CN111994267B

CN111994267B - Life boat

Info

Publication number: CN111994267B
Application number: CN202010944101.XA
Authority: CN
Inventors: 张愉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2022-05-03
Anticipated expiration: 2040-09-10
Also published as: CN111994267A

Abstract

The invention discloses a lifeboat, which belongs to the technical field of rescue equipment and comprises a U-shaped lifebuoy and a shell; the casing is internally provided with a flight assembly, a navigation assembly, a driving assembly b and a driving assembly a; the flying assembly comprises a flying paddle and a flying shaft; the navigation assembly comprises a navigation paddle and a navigation gear; the driving component a comprises a clutch shaft a and a driving motor a; a clutch gear a and a second plug column a are formed on the clutch shaft a; a second plug hole is formed in the flight shaft; the upper part in the shell is fixedly connected with a power module and a control module. The invention can quickly and accurately reach the side of the person falling into the water by adopting a mode of combining flight and navigation; the U-shaped life buoy can be pressed into water at the opening of the U-shaped life buoy, so that the U-shaped life buoy can be inserted under the body of a person falling into the water; the baffle plate is rotated to enable the person falling into the water and the U-shaped life buoy to be relatively fixed, so that the person falling into the water with a fuzzy consciousness can not actively search or grasp the life buoy, and the rescue time is missed.

Description

Life boat

Technical Field

The invention belongs to the technical field of rescue equipment, and particularly relates to a lifeboat.

Background

Chinese patent document No. CN210882553U discloses a life buoy capable of navigating on water and flying in air, which includes a floatable hollow housing, a first power system for driving the hollow housing to fly in air, a second power system for driving the hollow housing to travel on water, a power lithium ion battery disposed in the hollow housing, an antenna disposed on the hollow housing for data transmission, a high-definition camera disposed on the housing for searching for an object, a GPS positioning system for positioning the life buoy, and a control system for executing all control commands issued by an operator to the life buoy. The utility model discloses combine unmanned aerial vehicle structure and life buoy structure, make the life buoy can fly in the air and navigate by water, under controlling of the person of controlling, the life buoy can be fast and accurate put in by the person of suing and labouring the side, reach the purpose of quick rescue.

Although the patent can quickly and accurately reach the side of a person falling into water, when the person falling into water is in a vague consciousness due to panic or long time of falling into water, the person falling into water cannot actively grab the life buoy or cannot enable the head to be positioned above the water surface after grabbing the life buoy, and the person falling into water cannot be effectively rescued.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the defects in the prior art, the lifeboat is provided.

In order to realize the purpose of the invention, the following technical scheme is adopted for realizing the purpose: a lifeboat comprises a U-shaped lifebuoy and a shell fixedly connected to the outer side of the U-shaped lifebuoy; flying assemblies are fixedly connected to the outer side of the U-shaped life buoy close to four corners in the shell respectively; the lower ends of the outer sides of the two straight edges of the U-shaped life buoy in the shell are fixedly connected with navigation components arranged in parallel respectively.

The opening direction of the U-shaped life buoy is the front part; two driving assemblies b which are respectively used for driving the two flying assemblies positioned at the front part are fixedly connected in the shell; two driving assemblies a which are respectively used for driving the two flying assemblies positioned at the rear part are fixedly connected in the shell; the sailing assembly is driven by the driving assembly a.

The flying assembly comprises flying paddles which are rotatably connected to the four corners inside the shell and a flying shaft in transmission connection with the flying paddles; the rotating shaft of the flying oar is arranged along the longitudinal direction; the navigation subassembly is including rotating to be connected navigation oar in the casing and with navigation oar fixed connection's navigation gear.

The driving assembly a comprises a clutch shaft a which is rotatably connected in the shell and can be in transmission connection with the flying shaft, and a driving motor a which is fixedly connected in the shell and is used for driving the clutch shaft a to rotate; one end of the clutch shaft a close to the driving motor a is formed with a clutch gear a which can be in transmission connection with the navigation gear; a second plug column a is formed at one end of the clutch shaft a close to the flight shaft; and a second plug hole in sliding connection with the second plug column a is formed at one end, far away from the flight propeller, of the flight shaft.

The driving assembly b comprises a driving motor b which is fixedly connected in the shell and can drive the front part of the flying shaft to rotate.

The driving component a has a first position state and a second position state; when the clutch shaft a is located at the first position, the clutch shaft a is farthest away from the driving motor a, the second inserting column a is inserted into the second inserting hole, the clutch shaft a is only in transmission connection with the flying paddle, and the U-shaped life buoy can fly in the air.

When the clutch shaft a is located at the second position, the clutch gear a is in transmission connection with the navigation gear, the clutch shaft a is only in transmission connection with the navigation paddle, and the U-shaped life buoy can navigate on the water surface.

And sliders capable of enabling the clutch shaft a to move from the first position to the second position are connected in the shell in a sliding mode respectively.

The upper part in the shell is fixedly connected with a power module and a control module; the driving motor a, the driving motor b and the power supply module are electrically connected with the control module.

As a preferable scheme: a sliding pipe is formed in the shell; the sliding block is connected in the sliding pipe in a sliding mode; the lower end of the shell is detachably inserted with a water-absorbent resin cylinder body which can be communicated with the sliding pipe; the outer wall of the water-absorbent resin cylinder body can be used for water to pass through; and the water-absorbing resin barrel is internally provided with water-absorbing resin.

A spring which can enable the clutch shaft a to move to a first position is arranged between the clutch shaft a and the driving motor a; the water-absorbing volume of the water-absorbing resin is increased to push the slide block to move the clutch shaft a from the first position to the second position.

As a preferable scheme: the shell is rotatably connected with rotary baffles at two sides of the opening of the U-shaped life buoy respectively; an annular rack is formed at the end part of the rotating baffle close to the outer side of the U-shaped life buoy; the annular rack can be in transmission connection with the driving motor b.

