An inflatable boat for water rescue

Abstract

The present invention belongs to the technical field of inflatable boats, and relates to an inflatable boat for lifesaving in water. The present invention comprises an airbag body, on which a plurality of parachutes are arranged, and an L-shaped ventilation assembly is arranged inside the airbag body, and one end of the ventilation assembly is located on the inner side of the airbag body. The other end of the ventilation assembly extends above the airbag body, and the parachute is connected to the ventilation assembly through a plurality of connecting pipes. In the process of the parachute driving the airbag body to move downward, the air in the parachute enters the ventilation assembly through the hard pipe and the connecting pipe, and is discharged to the inner side of the airbag body. Under the reaction force of the airflow, the airbag body gradually expands outward. The water-absorbing strip absorbs moisture in the air and gradually expands, the L-shaped connecting rod is separated from the first inclined block, and the air in the connecting pipe enters the airbag body through the rectangular hole to inflate the airbag body, and the air below the airbag body enters the airbag body through the air inlet cover.

Description

Technical Field

[0001] The invention belongs to the technical field of inflatable boats and relates to an inflatable boat for underwater lifesaving. Background Art

[0002] The marine environment is complex and changeable. Once an emergency occurs, timely and effective rescue can maximize the safety of people at sea. Inflatable boats, as an important water rescue tool, are light, easy to carry, and can be inflated quickly. They play an important role in marine rescue operations.

[0003] In order to facilitate the transportation and storage of inflatable boats, general inflatable boats are in a compressed state when not in use. When airdropping for water rescue, the inflatable boat is generally dropped in an uninflated state. After landing, the staff uses equipment to inflate the inflatable boat for use. This is not conducive to the rapid use of the airdropped inflatable boat. The staff cannot use the lifeboat directly after receiving it, which is not conducive to improving the rescue speed.

[0004] In order to solve the above problems, the present invention provides an inflatable boat for underwater lifesaving. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention proposes an inflatable boat for underwater lifesaving.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: an inflatable boat for underwater lifesaving, comprising an airbag body, on which a plurality of parachutes are arranged, a plurality of L-shaped ventilation components are arranged in the airbag body, and the ventilation components correspond to the parachutes one by one; one end of the ventilation component is located on the inner side of the airbag body and is connected to the outside; the other end of the ventilation component extends to the upper side of the airbag body, and the parachutes are connected to the corresponding ventilation components through a plurality of connecting pipes, and the parachutes are fixed with hard pipes, and the hard pipes are connected to the ventilation components through the connecting pipes; a second baffle is elastically and slidably arranged in the ventilation component, and the lower end of the second baffle is fixedly connected to the first baffle through a cover plate, a rectangular hole is opened on the first baffle, and an air outlet is opened on the ventilation component; a detachable water absorption strip is arranged in the ventilation component, and a limit position assembly is arranged between the water absorption strip and the second baffle;

[0007] When the parachute is falling, the air in the initial parachute enters the ventilation assembly through the hard tube and the connecting tube, and flows out through the ventilation assembly. Under the recoil of the airflow, the airbag body gradually unfolds; the water absorption strip gradually absorbs the moisture in the air of the ventilation assembly and gradually expands and pushes the limit assembly to move. When the limit assembly is separated from the second baffle, the second baffle moves upward, and the second baffle blocks the air outlet end of the ventilation assembly. At the same time, the rectangular hole is connected with the air outlet, and the air in the ventilation assembly enters the airbag body through the rectangular hole to inflate the airbag body.

[0008] Furthermore, an air intake hood is provided at the lower end of the airbag body, and a first one-way valve is provided in the air intake hood. Initially, the cover plate blocks the air intake hood. When the second baffle moves upward, the cover plate moves upward, the air intake hood opens, and air enters the airbag body through the air intake hood.

