Marine life raft with quick release structure

Abstract

The invention belongs to the technical field of life rafts, and relates to a marine life raft with a quick release structure. Comprising a raft body, fixing soft nets which are symmetrically distributed are installed on the lower side of the raft body, the fixing soft nets are fixedly connected with fixing pipes which are distributed at equal intervals, connecting ropes are slidably connected into the fixing pipes, the fixing soft nets are fixedly connected with connecting plates, and the connecting ropes which are distributed at equal intervals on one side are jointly and fixedly connected with a supporting plate. The supporting plate is fixedly connected with first clamping hooks distributed at equal intervals, the connecting ropes distributed on the other side at equal intervals are jointly and fixedly connected with a fixing plate, the fixing plate is slidably and rotationally connected with a rotating rod, and the rotating rod is fixedly connected with second clamping hooks which are distributed at equal intervals and correspond to the first clamping hooks distributed at equal intervals in a one-to-one mode. An operator is wrapped by the raft body through the first clamping hook and the second clamping hook, so that the operator and the raft body jump into the sea synchronously, it is guaranteed that the operator makes contact with the raft body all the time, and the operator does not need to swim to the life raft.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of life raft, in particular to a sea life raft with quick release structure. BACKGROUND

[0002] The sea life raft is a key lifesaving equipment for ships, offshore platforms and the like, which is used to provide temporary water shelter and survival guarantee for people falling into the water or waiting to evacuate when the ship sinks or personnel need to evacuate urgently. Its core role is to maintain the life safety of passengers in adverse sea conditions and wait for rescue. The sea life raft includes two types of multi-person and single-person.

[0003] The use process of the single-person sea life raft is as follows: The operator first puts the inflated life raft into the sea (or first puts the life raft into the sea and then inflates it), after the life raft is put into the water, the operator jumps into the sea near the life raft and swims to the life raft, although there is a connecting rope between the life raft and the ship body, but in the case of wind and wave weather, the life raft in the water will also drift with the sea water, far away from the operator, and the turbulent sea waves make it difficult for the fallen person to effectively swim close to and grab the raft body. For those who cannot swim, it is even more difficult to play the role of the life raft. SUMMARY

[0004] In order to overcome the shortcoming that the operator is difficult to approach and grab the raft body, the present application provides a sea life raft with quick release structure and locking function.

[0005] The technical scheme of the present application is as follows: a sea life raft with quick release structure, comprising a raft body, a fixed soft net symmetrically arranged on the lower side of the raft body, a fixed pipe fixedly connected to the fixed soft net, a connecting rope slidably connected to the fixed pipe, a connecting plate fixedly connected to the fixed soft net, a counterweight shell commonly fixedly connected to the symmetrically arranged connecting plates, a guide rod rotatably connected to the connecting plate for the adjacent connecting rope to pass through, a pressing plate slidably connected to the counterweight shell, one side of the connecting rope close to the counterweight shell being fixedly connected to the pressing plate, a support plate commonly fixedly connected to the connecting rope on the other side at equal intervals, a first hook fixedly connected to the support plate at equal intervals, a fixed plate commonly fixedly connected to the connecting rope on the other side at equal intervals, a rotating rod slidably and rotatably connected to the fixed plate, a second hook fixedly connected to the rotating rod at equal intervals and corresponding to the first hook at equal intervals, and the second hook being used to lock the corresponding first hook.

[0006] As a preferred, a spring is fixedly connected between the pressing plate and the counterweight shell.

[0007] As a preferred, a floating buoy is arranged on the side of the fixed soft net away from the counterweight shell.

[0008] As a preferred, the fixed plate is fixedly connected with guide frames which are distributed at equal intervals and correspond to the first hooks one by one, and the guide frames are used for positioning the corresponding first hooks.