When the driving motor b drives the rotary baffle plates to rotate inwards in opposite directions to a horizontal state, the opening of the U-shaped life buoy is shielded by the rotary baffle plates to form sealing.

The driving assembly b also comprises a clutch shaft b which is rotatably connected in the shell and can be respectively in transmission connection with the two front flying shafts; and a clutch gear b capable of being in transmission connection with the annular rack is formed at one end of the clutch shaft b close to the driving motor b.

The clutch shaft b has a third position state and a fourth position state, and when the clutch shaft b is in the third position, the clutch shaft b is farthest away from the driving motor b; the second inserting column b is located in the second inserting hole, and the driving motor b is only in transmission connection with the flying oar and provides power for the flying oar.

When the clutch shaft b is at the fourth position, when the clutch shaft b is closest to the driving motor b, the clutch gear b is meshed with the annular rack; the driving motor b can seal the opening of the U-shaped life buoy.

An electric push rod capable of enabling the clutch shaft b to move from a third position to a fourth position is fixedly connected in the shell; the electric push rod is electrically connected with the control module.

As a preferable scheme: a first inserting column a is fixedly connected to an output shaft of the driving motor a; a first inserting hole a which is in transmission connection with the first inserting column a all the time is formed at one end of the clutch shaft a close to the driving motor a; the first inserting-connecting column a is connected in the first inserting-connecting hole a in a sliding mode.

The output shaft of the driving motor b is fixedly connected with a first inserting column b; a first inserting hole b which is in transmission connection with the first inserting column b all the time is formed at one end of the clutch shaft b close to the driving motor b; the first inserting-connecting column b is connected in the first inserting-connecting hole b in a sliding mode.

As a preferable scheme: the lower end of the shell is provided with a mounting pipe communicated with the sliding pipe; the water-absorbing resin cylinder is detachably inserted in the mounting pipe; an opening for water to enter the water-absorbing resin cylinder is formed in the middle of the mounting pipe; and the mounting pipe is in threaded connection with a locking nut which is used for keeping the water-absorbent resin cylinder and the mounting pipe fixed.

As a preferable scheme: a transmission gear is rotationally connected in the shell; the transmission gear is in transmission connection with the clutch gear b and the annular rack respectively.

A rotating seat which is rotationally connected with the transmission gear is formed in the shell; and a friction block which is always abutted against the rotating seat is formed on the end surface of the transmission gear.

As a preferable scheme: permanent magnets are fixedly connected to the inner side end portions of the rotating baffles respectively; the magnetic poles at the outer side end of the permanent magnet are different.

As a preferable scheme: a locking part is formed on one side of the rotary baffle plate, which is positioned on the annular rack; a chuck is formed at the end part, far away from the annular rack, of one locking part, and a buckle clamped with the chuck is formed at the end part, far away from the annular rack, of the other locking part; when the clamping head and the buckle are mutually clamped, the opening of the U-shaped life buoy is closed.

As a preferable scheme: an induction switch is arranged on the shell and positioned at the inner side of the opening of the U-shaped life buoy; the inductive switch is electrically connected with the control module.

Compared with the prior art, the invention has the beneficial effects that: in an initial state, the slide block is positioned at the limit position of the inner side of the sliding pipe; the rotating baffle is in a vertical state; the second plug column a is positioned in the second plug hole; the second plug column b is positioned in the second plug hole; at the moment, the driving motor a and the driving motor b are respectively in transmission with the flight paddle; the driving motor b is positioned at the front part of the product.

When the product is used, the U-shaped life buoy is confirmed to be fixed firmly, the power supply module has enough electric quantity, and the water-absorbing resin in the water-absorbing resin cylinder body does not absorb water and expand. The product is placed on a horizontal plane by holding the shell and is started, the remote controller is operated to enable the product to take off, and the control module controls the driving motor a and the driving motor b to rotate. First plug-in connection post a drive first plug-in connection hole a makes separation and reunion axle a synchronous rotation, and second plug-in connection post a drive second plug-in connection hole makes the flight axle rotate for flight gear a drives flight gear b and rotates, and then makes the flight oar rotate and produces ascending lift. Meanwhile, the first inserting column b drives the first inserting hole b to enable the clutch shaft b to synchronously rotate, and the second inserting column b drives the second inserting hole to enable the flying shaft to rotate, so that the flying gear a drives the flying gear b to rotate, and the flying oar rotates to generate upward lift force. The four flying paddles rotate synchronously to enable the shell to take off, and the control module adjusts the rotating speeds of the driving motor a and the driving motor b according to an operation instruction sent by the remote controller so as to adjust the rotating speeds of the four flying paddles, so that the product flies to a preset rescue destination. This process is the same as the four-rotor aircraft control method, and the present invention will not be further described.

After the rescue destination is reached, the shell descends to gradually approach the water surface through an operation instruction sent by the remote controller, and the rotating speed of the flight paddles is further reduced, so that the sailing paddle holding pipe is immersed in the water or only the mounting pipe is immersed in the water (at the moment, the front and rear flight paddles have a rotating speed difference and are in an inclined state, and the shell has a moving component force and is controlled to continuously approach a person falling into the water through the remote controller). The water entering the water-absorbent resin cylinder makes the water-absorbent resin absorb water and expand, so that the volume of the water-absorbent resin is increased, the water-absorbent resin overflows from the mounting pipe and enters the sliding pipe, and the sliding block is pushed to move towards the outside. The sliding block pushes the second thrust bearing to enable the clutch gear a to slide towards the middle part and compress the spring, the second inserting-connecting column a leaves the second inserting-connecting hole, and the clutch gear a is meshed with the sailing transmission gear at the moment. Furthermore, in order to reduce the probability of tooth collision of the two gears, a guide inclined plane is formed at the position, facing the navigation transmission gear, of the gear teeth of the clutch gear a. At the moment, the two rear flying paddles stop rotating, the navigation transmission gear drives the navigation gear to rotate so as to enable the navigation shaft to rotate, and the navigation paddles on the navigation shaft rotate in water to generate thrust of shell motion. At the moment, the two front flying paddles still rotate to generate upward lifting force, the front ends of the two flying paddles slightly leave the water surface upwards, the sailing resistance can be reduced, and the remote controller is continuously used for controlling the person falling into the water in the course of the product.

