, the sealing plate 26 is provided with a strip hole for the clutch shifting fork 15 to move, the tail part of the clutch shifting fork extends out of the strip hole, and the movable sleeve 9 is shifted by shifting the tail part of the clutch shifting fork; when the tail part 28 of the clutch shifting fork is shifted to one end (namely the left end) close to the fixed sleeve 10, the head part of the clutch shifting fork and the movable sleeve 9 are positioned at one end (namely the right end) far away from the fixed sleeve 10, the fixed sleeve 10 and the movable sleeve 9 are in a separated state, and the shifting piece 25 is positioned above or below the strip hole and separated from the strip hole; when the tail part 28 of the clutch shifting fork is shifted to one end (namely the right end) far away from the fixed sleeve 10, the head part of the clutch shifting fork and the movable sleeve 9 are positioned at one end (namely the left end) close to the fixed sleeve 10, the fixed sleeve 10 and the movable sleeve 9 are positioned in a meshing state, the shifting piece 25 is shifted at the moment, the shifting piece 25 is contacted with the clutch shifting fork, the movement of the clutch shifting fork 15 is limited, so that the movable sleeve 9 is locked, and the meshing position of the movable sleeve 9 cannot be disengaged.

Further, a band-type brake device 14 for controlling the rotation speed of the sleeve is sleeved on the fixed sleeve 10.

Further, the band-type brake device includes friction disc 20, spring 21, connecting piece 22 and speed control handle 23, friction disc 20 is for having open-ended annular elastic sheet, and the outside at fixed sleeve 10 is established to friction disc 20 cover, and the open-ended both ends of friction disc are passed through spring 21 and are connected, speed control handle 23 articulates in friction disc open-ended one end, and connecting piece 22 articulates at the open-ended other end of friction disc, and speed control handle 23 is articulated with connecting piece 22. Both ends of the friction plate are provided with connecting lugs 24, and the connecting piece and the speed control handle are connected to the connecting lugs.

based on the technical scheme, the band-type brake device is provided with the spring 21 which has certain pretension force, so that the friction plate 20 and the fixed sleeve 10 can generate certain friction resistance to control the rotating speed of the fixed sleeve. The band-type brake device 14 is provided with a speed control handle 23, when the rotating speed of the fixed sleeve is too slow, the speed control handle 23 can be lifted up, so that the frictional resistance is reduced, and the rotating speed of the fixed sleeve 10 is accelerated; when the rotational speed of the stationary sleeve is too high, the speed control knob 23 may be depressed to increase the frictional resistance and reduce the rotational speed of the stationary sleeve 10.

Furthermore, the fixed sleeve 10 is provided with a slow-descending device, which can limit the rotation speed of the fixed sleeve. Slowly fall the device and include gear train 11 and slowly fall ware 12, gear train 11 is connected respectively on fixed sleeve 10 and slowly fall ware axle 13, slowly falls ware 12 of slowly falling ware axle 13 other end connection, through the rotatory drive gear train rotation meshing of fixed sleeve 10 to it is rotatory to drive slowly to fall ware axle 13, because slowly falls ware axle 13 and receives the restriction of slowly falling ware 12, slowly falls ware axle rotation speed and slows down, thereby feed back to fixed sleeve 10 on, makes fixed sleeve's rotation speed slow down. The descent control device can be a friction damping type descent control device; the friction damping descent control device controls the speed by the friction between the upper non-metal friction plate and the circular shell; the descent control device used in the present application may also be any other descent control device in the common knowledge, such as an escape type descent control device, which can control the speed and can be applied to the system to realize the uniform rotation of the fixed sleeve.

Based on the technical scheme, when the first evacuated person is evacuated from the fixed sleeve end, the contracting brake device 14 and the descent control device 12 can control the descending speed of the person, and if the first evacuated person is evacuated from the movable sleeve end, the person cannot be evacuated because the brake rod 17 is inserted into the brake rod hole 18 on the movable sleeve 9 initially, and the movable sleeve 9 cannot rotate, so that the person can be prevented from stalling and falling to cause accidents when the person is firstly evacuated from the movable sleeve end.

Further, the evacuation belt 3 is a flat belt or a rope or an iron chain or other flexible material capable of forming a winding and releasing state.

Further, the drooping length of the free ends of the two evacuation belts 3 is enough to facilitate the evacuation of people.