[0009] As a preferred, the fixed plate is fixedly connected with a fixed sleeve, a first sealing ring is sealingly and slidingly connected in the fixed sleeve, the first sealing ring is fixedly connected with the rotating rod, an air bag is arranged in the counterweight shell, the pressing plate is used for pressing the air bag, the air bag and the fixed sleeve are communicated through a gas guide pipe, a floating plate is slidingly connected in the counterweight shell, the floating plate is fixedly connected with the air bag through a support, a first one-way valve is arranged in a first through hole in the lower side of the counterweight shell.

[0010] As a preferred, the rotating rod is provided with a spline groove, a sliding ring is slidingly connected in the spline groove of the rotating rod, and a torsion spring is fixedly connected between the sliding ring and the fixed plate.

[0011] As a preferred, a sealing cylinder is fixedly connected to the side of the fixed plate away from the fixed sleeve, the sealing cylinder is sealingly and slidingly and rotatably connected with the rotating rod, a second sealing ring is fixedly connected in the sealing cylinder of the rotating rod, and the second sealing ring is sealingly and slidingly and rotatably connected with the sealing cylinder.

[0012] As a preferred, the rotating rod is provided with a storage cavity, the rotating rod is provided with a through groove which is communicated with the storage cavity, the sealing cylinder is fixedly connected with an arc-shaped plate which is used for plugging the through groove, the rotating rod is provided with a plug which is used for plugging the storage cavity, the sealing cylinder is provided with a second through hole, a second one-way valve is arranged in the second through hole of the sealing cylinder, the fixed sleeve is provided with a third through hole, a third one-way valve is arranged in the third through hole of the fixed sleeve, and the storage cavity is filled with a substance which is used for absorbing gas in the sealing cylinder.

[0013] As a preferred, the substance in the storage cavity is NaOH solution, and the sealing cylinder is filled with CO2.

[0014] As a preferred, the hole diameter of the third through hole of the fixed sleeve is smaller than the inner diameter of the fixed sleeve.

[0015] To sum up, the present application has at least one of the following beneficial technical effects: the present application wraps the operator by the first and second hooks, and further locks the operator by the spring belt and the connecting rope, so that the operator and the raft jump into the sea synchronously, ensuring that the operator is always in contact with the raft, without the need for the operator to swim to the life raft, the first hook and the second hook are released by moving the rotating rod, so that the raft is quickly unfolded, thereby realizing rapid release, after the operator jumps into the sea, the floating buoy and the counterweight shell ensure that the operator's face is upwards, ensuring normal breathing, by extending the operator's arms to both sides, the air bag is squeezed, the limit between the first hook and the second hook is released, so that the raft is quickly unfolded, ensuring the safety of the operator, for some people who cannot swim, the present life raft can also play a role, the high-concentration CO2 in the storage cavity is absorbed by the NaOH solution, thereby further ensuring that the raft can be completely unfolded after the operator jumps into the sea, assisting the operator to unfold the raft. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is a schematic diagram of the three-dimensional structure of the present application; Figure 3 is a schematic diagram of the three-dimensional structure of the present application; Figure 4 is a schematic diagram of the three-dimensional structure of the present application; Figure 5 is a schematic diagram of the three-dimensional structure of the present application; Figure 6 is a schematic diagram of the three-dimensional structure of the present application; Figure 7 is a schematic diagram of the three-dimensional structure of the present application; Figure 8 is a schematic diagram of the three-dimensional structure of the present application; Figure 7 is a schematic diagram of the three-dimensional structure of the present application; Figure 9 is a schematic diagram of the three-dimensional structure of the present application.

[0017] Label name in the figure: 1-fixed soft net, 101-raft, 102-connection plate, 103-buoy, 2-fixed tube, 3-connection rope, 4-weight shell, 5-guide rod, 6-pressing plate, 601-spring, 7-supporting plate, 8-first clasp, 9-fixed plate, 901-guide frame, 10-turning rod, 1001-storage cavity, 1002-through slot, 11-second clasp, 111-sliding ring, 12-fixed sleeve, 13-first sealing ring, 14-air bag, 15-air guide tube, 16-floating plate, 17-sealing cylinder, 18-second sealing ring, 19-arc plate. DETAILED DESCRIPTION

[0018] The application will be further described below with reference to the embodiments shown in the drawings.