After approaching the person falling into the water, the control module adjusts the rotating speeds of the two navigation shafts through an operation instruction sent by the remote controller, so that the product moves to the back of the person falling into the water and the opening of the U-shaped life buoy is opposite to the person falling into the water. When the anti-falling life buoy is close to the back of a person falling into water, the two flying paddles at the front end are controlled by the remote controller to rotate reversely to generate downward thrust, so that the front part of the anti-falling life buoy is pressed downwards, the opening of the U-shaped life buoy is submerged in water, the shell is controlled by the remote controller to move forwards, and the two side ends of the U-shaped life buoy penetrate through the armpit of the person falling into water (the U-shaped life buoy enters from the direction of the head when facing upwards or lying over the water, and when the U-shaped life buoy cannot penetrate through the armpit of the person falling into water, the two ends of the straight edge of the U-shaped life buoy 2 penetrate into the lower part of the trunk of the person falling into water). When the inductive switch senses that a person falling into the water enters the U-shaped life buoy, the control module controls the flight paddle at the front end to stop rotating, and then controls the electric push rod to pull the clutch gear b, so that the second inserting column b leaves the second inserting hole, and the clutch gear b is meshed with the transmission gear. Then control module control driving motor b rotates, and separation and reunion gear b drives drive gear for two rotate the inside rotation in opposite directions of baffle, when the mutual magnetism of permanent magnet is inhaled, the dop enters into the buckle this moment, and control module control driving motor b rotates and stops, and control motor b auto-lock makes and rotates the baffle position fixed. The person falling into the water is kept in the U-shaped life buoy to wait for the rescue personnel to approach the rescue.

After the rescue personnel reach, the product is shut down through the remote controller, the control module controls the electric push rod to push the clutch gear b, the second plug column b enters the second plug hole again, and the control module controls the driving motor a and the driving motor b to shut down. And opening the rotating baffle, taking down the product, and rescuing the person falling into the water. And loosening the locking nut, taking out the water-absorbent resin cylinder from the mounting pipe, and cleaning the water-absorbent resin in the mounting pipe and the sliding pipe. The clutch gear a is reset to the initial position under the action of the elastic force of the spring, the second inserting-connecting column a enters the second inserting-connecting hole, and meanwhile, the sliding block returns to the inner side limit position under the pushing of the clutch gear a. Insert new water-absorbing resin barrel by the installation pipe lower extreme to screw up lock nut and make water-absorbing resin barrel and installation pipe relatively fixed, remove this product to the district of placing, charge or change the battery in order to be ready for next use.

According to the invention, through the design of the driving motor a, the second plug column a driven by the driving motor a can drive the second plug hole to rotate the flying shaft, so that the flying oar rotates, and power is provided for flying; when the water-absorbent resin absorbs water and expands, the sliding block is pushed to slide outwards, so that the second inserting column a leaves the second inserting hole, and when the clutch gear a is meshed with the sailing transmission gear, the second inserting column a driven by the driving motor a can rotate the sailing shaft through the transmission of the sailing transmission gear, so that the sailing paddle rotates, and power is provided for sailing.

According to the invention, through the design of the driving motor b, the second plug column b driven by the driving motor b can drive the second plug hole to rotate the flying shaft, so that the flying oar rotates, and power is provided for flying; when the electric push rod pulls the clutch gear b, the second inserting column b leaves the second inserting hole, when the clutch gear b is meshed with the transmission gear, the second inserting column b driven by the driving motor b can enable the rotating baffle to rotate towards the inner side through transmission of the transmission gear, the rotating baffle is kept fixed under the locking state of the driving motor b, a person falling into the water can be kept fixed relative to the U-shaped life buoy, and therefore the purpose of avoiding drowning of the person falling into the water is achieved.

According to the invention, through the design of the water-absorbent resin cylinder, the volume of the water-absorbent resin in the water-absorbent resin cylinder is smaller in a natural state, the inside of the sliding pipe is hollow, the sliding block is positioned at the inner limit position of the sliding pipe, after the water-absorbent resin absorbs water, the volume expands and becomes larger, the water-absorbent resin overflows from the water-absorbent resin cylinder and enters the sliding pipe, the water-absorbent resin is pushed to move towards the outer side of the sliding pipe, the second inserting column a is further separated from the second inserting hole, meanwhile, the clutch gear a is meshed with the sailing transmission gear, and the driving motor a provides power for sailing of the invention. By arranging the water-absorbent resin, the invention can automatically complete the conversion from the flying state to the sailing state in a short time after approaching the water surface, and does not need an additional driving device.

The invention can quickly and accurately reach the side of the person falling into the water by adopting a mode of combining flight and navigation, shortens the rescue time and saves the life of the person falling into the water more quickly; the front end of the U-shaped life buoy can generate downward thrust through the rotation of the flying paddle to enable the U-shaped life buoy to be pressed into water at an opening of the U-shaped life buoy, and further the U-shaped life buoy can be inserted into the body of a person falling into water through the adjustment of the rotating speed of the sailing paddle to actively rescue the person falling into water; according to the invention, the driving motor b can enable the rotating baffle plates to rotate inwards in opposite directions, so that the opening of the U-shaped life buoy is closed, a person falling into the water and the U-shaped life buoy are relatively fixed, a better rescue effect can be still achieved when the person falling into the water with fuzzy consciousness faces, and the situation that the person falling into the water cannot actively search or grasp the life buoy, so that rescue time is missed is avoided.

Drawings

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

Fig. 2 is a schematic cross-sectional structure of the present invention.

Fig. 3 is a schematic exploded view of the present invention.

Fig. 4 and 5 are schematic structural views of the housing of the present invention.