Further, a life raft is assembled on the raft frame 1. The life raft is arranged on the raft frame, when the life raft is evacuated, the life raft is firstly thrown into water, and the evacuation device can be started at the moment, so that the personnel can be ensured to accurately fall into the life raft.

Further, the use method of the life raft rapid boarding device is that in an initial state, the telescopic rotating frame is in a contraction state and stands on two sides of the raft frame 1, the fixed sleeve 10 is separated from the movable sleeve 9, the brake rod 17 is inserted into the brake rod hole 18 of the movable sleeve 9, when the life raft rapid boarding device is used, the telescopic end 4 of the telescopic rotating frame is pulled out from the fixed end 2 and is inverted to the side of a ship board, the free end of the evacuation belt 3 extends out of the ship board, a first evacuation person pulls the free end of the evacuation belt on one side of the fixed sleeve 10 to descend and evacuate, at the moment, the winding drum 16 on the fixed sleeve rotates to drive the fixed sleeve 10 to rotate, the movable sleeve 9 keeps still until the first evacuation person falls to the sea surface, the evacuation belt 3 on one side of the fixed sleeve 10 is in a release state, and the evacuation belt on one side of the movable sleeve 9 is in a winding state; then the movable sleeve 9 is shifted to one side of the fixed sleeve 10 through the clutch shifting fork 15, the brake rod 17 is separated from the brake rod hole 18, the movable sleeve 9 is completely meshed with the fixed sleeve 10, the position of the movable sleeve 9 is locked through the clutch shifting fork 15 and cannot be separated from a meshed state in the rotating process, a second evacuee pulls the free end of the evacuation belt on one side of the movable sleeve 9 to descend and evacuate, the movable sleeve 9 and the fixed sleeve 10 rotate synchronously, the reel 16 on one side of the movable sleeve 9 releases the evacuation belt, the reel on one side of the fixed sleeve 10 retracts the evacuation belt at the same time until the second evacuee falls to the sea surface, the evacuation belt on one side of the fixed sleeve 10 is in a winding state, and the evacuation belt on one side of the movable sleeve 9 is in a releasing state; the subsequent evacuation personnel sequentially pull the evacuation belt in a winding state to perform reciprocating evacuation.

The evacuation device is combined with the raft frame of the life raft, and the mechanical structure of the evacuation device is completely placed at the bottom of the raft frame, so that the normal function of the raft frame is not influenced.

According to the life raft rapid boarding device provided by the invention, the winding directions of the evacuation belts 3 on the two winding drums 16 are opposite, when the sleeve rotates, one winding drum releases the evacuation belt, the other winding drum recovers the evacuation belt, the rotation direction of the sleeve is changed, the winding drum releasing the evacuation belt starts to recover the evacuation belt, and the winding drum recovering the evacuation belt starts to release the evacuation belt, so that the reciprocating evacuation of crews can be realized.

Compared with the prior art, the invention has the following main advantages:

Firstly, the quick evacuation of crews (including wounded crews) in emergency can be realized: when in evacuation, the crew can evacuate to the water surface along with the release of the evacuation belt, and the physical power of the crew is not wasted.

Secondly, the direct boarding of the life raft or the life boat can be realized, and when the evacuation is carried out, the crew can evacuate to the life raft or the life boat along with the release of the evacuation belt, so that the dry boarding is realized, and the survival time is greatly prolonged;

thirdly, the maintenance cost is low, and the installation and the use are convenient: the device is only composed of mechanical structures, and the maintenance cost is low; the device realizes that the two sleeves can synchronously rotate and can be in a separated state through the design of the fixed sleeve and the movable sleeve.

fourthly, the winding direction of the evacuation belt is opposite, the reciprocating evacuation of the crewman can be realized, the gravity of the crewman is utilized during the evacuation, and the operation is simple and convenient.

Fifthly, the two evacuation belts are in a winding state in the storage state of the device, so that the storage space is reduced, and the evacuation belts are prevented from knotting to affect the use.

sixthly, the structure is simple, the applicability is strong, the length of the evacuation belt can be adjusted according to needs, and the rapid evacuation at different heights can be completed.

And seventhly, the method is wide in application, and the type and the tonnage of the ship are not limited at all.

The above list is only the preferred embodiment of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.