[0019] Embodiment 1

[0020] The existing life raft is used, the operator and the life raft body are separated, and the life raft needs to be put into the water first, and the operator cannot directly jump onto the life raft, but jumps into the sea water near the life raft. Under the influence of wind and wave factors, the operator is difficult to approach the life raft, and for the operator who cannot swim, it is more difficult to move to the life raft.

[0021] A sea life-saving raft with a quick release structure, in combination Figures 1-6As shown, including the raft 101, the lower side of the raft 101 is provided with two symmetrical fixed soft net 1, the installation mode between the fixed soft net 1 and the raft 101 can be pasted, which is convenient to install on the raft 101, the lower side of the fixed soft net 1 is fixedly connected with three fixed pipes 2 which are distributed equidistantly, the fixed pipe 2 is a flexible pipe, the fixed pipe 2 is slidably connected with a connecting rope 3, the fixed soft net 1 is fixedly connected with a connecting plate 102, the upper side of the fixed soft net 1 is provided with a float 103, when the two fixed soft nets 1 drive the raft 101 to bend on both sides to the middle, the two fixed soft nets 1 will make the two floats 103 close to each other, the two connecting plates 102 are fixedly connected with a counterweight shell 4, the upper part of the counterweight shell 4 is composed of four vertical rods with a right angle section, after the fixed soft net 1 is installed on the raft 101, the four vertical rods of the counterweight shell 4 will contact with the bottom of the raft 101, the upper side of the connecting plate 102 is rotatably connected with a guide rod 5 for the adjacent connecting rope 3 to pass through, the counterweight shell 4 is slidably connected with a pressing plate 6, the position of the guide rod 5 is lower than that of the pressing plate 6, the lower side of the connecting rope 3 is fixedly connected with the pressing plate 6, two springs 601 which are symmetrically distributed are fixedly connected between the pressing plate 6 and the counterweight shell 4, the upper ends of the left three connecting ropes 3 are fixedly connected with a support plate 7, the upper surface of the support plate 7 is fixedly connected with three first clamps 8 which are equidistantly distributed, the upper ends of the right three connecting ropes 3 are fixedly connected with a fixed plate 9, the fixed plate 9 is slidably and rotatably connected with a rotating rod 10 through two straight plates, the rotating rod 10 is fixedly connected with three second clamps 11 which are equidistantly distributed and correspond to the equidistantly distributed first clamps 8 one by one, the second clamps 11 are used for locking the corresponding first clamps 8, the fixed plate 9 is fixedly connected with three guide frames 901 which are equidistantly distributed and correspond to the equidistantly distributed first clamps 8 one by one, the upper side of the guide frame 901 is provided with a gradually changing opening, which is convenient for the corresponding first clamps 8 to enter the guide frame 901.

[0022] As shown in the figure, Figures 6-8 The front side of the fixed plate 9 is fixedly connected with a fixed sleeve 12 through a first clamp plate, a first sealing ring 13 is sealingly rotatably and slidably connected in the fixed sleeve 12, the front end of the rotating rod 10 is fixedly connected with the first sealing ring 13, an air bag 14 is arranged in the counterweight shell 4 below the pressing plate 6, the air bag 14 and the fixed sleeve 12 are communicated through an air guide pipe 15, the pressing plate 6 extrudes the air bag 14, so that the gas in the air bag 14 enters the fixed sleeve 12 through the air guide pipe 15, a floating plate 16 is slidably connected in the counterweight shell 4, the upper side of the floating plate 16 is fixedly connected with the air bag 14 through a support, wherein the support is composed of a vertical plate and a horizontal plate, the horizontal plate is fixedly connected with the air bag 14, the lower side of the counterweight shell 4 is provided with a first through hole, a first one-way valve is arranged in the first through hole of the counterweight shell 4, seawater enters the counterweight shell 4 through the first one-way valve in the first through hole of the counterweight shell 4, the rotating rod 10 is provided with a spline groove, two sliding rings 111 are slidably connected in the spline groove of the rotating rod 10, and a torsion spring is fixedly connected between the two sliding rings 111 and the two straight plates of the fixed plate 9 respectively.