FIG. 6 is a cross-sectional structural schematic of the flight assembly of the present invention.

FIG. 7 is a schematic view of the structure of the sailing assembly of the present invention.

Fig. 8 and 9 are schematic structural views of the driving assembly a of the present invention.

Fig. 10 and 11 are schematic structural views of a driving assembly b of the present invention.

Fig. 12 and 13 are schematic structural views of the holding assembly of the present invention.

Fig. 14 is a schematic structural view of the flying state of the present invention.

FIG. 15 is a schematic view showing the structure of the sailing mode of the present invention.

Fig. 16 and 17 are schematic structural views of the holding assembly according to the present invention in an operating state.

10. A housing; 101. a sliding tube; 1011. a dividing strip; 102. the sailing oar holds the tube; 1021. a water guide support frame; 10211. rotating the hole; 1022. installing a pipe; 103. locking the nut; 104. a sliding groove; 105. a flight paddle containment tube; 1051. a protective net of a flight propeller; 106. rotating the base; 11. a sailing transmission gear; 12. rotating the transmission gear; 121. a friction block; 13. a slider; 14. a water-absorbent resin cylinder; 141. a water-absorbent resin; 15. binding bands; 16. a power supply module; 17. a control module; 18. an inductive switch; 2. a U-shaped life buoy; 3. a holding assembly; 31. rotating the baffle; 311. an annular rack; 312. an annular slide bar; 313. a limiting plate; 32. a permanent magnet; 33. a locking portion; 331; clamping a head; 332. buckling; 4. a flight assembly; 41. a flight axis; 411. a flight gear a; 412. a second plug hole; 413. a limiting ring; 42. a flight paddle; 421. a flight gear b; 5. a drive assembly a; 51. driving a motor a; 511. a first plug-in column a; 52. a clutch shaft a; 521. a clutch gear a; 522. a second plug column a; 523. a first plug hole a; 53. a first thrust bearing; 54. a second thrust bearing; 55. a spring; 6. a drive assembly b; 61. a drive motor b; 611. a first plug column b; 62. a clutch shaft b; 621. a clutch gear b; 622. a second plug column b; 623. a first plug hole b; 63. an electric push rod; 631. pushing the pliers; 6311. a ball bearing; 7. a navigation assembly; 71. a navigation shaft; 72. a sailing paddle; 73. navigation gears.

Detailed Description

Example 1

Referring to fig. 1 to 17, the lifeboat of the present embodiment includes a U-shaped lifebuoy 2 and a housing 10 fixedly connected to the outside of the U-shaped lifebuoy 2; the flying assemblies 4 are respectively and fixedly connected to the outer side of the U-shaped life buoy 2 close to four corners in the shell 10; the lower ends of the shells 10, which are positioned at the outer sides of the two straight edges of the U-shaped life buoy 2, are fixedly connected with sailing components 7 which are arranged in parallel respectively.

A plurality of straps 18 for fixing the U-shaped lifebuoy 2 and the shell 10 are fixedly connected to the outer wall of the shell 10.

The opening direction of the U-shaped life buoy 2 is the front part; two driving assemblies b6 for driving the two front flying assemblies 4 respectively are fixedly connected in the housing 10; two driving assemblies a5 for driving the two rear flying assemblies 4 are fixedly connected in the housing 10; the sailing assembly 7 is driven by the driving assembly a 5.

The flying assembly 4 comprises flying paddles 42 which are rotatably connected to the inside of the shell 10 and are close to four corners, and a flying shaft 41 which is in transmission connection with the flying paddles 42; the rotation axis of the flight paddle 42 is arranged in the longitudinal direction.

Four corners of the shell 10 are respectively provided with a flying paddle holding tube 105 which is longitudinally penetrated; the flying paddles 42 are respectively and rotatably connected in the flying paddle holding pipes 105; the upper end of the flying propeller containing pipe 105 is fixedly connected with a flying propeller protective net 1051; the flight oar protection net 1051 prevents the person falling into the water from contacting the flight oar 42 during rescue, and prevents the person falling into the water from being hurt by the flight oar 42.

The lower end of the flying paddle 42 is fixedly connected with a flying gear b 421; the tail end of the flying shaft 41 close to the flying paddle 42 is fixedly connected with a flying gear a411 in transmission connection with the flying gear b 421; a limit ring 413 is fixedly connected to the flight shaft 41; the limiting ring 413 is abutted to the inner wall of the flight propeller containing pipe 105, so that the flight shaft 41 is stably meshed with the flight propeller 41, and the flight safety is improved.

The sailing assembly 7 comprises a sailing paddle 72 which is rotatably connected in the housing 10 and a sailing gear 73 which is fixedly connected with the sailing paddle 72.

The navigation assembly 7 further comprises a navigation shaft 71 which is rotatably connected in the shell 10; the sailing paddle 72 is fixedly connected to the outer wall of the sailing shaft 71; two symmetrically arranged sailing paddle holding pipes 102 which are respectively and rotatably connected with the sailing shaft 71 are respectively formed at the lower end of the shell 10; a water guide support frame 1021 is fixedly connected to the two ends close to the inside of the sailing paddle holding pipe 102; two ends of the navigation shaft 71 are respectively and rotatably connected to the water guide support frame 1021; the sailing gear 73 is located outside the water guide support 1021.

A rotating hole 10211 which is coaxial with the navigation paddle holding pipe 102 is formed in the middle of the water guide support frame 1021; the navigation shaft 71 is rotatably coupled in the rotation hole 10211.

The driving assembly a5 comprises a clutch shaft a52 which is rotatably connected in the casing 10 and can be in transmission connection with the flying shaft 41, and a driving motor a51 which is fixedly connected in the casing 10 and is used for driving the clutch shaft a52 to rotate; one end of the clutch shaft a52, which is close to the driving motor a51, is formed with a clutch gear a521 which can be in transmission connection with the navigation gear 73; a second plug column a522 is formed at one end of the clutch shaft a52 close to the flying shaft 41; a second inserting hole 412 connected with the second inserting column a522 in a sliding manner is formed at one end of the flying shaft 41 far away from the flying paddle 42.