[0009] Furthermore, the ventilation assembly includes a fixed tube, a connecting tube and a guide tube; the fixed tube is fixedly connected to the airbag body, the upper end of the fixed tube extends to the outside of the airbag body and is connected to the connecting tube; the connecting tube is L-shaped, the lower end of the fixed tube is located in the airbag body and fixedly connected to one end of the connecting tube, and the other end of the connecting tube is fixedly connected to the guide tube; an exhaust port is opened on the inner side of the airbag body, and the end of the guide tube facing away from the connecting tube is connected to the exhaust port; the air outlet is opened on the connecting tube.

[0010] Further, the limiting assembly includes a first inclined block and a second inclined block; an L-shaped connecting rod is fixedly connected to the upper end of the second baffle, and the L-shaped connecting rod extends into the connecting pipe; a leak cover is fixedly installed in the airbag body, a water absorbent strip is installed in the leak cover, and the second inclined block is located above the water absorbent strip and is slidably arranged in the leak cover; the first inclined block is horizontally elastically slidably installed on the inner wall of the connecting pipe, and a first inclined surface is arranged at the lower end of the first inclined block, and the first inclined surface cooperates with the upper end of the second inclined block; a hook is arranged at one end of the first inclined block close to the L-shaped connecting rod, and one end of the L-shaped connecting rod extends into the hook to limit the L-shaped connecting rod;

[0011] The water absorbing strip absorbs water and expands, pushing the second inclined block to move upward, and the second inclined block pushes the first inclined block to move away from the L-shaped connecting rod, thereby separating the first inclined block from the L-shaped connecting rod, and then the second baffle moves upward.

[0012] Furthermore, a mounting opening connected to the leak hole cover is provided on the connecting pipe, a mounting plate is provided at the mounting opening, and the mounting plate is connected to the connecting pipe by screws.

[0013] Furthermore, a threaded sleeve is installed at a position corresponding to the installation opening on the airbag body, the threaded sleeve is communicated with the outside, and a screw plug is threadedly connected to the threaded sleeve.

[0014] Furthermore, a plurality of ropes are fixedly connected to the bottom end of the airbag body, and a counterweight is fixedly connected to one end of the rope away from the airbag body.

[0015] Furthermore, a groove is provided in the middle of the inner wall of the parachute, and one end of the hard tube away from the connecting tube is connected to the groove.

[0016] Furthermore, a fixing plate is fixed on the outer wall of the connecting pipe, and a second spring is fixedly connected between the fixing plate and the cover plate.

[0017] Furthermore, a sliding groove is horizontally opened on the inner wall of the connecting pipe, the first inclined block is slidably connected to the connecting pipe through the sliding groove, and a first spring is fixedly connected between the first inclined block and the inner wall of the connecting pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects: when the parachute drives the airbag body to move downward, the air in the parachute enters the ventilation assembly through the hard tube and the connecting tube, and is discharged to the inside of the airbag body. Under the reaction force of the airflow, the airbag body gradually expands outward to facilitate subsequent inflation.

[0019] During the downward movement of the airbag body, when air flows through the connecting pipe, the water-absorbing strip absorbs moisture in the air and gradually expands. The water-absorbing strip pushes the second inclined block to move upward, and the second inclined block pushes the first inclined block to move away from the L-shaped connecting rod until the L-shaped connecting rod is separated from the first inclined block. Then, under the action of the second spring, the second baffle, the cover plate and the first baffle move upward, and the second baffle blocks the guide tube, and the air outlet and the air inlet cover are opened. The air in the connecting pipe enters the airbag body through the rectangular hole to inflate the airbag body, and the air below the airbag body enters the airbag body through the air inlet cover to speed up the inflation of the airbag body.

[0020] When the inflatable boat reaches the rescue location, it has been inflated and can be put into use immediately, which helps to improve rescue efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a cross-sectional view of a parachute in the present invention;

[0023] Figure 3 The present invention Figure 2 A magnified view of part A;

[0024] Figure 4 The present invention Figure 2 A magnified view of part B;

[0025] Figure 5 is a cross-sectional view of the ventilation assembly of the present invention;

[0026] Figure 6 The present invention Figure 5 Enlarged view of part C;

[0027] Figure 7 It is a cross-sectional view of the connecting pipe in the present invention

[0028] Figure 8 The present invention Figure 7 A magnified view of the D portion;

[0029] Fig. 9 It is a structural schematic diagram of the threaded sleeve in the present invention;

[0030] Fig.10 It is a schematic diagram of the external structure of the connecting pipe in the present invention;

[0031] Fig.11 is a schematic structural diagram of the second baffle in the present invention;

[0032] Fig.12 It is a schematic diagram of the state of the second baffle after the air outlet is opened in the present invention.