[0023] When the life raft is needed to be used, the operator will place the raft body 101 vertically with the narrow side as the bottom, and then Figure 1 The upper side of the raft body 101 is tightly attached to the back, the left hand pulls the support plate 7 to drive the three first hooks 8 to approach the waist, and the right hand pulls the fixed plate 9 to drive the three second hooks 11 and the three guide frames 901 to approach each other, then the operator pushes the three first hooks 8 into the three guide frames 901, and reaches the state as shown in the figure. Figure 6 When the three first hooks 8 contact with the three second hooks 11, the three second hooks 11 are squeezed by the adjacent first hooks 8 and jointly drive the rotating rod 10 to rotate clockwise, the rotating rod 10 drives the two sliding rings 111 to rotate clockwise, and the torsional spring on the sliding ring 111 stores energy, when the three first hooks 8 are completely inserted into the adjacent guide frame 901, the torsional force of the torsional spring on the sliding ring 111 is released to drive the sliding ring 111 to rotate counterclockwise, the two sliding rings 111 drive the rotating rod 10 to rotate counterclockwise, and the rotating rod 10 drives the three second hooks 11 to rotate counterclockwise and lock with the adjacent first hooks 8.

[0024] In the process of approaching each other of the support plate 7 and the fixed plate 9, the support plate 7 pulls the pressing plate 6 to move downward through the three connecting ropes 3 on the left side (the connecting ropes 3 slide in the adjacent fixed tubes 2), and the spring 601 is compressed, at this time, the pressing plate 6 is flush with the guide rod 5, then the three connecting ropes 3 pull the three fixed tubes 2 on the left side and drive the left fixed soft net 1 to make the left side of the raft body 101 to bend to the middle, and the fixed plate 9 makes the right side of the raft body 101 to bend to the middle, when the first hooks 8 are locked with the adjacent second hooks 11, the operator places the arms vertically, the elastic force of the spring 601 in the compressed state is released to drive the pressing plate 6 to move upward, so that the raft body 101 is wrapped around the operator through the six connecting ropes 3, and the operator is wrapped around by the raft body 101 through the elastic force of the spring 601, which increases the pressing force between the raft body 101 and the operator, so as to ensure that the operator will not be separated from the raft body 101 in the process of jumping into the water, in the process of the two fixed soft nets 1 driving the raft body 101 to tightly attach to the operator from both sides, the two fixed soft nets 1 drive the two floating buoys 103 to approach each other and finally move to the front side of the operator, the pressing plate 6 will not contact with the air bag 14 in the process of being pulled downward by the six connecting ropes 3, and after the operator is wrapped by the raft body 101, the operator jumps into the sea.

[0025] When the operator jumps into the sea, the operator's face is upward due to the buoyancy of the two floats 103 and the gravity of the counterweight shell 4, ensuring normal breathing of the operator. After the counterweight shell 4 contacts the seawater, the one-way valve in the first through hole of the counterweight shell 4 opens, seawater enters the counterweight shell 4, the floating plate 16 moves upward under the action of buoyancy, the floating plate 16 drives the air bag 14 upward through the support, and finally the air bag 14 contacts the pressing plate 6. Then, the operator's two arms extend to both sides, the six connecting ropes 3 drive the pressing plate 6 to move downward to squeeze the air bag 14. Because of the one-way liquid inlet function of the one-way valve in the first through hole of the counterweight shell 4, the floating plate 16 and the support thereon cannot move downward. The pressing plate 6 squeezes the air bag 14, so that the gas in the air bag 14 is pushed into the fixed sleeve 12 through the air guide pipe 15 and moves the first sealing ring 13 rearward. The pressure on the front side of the first sealing ring 13 in the fixed sleeve 12 increases, the first sealing ring 13 drives the rotating rod 10 to move rearward, the rotating rod 10 drives the three second clamps 11 to move rearward and dislocate with the adjacent first clamps 8. When the second clamps 11 are no longer in contact with the adjacent first clamps 8, the limitation of the first clamps 8 is released, and the left and right sides of the raft body 101 are opened. Finally, the valve body raft 101 rapidly expands to achieve rapid release, and the operator can lie on the raft body 101.