The end surfaces of the second inserting column a522 and the second inserting hole 412 are of non-circular structures with the same shape, the second inserting column a522 can be located in the second inserting hole 412 to slide along the axis direction, and meanwhile, the transmission relation is kept, and further, in order to facilitate the inserting of the second inserting column a522 and the second inserting hole 412, an arc shape facilitating the inserting is formed on the end surface of the second inserting column a 522.

A navigation transmission gear 11 is rotatably connected to the housing 10, and is in transmission connection with the clutch gear a521 and the navigation gear 73.

The driving assembly b6 includes a driving motor b61 fixedly connected to the housing 10 for driving the front flying axle 41 to rotate.

The driving motor a51 and the driving motor b61 are servo motors or stepping motors, and can accurately control the rotation direction and the angle of the motors.

The driving component a52 has a first position state and a second position state; when the clutch shaft a52 is at the first position, the clutch shaft a52 is farthest away from the driving motor a51, the second inserting-connecting column a522 is inserted into the second inserting-connecting hole 412, the clutch shaft a522 is only in transmission connection with the flying paddle 42, and the U-shaped life buoy 2 can fly in the air.

When the clutch shaft a52 is in the second position, the clutch gear a521 is in transmission connection with the navigation gear 73, the clutch shaft a52 is only in transmission connection with the navigation paddle 72, and the U-shaped life buoy 2 can navigate on the water surface.

The sliders 13 capable of moving the clutch shaft a52 from the first position to the second position are slidably connected in the housing 10, respectively.

A power module 16 and a control module 17 are fixedly connected to the inner upper part of the shell 10; the driving motor a51, the driving motor b61, and the power module 16 are electrically connected with the control module 17.

A sliding tube 101 is formed in the housing 10; the sliding block 13 is connected in the sliding tube 101 in a sliding manner; the lower end of the shell 10 is detachably inserted with a water-absorbent resin cylinder 14 which can be communicated with the sliding pipe 101; the outer wall of the water-absorbing resin cylinder 14 can be used for water to pass through; the water-absorbent resin cylinder 14 is provided with a water-absorbent resin 141 therein.

The water-absorbent resin 141 is a high-molecular water-absorbent resin and can rapidly absorb water and swell within 3 seconds; the water absorbent resin 141 may be formed in a spherical shape, and the water absorbent resin 141 after absorbing water can enter the sliding tube 101.

A spring 55 capable of enabling the clutch shaft a52 to move to the first position is arranged between the clutch shaft a52 and the driving motor a 51; the water absorption volume of the water absorption resin 141 is increased to push the slide block 13 to move the clutch shaft a52 from the first position to the second position.

A first thrust bearing 53 is arranged at one end of the clutch shaft a52 close to the driving motor a 51; one end of the first thrust bearing 53 abuts against the clutch shaft a52, and the other end abuts against the spring 55; the first thrust bearing 53 makes the rotation of the clutch shaft a52 smoother without wearing the spring 55.

A second thrust bearing 54 is arranged between one end of the clutch shaft a52 far away from the driving motor a51 and the slide block 13; the second thrust bearing 54 is sleeved outside the clutch shaft a52, one end of the second thrust bearing 54 abuts against the clutch gear a521, and the other end abuts against the sliding block 13; the second thrust bearing 54 allows the clutch shaft a52 to rotate more smoothly without wearing the slider 13.

In a natural state, the water-absorbent resin 141 is located in the water-absorbent resin cylinder 14, the clutch shaft a52 is located at the first position, and the slider 13 is located at the limit position inside the sliding tube 101.

When the water-absorbent resin 141 absorbs water, the water-absorbent resin 141 expands in volume and enters the sliding tube 101, so that the slider 13 slides outwards to push the clutch shaft a52, and the clutch shaft a52 moves from the first position to the second position.

A separation strip 1011 is formed in the middle of the inner wall of the sliding tube 101; the separation strip 1011 prevents the slide block 13 from entering the inside of the sliding tube 101 and blocking the communication port of the water-absorbent resin cylinder 14; the water-absorbent resin 141 can enter the sliding tube 101 to push the slider 13.

Two sides of the opening of the U-shaped life buoy 2 on the shell 10 are respectively and rotatably connected with a rotating baffle 31; an annular rack 311 is formed at the end part of the rotating baffle plate 31 close to the outer side of the U-shaped life buoy 2; the annular rack 311 can be in transmission connection with the driving motor b 61.

When the driving motor b61 drives the rotary baffles 31 to rotate inwards to a horizontal state, the opening of the U-shaped lifebuoy 2 is blocked by the rotary baffles 31 to form a closed state.

An annular sliding strip 312 is formed on the annular rack 311; the outer wall of the housing 10 is formed with a sliding groove 104 slidably connected to the annular sliding bar 312, so that the driving motor b61 can drive the rotating baffle 31 to rotate while being tightly attached to the housing 10, and the rotating process is more stable and reliable.

The end of the annular sliding strip 312 is formed with a limiting plate 313; when the rotating baffle 31 rotates to the horizontal state, the limit plate 313 abuts against the end of the sliding groove 104, and the rotating baffle 31 cannot rotate continuously.

The driving assembly b6 further comprises a clutch shaft b62 which is rotatably connected in the housing 10 and can be respectively connected with the front two flight shafts 41 in a transmission manner; and a clutch gear b621 capable of being in transmission connection with the annular rack 311 is formed at one end of the clutch shaft b62 close to the driving motor b 61.

The clutch shaft b62 has a third position state and a fourth position state, when the clutch shaft b62 is at the third position, the clutch shaft b62 is farthest away from the driving motor b 61; the second plug column b622 is located in the second plug hole 412, and the driving motor b61 is only in transmission connection with the flying paddle 42 to provide power for the flying paddle 42.