[0033] In the figure: 1. airbag body; 2. parachute; 3. connecting pipe; 4. fixing pipe; 5. exhaust port; 6. screw plug; 7. rope; 8. counterweight; 9. first one-way valve; 10. air inlet cover; 11. guide pipe; 12. connecting pipe; 13. second one-way valve; 14. hard pipe; 15. L-shaped connecting rod; 16. first inclined block; 17. first spring; 18. first baffle; 19. rectangular hole; 20. second baffle; 21. threaded sleeve; 22. first inclined surface; 23. second inclined surface; 24. second inclined block; 25. slide groove; 26. cover plate; 27. fixing plate; 28. second spring; 29. ​​leak cover; 30. mounting block; 31. water absorption strip; 32. mounting plate; 33. screw. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-Figure 12As shown, the technical solution adopted by the present invention is as follows: an inflatable boat for water lifesaving includes an airbag body 1, on which a plurality of parachutes 2 are arranged, and the plurality of parachutes 2 are spaced apart at the upper end of the airbag body 1. A plurality of ventilation components are fixedly installed in the airbag body 1. The ventilation component is L-shaped, the upper end of the ventilation component extends above the airbag body 1, and the other end of the ventilation component is connected to the outside and close to the inner side of the airbag body 1. The plurality of ventilation components correspond to the plurality of parachutes 2 one by one. The parachute 2 is installed on the corresponding ventilation component through a connecting pipe 3. A plurality of hard tubes 14 are fixedly installed on the inner wall of the parachute 2, a groove is provided in the middle of the parachute 2, one end of the hard tube 14 is connected to the groove, and the other end of the hard tube 14 is connected to the connecting pipe 3 and fixedly connected to the connecting pipe 3. The lower end of the connecting pipe 3 is connected to the ventilation component. When the parachute 2 is falling, the air in the parachute 2 enters the ventilation assembly through the hard tube 14 and the connecting tube 3, and then flows out. Under the recoil effect of the airflow, the airbag body 1 gradually unfolds.

[0036] In this embodiment, seven connecting tubes 3 are arranged on each parachute 2, and the seven connecting tubes 3 are evenly distributed along the circumference of the axis of the parachute 2. In this embodiment, there are five parachutes 2, and the five parachutes 2 are arranged above the airbag body 1 at intervals, and the positions of the five parachutes 2 should be reasonably arranged so that the airbag body 1 is subjected to balanced force.

[0037] The ventilation assembly includes a fixed tube 4, a connecting tube 12 and a guide tube 11. The fixed tube 4 is fixedly connected to the airbag body 1, and the upper end of the fixed tube 4 extends outside the airbag body 1 and is connected to the connecting tube 3. The top of the fixed tube 4 is in a closed state. The connecting tube 12 is L-shaped, and the lower end of the fixed tube 4 is located in the airbag body 1 and is fixedly connected to one end of the connecting tube 12 and is connected to the connecting tube 12, and the other end of the connecting tube 12 is fixedly connected to the guide tube 11 and is connected to the guide tube 11. An exhaust port 5 is provided on the inner side of the airbag body 1, and one end of the guide tube 11 away from the connecting tube 12 is connected to the exhaust port 5. A second one-way valve 13 is installed in the fixed tube 4. The air in the parachute 2 enters the fixed tube 4 through the hard tube 14 and the connecting tube 3 in turn, and then is discharged through the connecting tube 12, the guide tube 11, and the exhaust port 5. During the process of air being discharged through the exhaust port 5, the reaction force of the airflow causes the airbag body 1 to gradually unfold.