[0026] During the process of jumping into the sea, the body of the operator will shake to squeeze the raft 101, so that the pressing plate 6 moves downward, and the pressing plate 6 will not contact the air bag 14 to cause the first clamps 8 and the second clamps 11 to separate in advance, causing the raft 101 to expand in advance, causing the operator to separate from the raft 101, thereby affecting the personal safety of the operator. The present life raft is a single-person life raft, which is light in weight and convenient for the operator to carry. The first clamps 8 and the second clamps 11 wrap the operator with the raft 101, and the spring 601 drives the pressing plate 6 and the connecting ropes 3 to further lock the operator, so that the operator and the raft 101 jump into the sea synchronously, ensuring that the operator is always in contact with the raft 101, and the operator does not need to jump onto the life raft. After the operator jumps into the sea, the floating buoy 103 and the counterweight shell 4 ensure that the operator's face is upward, ensuring normal breathing of the operator. The arms of the operator extend outward to both sides, so that the air bag 14 is squeezed, the limitation between the first clamps 8 and the second clamps 11 is released, the raft 101 rapidly expands, and the personal safety of the operator is ensured. For some people who cannot swim, the present life raft can also play a role.

[0027] Embodiment 2

[0028] On the basis of embodiment 1, a sea life raft with a rapid release structure is combined Figure 6 , Figure 7 and Figure 9As shown, the rear side of the fixed plate 9 is fixedly connected with a sealing cylinder 17 through a second clamping plate, the rear side of the sealing cylinder 17 is sealingly and rotatably connected with the rotating rod 10, the front side of the sealing cylinder 17 is sealingly and rotatably connected with the rotating rod 10, the rotating rod 10 is fixedly connected with a second sealing ring 18 located in the sealing cylinder 17, the second sealing ring 18 is located at the front side in the sealing cylinder 17, the second sealing ring 18 is sealingly and rotatably connected with the sealing cylinder 17, the rear side of the rotating rod 10 is provided with a storage cavity 1001, the right side of the rotating rod 10 is provided with a through groove 1002 in communication with the storage cavity 1001, the sealing cylinder 17 is fixedly connected with an arc-shaped plate 19 for blocking the through groove 1002, the rotating rod 10 is provided with a plug for blocking the storage cavity 1001, the upper part of the rear side of the sealing cylinder 17 is provided with a second through hole, the second through hole of the sealing cylinder 17 is provided with a second one-way valve, the second one-way valve of the sealing cylinder 17 is opened when the gas in the sealing cylinder 17 is discharged through the second through hole, the lower part of the front side of the fixed sleeve 12 is provided with a third through hole, the third through hole of the fixed sleeve 12 is provided with a third one-way valve, the third one-way valve of the fixed sleeve 12 is opened when the external gas enters the fixed sleeve 12 through the third through hole, the aperture of the third through hole of the fixed sleeve 12 is smaller than the inner diameter of the fixed sleeve 12, when the rotating rod 10 drives the first sealing ring 13 to move leftward, the first sealing ring 13 and the rotating rod 10 can only move slowly, the storage cavity 1001 is filled with a substance for absorbing the gas in the sealing cylinder 17, the substance in the storage cavity 1001 is NaOH solution, the sealing cylinder 17 is filled with high-concentration normal-pressure CO2, the NaOH solution will react with the high-concentration CO2, so that the air pressure in the sealing cylinder 17 is reduced, driving the second sealing ring 18 and the rotating rod 10 to move backward.