When the clutch shaft b62 is at the fourth position, the clutch shaft b62 is nearest to the driving motor b61, and the clutch gear b621 is engaged with the annular rack 311; the driving motor b61 can close the U-shaped life buoy 2 opening.

The end faces of the second inserting column b622 and the second inserting hole 412 are of non-circular structures with the same shape, and the second inserting column b622 can slide in the second inserting hole 412 along the axis direction and simultaneously keep a transmission relation; further, in order to facilitate the second inserting-connecting column b622 to be inserted into the second inserting-connecting hole 412, an end face of the second inserting-connecting column b622 is formed with an arc shape for facilitating insertion.

An electric push rod 63 capable of enabling the clutch shaft b62 to move from the third position to the fourth position is fixedly connected in the housing 10; the electric push rod 63 is electrically connected with the control module 17.

The end part of the electric push rod 63 is fixedly connected with a push clamp 631; the clutch gear b621 is located in the pushing jaw 631; two inner walls of a jaw of the pushing clamp 631 are respectively connected with a ball 6311 in rolling connection with the clutch gear b 621; the ball 6311 makes the clutch gear b621 rotate smoothly.

The output shaft of the driving motor a51 is fixedly connected with a first inserting column a 511; a first plug hole a523 which is in transmission connection with the first plug column a511 all the time is formed at one end of the clutch shaft a52 close to the driving motor a 51; the end faces of the first inserting column a511 and the first inserting hole a523 are of non-circular structures with the same shape, the first inserting column a511 can be located in the first inserting hole a523 along the axial direction to slide, and meanwhile, the transmission relation is kept, further, in order to facilitate the first inserting column a511 to be inserted into the first inserting hole a523, an arc shape facilitating insertion is formed on the end face of the first inserting column a 511.

In the process that the clutch shaft a52 moves from a far-end limit position to a near-end limit position, the driving motor a51 can drive the clutch shaft a52 all the time, so the driving motor a51 can drive the flight paddle 42 to rotate and drive the sailing paddle 72, and the driving motor a51 has higher practicability.

A first inserting column b611 is fixedly connected to an output shaft of the driving motor b 61; a first inserting hole b623 which is in transmission connection with the first inserting column b611 all the time is formed at one end, close to the driving motor b61, of the clutch shaft b 62; the end surfaces of the first inserting-connecting column b611 and the first inserting-connecting hole b623 are of non-circular structures with the same shape, the first inserting-connecting column b611 can slide in the first inserting-connecting hole b623 along the axial direction, and meanwhile, the transmission relation is kept, further, in order to facilitate the first inserting-connecting column b611 to be inserted into the first inserting-connecting hole b623, an arc shape which facilitates insertion is formed on the end surface of the first inserting-connecting column b 611.

In the process that the clutch shaft b62 moves from a far-end limit position to a near-end limit position, the driving motor b61 can drive the clutch shaft b62 all the time, so that the driving motor b61 can drive the flight paddle 42 to rotate, the rotating baffle 31 can be rotated to a horizontal position and kept, and the driving motor b61 has higher practicability.

A mounting pipe 1022 communicating with the sliding pipe 101 is formed at the lower end of the housing 10; the water-absorbent resin cylinder 14 is detachably inserted into the installation pipe 1022; an opening for water to enter the water-absorbent resin cylinder 14 is formed in the middle of the mounting tube 1022; a lock nut 103 for fixing the water absorbent resin cylinder 14 and the mounting tube 1022 is screwed to the mounting tube 1022.

The locking nuts 103 are respectively in threaded connection with the upper end and the lower end of the opening in the middle of the stabilizing pipe 1022; the diameter of the distal end opening of the lock nut 103 is small, and tightening the lock nut 103 can reduce the diameter of the distal end of the opening of the mounting tube 1022, thereby tightening the water-absorbent resin cylinder 14.

The water-absorbent resin barrel 14 is replaceable and quick to detach, and after one rescue task is completed, the water-absorbent resin barrel can be quickly replaced to prepare for next rescue.

The lower end of the mounting tube 1022 is open so that water can rapidly enter the mounting tube 1022 to contact the water absorbent resin 141; the opening in the middle of the mounting pipe 1022 is opposite to the water inlet hole in the side wall of the water-absorbent resin cylinder 14, when the mounting pipe 1022 completely enters water, the contact area of the water-absorbent resin 141 and the water is larger, and the expansion effect takes effect quickly.

A transmission gear 12 is rotationally connected in the shell 10; the transmission gear 12 is respectively in transmission connection with the clutch gear b621 and the annular rack 311.

A rotating seat 106 which is rotatably connected with the transmission gear 12 is formed in the shell 10; a friction block 121 which is always abutted against the rotating seat 106 is formed on the end surface of the transmission gear 12.

The friction force between the friction block 121 and the rotating seat 106 can keep the relative position of the transmission gear 12 fixed, that is, the relative position of the rotating baffle 31 fixed; meanwhile, the driving motor b61 can drive the transmission gear 12 to rotate, so that the rotating baffle 31 rotates inwards in opposite directions.

Permanent magnets 32 are fixedly connected to the inner side end portions of the rotating baffles 31 respectively; the magnetic poles of the outer ends of the permanent magnets 32 are different.

The permanent magnets 32 are magnetically attracted to each other so that the rotating shutter 31 can be initially brought into a horizontal state and held.

A locking part 33 is formed on one side of the annular rack 311 of the rotary baffle plate 31; a chuck 331 is formed at the end part of one locking part 33 far away from the annular rack 311, and a buckle 332 clamped with the chuck 331 is formed at the end part of the other locking part 33 far away from the annular rack 311; when the clamping head 331 and the buckle 332 are mutually clamped, the opening of the U-shaped life buoy 2 is closed.

The clip 331 and the clip 332 are mutually clipped to further keep the rotating baffle 31 relatively horizontally fixed, so that the opening of the U-shaped life buoy 2 is closed.