[0038] A second baffle 20 is elastically slidably disposed up and down in the airbag body 1, and the second baffle 20 is disposed vertically. The upper end of the second baffle 20 slides through the lower end of the connecting tube 12, and the second baffle 20 moves upward and extends into the connecting tube 12 to block the bent portion of the connecting tube 12, and further blocks the guide tube 11, so that the air in the connecting tube 12 cannot enter the guide tube 11.

[0039] The lower end of the connecting pipe 12 is fixedly connected with a cover plate 26. The outer wall of the connecting pipe 12 is fixedly connected with a fixing plate 27, and a second spring 28 is fixedly connected between the fixing plate 27 and the cover plate 26.

[0040] An air intake cover 10 is vertically mounted at the lower end of the airbag body 1, and a first one-way valve 9 is mounted in the air intake cover 10, so that outside air can enter the airbag body 1 through the air intake cover 10 and the first one-way valve 9. When the upper end of the second baffle plate 20 is located at the lower end of the connecting pipe 12, the cover plate 26 blocks the air intake cover 10.

[0041] The first baffle 18 is fixedly mounted on the upper end surface of the cover plate 26. The first baffle 18 is vertically arranged, and a rectangular hole 19 is opened at the lower part of the first baffle 18. An air outlet is opened on the side of the connecting pipe 12 away from the guide pipe 11. When the second baffle 20 is at the bottom end of the connecting pipe 12, the guide pipe 11 is in an open state, the cover plate 26 blocks the air inlet cover 10, and the first baffle 18 blocks the air outlet. At this time, the air in the fixed pipe 4 enters the guide pipe 11 through the connecting pipe 12.

[0042] When the second baffle 20 moves upward to block the guide tube 11, the cover plate 26 moves upward to be separated from the air inlet cover 10, and the first baffle 18 moves upward to make the air outlet communicate with the rectangular hole 19, and the connecting tube 12 communicates with the airbag body 1. The air in the fixed tube 4 enters the airbag body 1 through the connecting tube 12 and the rectangular hole 19 to inflate the airbag body 1. At the same time, the air below the airbag body 1 enters the airbag body 1 through the air inlet cover 10 and the first one-way valve 9 to inflate the airbag body 1.

[0043] A leak cover 29 is fixedly installed in the airbag body 1, and a water absorption strip 31 is arranged in the leak cover 29. A limit assembly is arranged between the water absorption strip 31 and the second baffle 20. Initially, under the action of the limit assembly, the upper end of the second baffle 20 is at the bottom end of the connecting pipe 12, and the second spring 28 is in a compressed state. When air passes through the connecting assembly, the water absorption strip 31 gradually absorbs water vapor in the air and expands and drives the limit assembly to move, thereby causing the second baffle 20 to detach from the limit assembly. After the second baffle 20 detaches from the limit assembly, under the action of the second spring 28, the second baffle 20 moves upward.

[0044] The limiting assembly includes a first inclined block 16 and a second inclined block 24. An L-shaped connecting rod 15 is fixedly connected to the upper end of the second baffle 20, and the L-shaped connecting rod 15 extends into the connecting pipe 12. The first inclined block 16 is horizontally elastically slidably installed on the inner wall of the connecting pipe 12. Specifically, a slide groove 25 is horizontally opened on the inner wall of the connecting pipe 12, and the first inclined block 16 is horizontally slidably connected to the connecting pipe 12 through the slide groove 25. A mounting block 30 is fixedly connected to the inner wall of the connecting pipe 12, and a first spring 17 is fixedly connected between the first inclined block 16 and the mounting block 30. The L-shaped connecting rod 15 and the mounting block 30 are respectively arranged on both sides of the leak hole cover 29.

[0045] The lower end of the first inclined block 16 is provided with a first inclined surface 22, and the upper end of the first inclined surface 22 is inclined toward the direction close to the L-shaped connecting rod 15. The second inclined block 24 is located above the water absorbing strip 31 and is slidably arranged in the leak hole cover 29, and the upper end of the second inclined block 24 is slidably matched with the first inclined surface 22.