[0029] Before using the life raft, the operator opens the plug of the rotating rod 10 in advance, and puts NaOH solution into the storage cavity 1001, then blocks the storage cavity 1001 with the plug of the rotating rod 10, and the through groove 1002 is blocked by the arc plate 19, the storage cavity 1001 is in a sealed state, and high-concentration CO2 is introduced into the sealed cylinder 17. In the process of the first clasp 8 extruding the second clasp 11, the rotating rod 10 rotates clockwise, the through groove 1002 is no longer blocked by the arc plate 19, at the same time, the NaOH solution in the storage cavity 1001 is affected by its own gravity and enters the storage cavity 1001, the NaOH solution absorbs CO2 in the storage cavity 1001, and the pressure in the storage cavity 1001 rapidly decreases. After the first clasp 8 no longer extrudes the second clasp 11, the rotating rod 10 rotates counterclockwise, the arc plate 19 continues to block the through groove 1002, and the pressure in the storage cavity 1001 drives the rotating rod 10 to move backward through the second sealing ring 18. In the process of the rotating rod 10 moving backward, the rotating rod 10 drives the first sealing ring 13 to move backward, the pressure in the front side of the first sealing ring 13 in the fixed sleeve 12 decreases, the third one-way valve in the third through hole of the fixed sleeve 12 opens, and external gas enters the fixed sleeve 12 through the third through hole of the fixed sleeve 12. Because the aperture of the third through hole of the fixed sleeve 12 is small, external gas cannot quickly enter the fixed sleeve 12 through the third through hole, therefore, the first sealing ring 13 will slowly move backward, and the rotating rod 10 will slowly move backward, avoiding the situation that the operator has not jumped into the water, the rotating rod 10 drives the three second clasps 11 to be out of position with the three first clasps 8, thereby opening the raft body 101 in advance, and in the process of the first sealing ring 13 moving backward, the air bag 14 is not compressed, but external gas enters the fixed sleeve 12, thereby reducing the resistance of the rotating rod 10 moving backward, ensuring that the negative pressure in the sealed cylinder 17 is sufficient to drive the first sealing ring 13 to move backward through the second sealing ring 18 and the rotating rod 10. When the operator jumps into the sea, the first sealing ring 13 and the rotating rod 10 slowly move backward, so that the three second clasps 11 are out of position with the three first clasps 8, thereby further ensuring that the raft body 101 can be completely unfolded after the operator jumps into the sea, and assisting the operator to unfold the raft body 101 for the operator with small arm strength. In embodiment 1, the first sealing ring 13 drives the second sealing ring 18 to move backward through the rotating rod 10, and the gas in the sealed cylinder 17 is discharged through the one-way valve of the second through hole. After the operator jumps into the sea and the NaOH solution reacts with CO2 in the sealed cylinder 17, the operator actively expands his arms to drive the rotating rod 10 to move the second sealing ring 18 backward, which also causes the gas in the sealed cylinder 17 to be discharged through the one-way valve of the second through hole.

[0030] The above merely illustrates the embodiments of the present application but should not be taken as limitation. Any equivalent replacement within the principles of the present application should be included in the protection scope of the present application. The contents not described in detail in the present application belong to the prior art known by the skilled in the art.