An induction switch 18 is arranged on the shell 10 and positioned at the inner side of the opening of the U-shaped life buoy 2; the inductive switch 18 is electrically connected to the control module 17.

When the inductive switch 18 senses that a person falling into a water has entered the U-shaped lifebuoy 2, the control module 17 controls the electric push rod 63 to pull the clutch gear a521, so that the second inserting-connecting column b622 leaves the second inserting-connecting hole 412, and the clutch gear b621 is meshed with the transmission gear 12. Then the control module 17 controls the driving motor b61 to rotate, the clutch gear b621 drives the transmission gear 12, so that the two rotating baffles 31 rotate inwards in opposite directions, when the permanent magnets 32 are magnetically attracted to each other, the chuck 331 enters the buckle 332, the control module 17 controls the driving motor b61 to stop rotating, and the control motor b61 is self-locked to fix the position of the rotating baffles 31. The person falling into the water is kept in the U-shaped life buoy 2 and waits for the rescue personnel to approach the rescue.

In the initial state, the slide block 13 is positioned at the inner limit position of the slide tube 101; the rotating shutter 31 is in a vertical state; second mating post a522 is located within second mating hole 412; the second plug column b622 is located in the second plug hole 412; at the moment, the driving motor a51 and the driving motor b61 are respectively in transmission with the flying oar 42; the driving motor b61 is located at the front of the product.

When the product is used, the U-shaped life buoy 2 is firmly fixed, the power supply module 16 has enough electric quantity, and the water-absorbent resin 141 in the water-absorbent resin cylinder 14 does not absorb water and swell. The product is placed on a horizontal plane by holding the shell 10 and is started, the remote controller is operated to take off the product, and the control module 17 controls the driving motor a51 and the driving motor b61 to rotate. The first inserting column a511 drives the first inserting hole a523 to enable the clutch shaft a52 to rotate synchronously, and the second inserting column a522 drives the second inserting hole 412 to enable the flying shaft 41 to rotate, so that the flying gear a411 drives the flying gear b421 to rotate, and further the flying oar 42 rotates to generate an upward lifting force. Meanwhile, the first inserting column b611 drives the first inserting hole b623 to enable the clutch shaft b62 to rotate synchronously, and the second inserting column b622 drives the second inserting hole 412 to enable the flying shaft 41 to rotate, so that the flying gear a411 drives the flying gear b421 to rotate, and further the flying paddle 42 rotates to generate an upward lifting force. The four flying paddles 42 rotate synchronously to enable the shell 10 to take off, and the control module 17 adjusts the rotating speeds of the driving motor a51 and the driving motor b61 according to an operation command sent by a remote controller, so that the product flies to a preset rescue destination. This process is the same as the four-rotor aircraft control method, and the present invention will not be further described.

After the rescue destination is reached, the shell 10 descends to approach the water surface step by step through an operation command sent by the remote controller, the rotating speed of the flight paddles 42 is further reduced, so that the sailing paddle containing pipe 102 is immersed in the water or only the installation pipe 1022 is immersed in the water (at the moment, the front and the rear flight paddles 42 have a rotating speed difference and are in an inclined state, the invention has a backward movement component force, and the shell 10 is controlled to continuously approach a person falling into the water through the remote controller). The water entering the water-absorbent resin cylinder 14 causes the water-absorbent resin 141 to absorb water and swell, so that the water-absorbent resin 141 increases in volume and overflows from the mounting tube 1022 into the sliding tube 101, thereby pushing the slider 13 to move to the outside. The slider 13 pushes the second thrust bearing 54 to slide the clutch gear a521 toward the middle while the spring 55 is compressed, and the second inserting-connecting column a522 leaves the second inserting-connecting hole 412, at which time the clutch gear a521 is engaged with the travel transmission gear 11. Further, in order to reduce the probability of tooth collision between the two gears, a guide inclined plane is formed on the gear teeth of the clutch gear a521 facing the flight transmission gear 11. At this time, the rear two flight paddles 42 stop rotating, the sailing transmission gear 11 will drive the sailing gear 73 to rotate so as to rotate the sailing shaft 71, and the sailing paddles 72 on the sailing shaft 71 will rotate in the water to generate the thrust of the movement of the housing 10. At this time, the two front flying paddles 42 are still rotated to generate an upward lifting force, the front ends of the two flying paddles slightly leave the water surface upwards, the sailing resistance is reduced, and the user can continue to control the heading drowning person through the remote controller.

After approaching the person falling into the water, the control module 17 adjusts the rotation speed of the two navigation shafts 71 through the operation instruction sent by the remote controller, so that the product moves to the back of the person falling into the water and the opening of the U-shaped life buoy 2 is opposite to the person falling into the water. When the anti-falling life buoy approaches to the back of a person falling into water, the two flying paddles 42 at the front end are controlled by the remote controller to rotate reversely to generate downward thrust, so that the front part of the anti-falling life buoy is pressed downwards, the opening of the U-shaped life buoy 2 is submerged in water, the shell 10 is controlled by the remote controller to move forwards, and the two side ends of the U-shaped life buoy 2 penetrate through the armpits of the person falling into water (the side faces are raised or lie on the water surface and enter from the direction of the head, and when the side faces cannot penetrate through the armpits of the person falling into water, the two ends of the straight edge of the U-shaped life buoy 2 can penetrate into the lower part of the trunk of the person falling into water). When the inductive switch 18 senses that a person falling into the water has entered the U-shaped life buoy 2, the control module 17 controls the flight paddle 42 at the front end to stop rotating, and then controls the electric push rod 63 to pull the clutch gear b621, so that the second inserting-connecting column b622 leaves the second inserting-connecting hole 412, and the clutch gear b621 is meshed with the transmission gear 12. Then the control module 17 controls the driving motor b61 to rotate, the clutch gear b621 drives the transmission gear 12, so that the two rotating baffles 31 rotate inwards in opposite directions, when the permanent magnets 32 are magnetically attracted to each other, the chuck 331 enters the fastener 332, the control module 17 controls the driving motor b61 to stop rotating, and the control motor b61 is self-locked to fix the position of the rotating baffles 31. The person falling into the water is kept in the U-shaped life buoy 2 to wait for the rescue personnel to approach the rescue.