[0046] A hook is provided at one end of the first inclined block 16 close to the L-shaped connecting rod 15, and the first inclined block 16 limits the L-shaped connecting rod 15 through the hook to prevent the L-shaped connecting rod 15 from moving upward. A second inclined surface 23 is provided at one end of the first inclined block 16 close to the L-shaped connecting rod 15, and the lower end of the second inclined surface 23 is inclined in a direction close to the L-shaped connecting rod 15. When one end of the L-shaped connecting rod 15 is inserted into the hook of the first inclined block 16, the second inclined surface 23 is located above the L-shaped connecting rod 15.

[0047] The water-absorbing strip 31 absorbs water and expands, pushing the second inclined block 24 to move upward, and the second inclined block 24 pushes the first inclined block 16 to move away from the L-shaped connecting rod 15, thereby separating the first inclined block 16 from the L-shaped connecting rod 15. Then, under the action of the second spring 28, the second baffle 20, the cover plate 26, the first baffle 18 and the L-shaped connecting rod 15 move upward.

[0048] The connecting pipe 12 is provided with a mounting opening connected to the leak hole cover 29, and a mounting plate 32 is provided at the mounting opening, and the mounting plate 32 is connected to the connecting pipe 12 by screws 33. A threaded sleeve 21 is installed at a position corresponding to the mounting opening on the airbag body 1, and the threaded sleeve 21 is connected to the outside, and a screw plug 6 is threadedly connected to the threaded sleeve 21. The screw plug 6 seals the threaded sleeve 21.

[0049] The lower end of the airbag body 1 is fixedly connected with a plurality of ropes 7, and the ends of the ropes 7 facing away from the airbag body 1 are fixedly connected with a counterweight 8. When the airbag body 1 falls, the counterweight 8 makes the airbag body 1 horizontal, and then makes the air inlet cover 10 vertically downward.

[0050] Working principle: Initially, the airbag body 1 is in an uninflated state, i.e., in a compressed state. One end of the L-shaped connecting rod 15 is inserted into the hook of the first inclined block 16, the first inclined block 16 limits the L-shaped connecting rod 15, the second spring 28 is in a compressed state, the upper end of the second baffle 20 is at the bottom end of the connecting pipe 12, the first baffle 18 blocks the air outlet on the connecting pipe 12, and the cover plate 26 blocks the air inlet cover 10.

[0051] When in use, the compressed airbag body 1 is dropped from a high altitude, and the parachute 2 gradually opens and drives the airbag body 1 to gradually move downward.

[0052] When the parachute 2 moves downward, it is subject to air resistance, and the air hits the top wall of the parachute 2. The air enters the hard tube 14 through the groove, and then enters the fixed tube 4 through the connecting tube 3. Then, the air flows from the fixed tube 4 through the connecting tube 12 and the guide tube 11 in sequence and is discharged from the exhaust port 5. When the air is discharged from the exhaust port 5, the airbag body 1 gradually expands outward under the reaction force of the airflow, which facilitates the subsequent inflation of the airbag body 1.

[0053] When air flows through the connecting pipe 12, the water-absorbing strip 31 in the leak cover 29 absorbs moisture in the air and gradually expands. And as the airbag body 1 gradually moves downward. The lower the altitude and the closer to the water surface, the greater the humidity of the air. The greater the humidity of the air entering the ventilation component, the more moisture the water-absorbing strip 31 absorbs, and the faster the water-absorbing strip 31 expands. The expanded water-absorbing strip 31 pushes the second inclined block 24 to move upward, and the second inclined block 24 pushes the first inclined block 16 to gradually move away from the L-shaped connecting rod 15.