Claims

1. A marine life raft with a quick-release mechanism, characterized in that: The raft includes a raft body (101), on the lower side of which are symmetrically distributed fixed soft nets (1). The fixed soft nets (1) are fixedly connected to equally spaced fixed pipes (2). Connecting ropes (3) are slidably connected inside the fixed pipes (2). Connecting plates (102) are fixedly connected to the fixed soft nets (1). The symmetrically distributed connecting plates (102) are collectively fixed to a counterweight shell (4). The connecting plates (102) are rotatably connected to guide rods (5) for adjacent connecting ropes (3) to pass over. A pressure plate (6) is slidably connected to the counterweight shell (4). The connecting ropes (3) are close to the... One side of the counterweight shell (4) is fixed to the pressure plate (6), and the connecting ropes (3) distributed at equal intervals on one side are fixed to a support plate (7). The support plate (7) is fixed to a first hook (8) distributed at equal intervals. The connecting ropes (3) distributed at equal intervals on the other side are fixed to a fixing plate (9). The fixing plate (9) is slidably and rotatably connected to a rotating rod (10). The rotating rod (10) is fixed to a second hook (11) distributed at equal intervals and corresponding one-to-one with the first hooks (8) distributed at equal intervals. The second hook (11) is used to lock the corresponding first hook (8).

2. A marine life raft with a quick-release structure according to claim 1, characterized in that: A spring (601) is fixed between the pressure plate (6) and the counterweight shell (4).

3. A marine life raft with a quick-release structure according to claim 1, characterized in that: A float (103) is provided on the side of the fixed soft net (1) away from the counterweight shell (4).

4. A marine life raft with a quick-release structure according to claim 1, characterized in that: The fixing plate (9) is fixed with guide frames (901) that are evenly spaced and correspond one-to-one with the first hooks (8) that are equally spaced. The guide frames (901) are used to position the corresponding first hooks (8).

5. A marine life raft with a quick-release structure according to claim 4, characterized in that: The fixed plate (9) is fixedly connected to the fixed sleeve (12). The fixed sleeve (12) is sealed, rotated and slidably connected to the first sealing ring (13). The first sealing ring (13) is fixedly connected to the rotating rod (10). The counterweight shell (4) is provided with an airbag (14). The pressure plate (6) is used to squeeze the airbag (14). The airbag (14) and the fixed sleeve (12) are connected through an air guide pipe (15). The counterweight shell (4) is slidably connected to the float plate (16). The float plate (16) is fixedly connected to the airbag (14) through a support member. The lower side of the counterweight shell (4) is provided with a first through hole. The first through hole of the counterweight shell (4) is provided with a first one-way valve.

6. A marine life raft with a quick-release structure according to claim 5, characterized in that: The rotating rod (10) is provided with a spline groove, and a sliding ring (111) is slidably connected to the spline groove of the rotating rod (10). A torsion spring is fixed between the sliding ring (111) and the fixed plate (9).

7. A marine life raft with a quick-release structure according to claim 6, characterized in that: A sealing cylinder (17) is fixedly connected to the side of the fixing plate (9) away from the fixing sleeve (12). The sealing cylinder (17) is slidably and rotatably connected to the rotating rod (10). A second sealing ring (18) is fixedly connected to the rotating rod (10) inside the sealing cylinder (17). The second sealing ring (18) is slidably and rotatably connected to the sealing cylinder (17).

8. A marine life raft with a quick-release structure according to claim 7, characterized in that: The rotating rod (10) is provided with a storage cavity (1001), the rotating rod (10) is provided with a through groove (1002) communicating with the storage cavity (1001), the sealing cylinder (17) is fixedly connected with an arc plate (19) for sealing the through groove (1002), the rotating rod (10) is provided with a plug for sealing the storage cavity (1001), the sealing cylinder (17) is provided with a second through hole, the second through hole of the sealing cylinder (17) is provided with a second one-way valve, the fixing sleeve (12) is provided with a third through hole, the third through hole of the fixing sleeve (12) is provided with a third one-way valve, and the storage cavity (1001) is filled with a substance for absorbing the gas in the sealing cylinder (17).

9. A marine life raft with a quick-release structure according to claim 8, characterized in that: The substance in the storage cavity (1001) is NaOH solution, and the sealed cylinder (17) is filled with CO2.

10. A marine life raft with a quick-release structure according to claim 8, characterized in that: The diameter of the third through hole of the fixed sleeve (12) is smaller than the inner diameter of the fixed sleeve (12).

Images