[0054] Until the first inclined block 16 is separated from the L-shaped connecting rod 15, then under the action of the second spring 28, the second baffle 20, the cover plate 26, the first baffle 18 and the L-shaped connecting rod 15 all move upward. The second baffle 20 moves upward to cover the bent portion of the connecting pipe 12, thereby blocking the guide pipe 11. The first baffle 18 moves upward to connect the air outlet with the rectangular hole 19. Then the air in the parachute 2 flows through the hard tube 14, the connecting tube 3, and the fixed tube 4 in sequence into the dynamic connecting tube 12, and enters the airbag body 1 through the rectangular hole 19 to inflate the airbag body 1.

[0055] The cover plate 26 moves upward to open the air inlet cover 10. When the airbag body 1 moves downward, the air below the airbag body 1 enters the airbag body 1 through the air inlet cover 10, accelerating the inflation speed of the airbag body 1. When the airbag body 1 falls to the rescue position, the airbag body 1 has been fully inflated and can be put into use immediately, which is conducive to improving the rescue efficiency.

[0056] A hidden bag may also be provided on the airbag body 1 , into which supplies may be placed in advance, and when the rescued person is on the airbag body 1 , the supplies carried in the hidden bag may be used.

[0057] After use, the water absorbing strip 31 needs to be replaced for next use. First, screw the plug 6 and remove the plug 6 from the threaded sleeve 21, and the air in the airbag body 1 flows out through the threaded sleeve 21.

[0058] Then unscrew the screw 33, remove the mounting plate 32, open the mounting port, take out the expanded water-absorbing strip 31 from the leak cover 29, and install a new water-absorbing strip 31. Pull the L-shaped connecting rod 15 downward, so that the lower end of the L-shaped connecting rod 15 passes over the second inclined surface 23 and is clamped into the hook of the first inclined block 16, and the first inclined block 16 limits the L-shaped connecting rod 15. Then install the mounting plate 32 and fix it with the screw 33. After that, exhaust the air in the airbag body 1 and screw the screw plug 6.

[0059] When the L-shaped connecting rod 15 moves downward, it drives the second baffle 20 , the first baffle 18 and the cover plate 26 to move downward, so that the cover plate 26 blocks the air inlet hood 10 , the first baffle 18 blocks the air outlet, and the guide pipe 11 is connected to the connecting pipe 12 .

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inflatable boat for underwater lifesaving, comprising an airbag body (1), on which a plurality of parachutes (2) are arranged, characterized in that: The airbag body (1) is provided with a plurality of L-shaped ventilation components, and the ventilation components correspond to the parachutes (2) one by one; one end of the ventilation component is located on the inner side of the airbag body (1) and is connected to the outside; the other end of the ventilation component extends above the airbag body (1), and the parachute (2) is connected to the corresponding ventilation component through a plurality of connecting pipes (3); the parachute (2) is fixed with a hard pipe (14), and the hard pipe (14) is connected to the ventilation component through the connecting pipe (3); a second baffle (20) is elastically slidably provided in the ventilation component, and the lower end of the second baffle (20) is fixedly connected to the first baffle (18) through a cover plate (26), and a rectangular hole (19) is provided on the first baffle (18), and an air outlet is provided on the ventilation component; a detachable water absorption strip (31) is provided in the ventilation component, and a limit position component is provided between the water absorption strip (31) and the second baffle (20); During the falling process of the parachute (2), the air in the initial parachute (2) enters the ventilation assembly through the hard tube (14) and the connecting tube (3), and flows out through the ventilation assembly. Under the recoil effect of the airflow, the airbag body (1) gradually unfolds; the water absorption strip (31) gradually absorbs the moisture in the air in the ventilation assembly and gradually expands and pushes the limit assembly to move. When the limit assembly is separated from the second baffle (20), the second baffle (20) moves upward, and the second baffle (20) blocks the air outlet end of the ventilation assembly. At the same time, the rectangular hole (19) is connected to the air outlet. The air in the ventilation assembly enters the airbag body (1) through the rectangular hole (19) to inflate the airbag body (1).

2. The inflatable boat for underwater lifesaving according to claim 1, characterized in that: An air intake hood (10) is arranged at the lower end of the airbag body (1), and a first one-way valve (9) is arranged in the air intake hood (10). Initially, the cover plate (26) blocks the air intake hood (10). When the second baffle plate (20) moves upward, the cover plate (26) moves upward, the air intake hood (10) opens, and air enters the airbag body (1) through the air intake hood (10).

3. The inflatable boat for underwater lifesaving according to claim 1, characterized in that: The ventilation assembly comprises a fixed tube (4), a connecting tube (12) and a guide tube (11); the fixed tube (4) is fixedly connected to the airbag body (1), the upper end of the fixed tube (4) extends outside the airbag body (1) and is connected to the connecting tube (3); the connecting tube (12) is L-shaped, the lower end of the fixed tube (4) is located inside the airbag body (1) and is fixedly connected to one end of the connecting tube (12), and the other end of the connecting tube (12) is fixedly connected to the guide tube (11); an exhaust port (5) is provided on the inner side of the airbag body (1), and the end of the guide tube (11) facing away from the connecting tube (12) is connected to the exhaust port (5); and an exhaust port is provided on the connecting tube (12).

4. The inflatable boat for underwater lifesaving according to claim 3, characterized in that: The limiting assembly comprises a first inclined block (16) and a second inclined block (24); the upper end of the second baffle (20) is fixedly connected to an L-shaped connecting rod (15), and the L-shaped connecting rod (15) extends into the connecting pipe (12); a leakage hole cover (29) is fixedly installed in the airbag body (1), a water absorption strip (31) is installed in the leakage hole cover (29), and the second inclined block (24) is located above the water absorption strip (31) and is slidably arranged in the leakage hole cover (29); the first inclined block (16) is horizontally elastically slidably installed on the inner wall of the connecting pipe (12), and the lower end of the first inclined block (16) is provided with a first inclined surface (22), and the first inclined surface (22) cooperates with the upper end of the second inclined block (24); a hook is provided at one end of the first inclined block (16) close to the L-shaped connecting rod (15), and one end of the L-shaped connecting rod (15) extends into the hook to limit the L-shaped connecting rod (15); The water absorption strip (31) absorbs water and expands, pushing the second inclined block (24) to move upward, and the second inclined block (24) pushes the first inclined block (16) to move in a direction away from the L-shaped connecting rod (15), thereby separating the first inclined block (16) from the L-shaped connecting rod (15), and then the second baffle (20) moves upward.

5. The inflatable boat for underwater lifesaving according to claim 4, characterized in that: The connecting pipe (12) is provided with a mounting opening which is connected with the leak hole cover (29), and a mounting plate (32) is arranged at the mounting opening, and the mounting plate (32) is connected with the connecting pipe (12) by means of screws (33).

6. The inflatable boat for underwater lifesaving according to claim 5, characterized in that: A threaded sleeve (21) is installed at a position corresponding to the installation opening on the airbag body (1); the threaded sleeve (21) is communicated with the outside, and a screw plug (6) is threadedly connected to the threaded sleeve (21).

7. The inflatable boat for underwater lifesaving according to claim 1, characterized in that: A plurality of ropes (7) are fixedly connected to the bottom end of the airbag body (1), and a counterweight (8) is fixedly connected to one end of the rope (7) away from the airbag body (1).

8. The inflatable boat for underwater lifesaving according to claim 1, characterized in that: A groove is provided in the middle of the inner wall of the parachute (2), and one end of the hard tube (14) away from the connecting tube (3) is connected to the groove.

9. The inflatable boat for underwater lifesaving according to claim 3, characterized in that: A fixing plate (27) is fixed on the outer wall of the connecting pipe (12), and a second spring (28) is fixedly connected between the fixing plate (27) and the cover plate (26).

10. The inflatable boat for underwater lifesaving according to claim 4, characterized in that: A sliding groove (25) is horizontally provided on the inner wall of the connecting pipe (12), the first inclined block (16) is slidably connected to the connecting pipe (12) via the sliding groove (25), and a first spring (17) is fixedly connected between the first inclined block (16) and the inner wall of the connecting pipe (12).

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