After the rescue personnel arrive, the product is shut down through the remote controller, the control module 17 controls the electric push rod 63 to push the clutch gear b621, so that the second inserting column b622 enters the second inserting hole 412 again, and the control module 17 controls the driving motor a51 and the driving motor b61 to shut down. The rotating baffle 31 is opened, the product is taken down, and people falling into the water are rescued. The lock nut 103 is unscrewed, the water absorbent resin cylinder 14 is taken out from the mounting tube 1022, and the water absorbent resin 141 in the mounting tube 1022 and the sliding tube 101 is cleaned. The clutch gear a521 is reset to the initial position by the elastic force of the spring 55, the second inserting-connecting column a522 enters the second inserting-connecting hole 412, and the sliding block 13 returns to the inner limit position by the pushing of the clutch gear a 521. A new water-absorbent resin cylinder 14 is inserted from the lower end of the mounting tube 1022, and the lock nut 103 is tightened to fix the water-absorbent resin cylinder 14 and the mounting tube 1022 relatively, so that the product is moved to a placement area for charging or replacing the battery for the next use.

According to the invention, through the design of the driving motor a51, the second inserting column a522 driven by the driving motor a51 can drive the second inserting hole 412 to rotate the flying shaft 41, so that the flying paddle 42 rotates, and power is provided for the flying of the invention; when the water-absorbent resin 141 absorbs water and expands, the sliding block 13 is pushed to slide outwards, so that the second inserting column a522 leaves the second inserting hole 412, and meanwhile, when the clutch gear a521 is meshed with the sailing transmission gear 11, the second inserting column a522 driven by the driving motor a51 can rotate the sailing shaft 71 through the transmission of the sailing transmission gear 11, so that the sailing paddle 72 rotates, and power is provided for sailing of the invention.

According to the invention, through the design of the driving motor b61, the second inserting column b622 driven by the driving motor b61 can drive the second inserting hole 412 to rotate the flying shaft 41, so that the flying paddle 42 rotates, and power is provided for the flying of the invention; when the electric push rod 63 pulls the clutch gear b621, so that the second inserting column b622 leaves the second inserting hole 412, and the clutch gear b621 is meshed with the transmission gear 12, the second inserting column b622 driven by the driving motor b61 can enable the rotating baffle 31 to rotate inwards in opposite directions through transmission of the transmission gear 11, and the rotating baffle 31 is kept fixed under the locking state of the driving motor b61, so that a person falling into the water can be kept fixed relative to the U-shaped life buoy 2, and the aim of avoiding drowning of the person falling into the water is fulfilled.

According to the invention, through the design of the water-absorbent resin cylinder 14, the volume of the water-absorbent resin 141 in the water-absorbent resin cylinder 14 is smaller in a natural state, the inside of the sliding tube 101 is hollow, the sliding block 13 is positioned at the inner limit position of the sliding tube 101, after the water-absorbent resin 141 absorbs water, the volume expansion is larger, the water-absorbent resin 141 further overflows from the water-absorbent resin cylinder and enters the sliding tube 10, the sliding tube 13 is pushed to move towards the outer side of the sliding tube 101, the second inserting-connection column a522 is further separated from the second inserting-connection hole 412, meanwhile, the clutch gear a521 is meshed with the sailing transmission gear 11, and the driving motor a51 provides power for sailing of the invention. By arranging the water absorbent resin 141, the invention can automatically complete the conversion from the flying state to the sailing state in a short time after approaching the water surface, and does not need an additional driving device.

The invention can quickly and accurately reach the side of the person falling into the water by adopting a mode of combining flight and navigation, shortens the rescue time and saves the life of the person falling into the water more quickly; the front end of the U-shaped life buoy can generate downward thrust through the rotation of the flying paddle to enable the U-shaped life buoy to be pressed into water at an opening of the U-shaped life buoy, and further the U-shaped life buoy can be inserted into the body of a person falling into water through the adjustment of the rotating speed of the sailing paddle to actively rescue the person falling into water; according to the rescue device, the driving motor b can enable the rotating baffle plates to rotate inwards in opposite directions, so that the opening of the U-shaped life buoy is closed, a person falling into the water and the U-shaped life buoy are relatively fixed, a better rescue effect can be still achieved when the person falling into the water faces the person falling into the water with the fuzzy consciousness, and the situation that the person falling into the water cannot actively find or grasp the life buoy so that rescue time is missed is avoided.

Claims

1. A lifeboat comprises a U-shaped lifebuoy and a shell fixedly connected to the outer side of the U-shaped lifebuoy; the method is characterized in that: flying assemblies are fixedly connected to the outer side of the U-shaped life buoy close to four corners in the shell respectively; the lower ends of the shells, which are positioned at the outer sides of the two straight edges of the U-shaped life buoy, are fixedly connected with navigation components which are arranged in parallel respectively; the opening direction of the U-shaped life buoy is the front part; two driving assemblies b which are respectively used for driving the two flying assemblies positioned at the front part are fixedly connected in the shell; two driving assemblies a which are respectively used for driving the two flying assemblies positioned at the rear part are fixedly connected in the shell; the sailing assembly is driven by the driving assembly a; the flying assembly comprises flying paddles rotatably connected to the inside of the shell and close to four corners, and a flying shaft in transmission connection with the flying paddles; the rotating shaft of the flying oar is arranged along the longitudinal direction; the navigation assembly comprises a navigation paddle which is rotatably connected in the shell and a navigation gear which is fixedly connected with the navigation paddle;

the driving assembly a comprises a clutch shaft a which is rotatably connected in the shell and can be in transmission connection with the flight shaft, and a driving motor a which is fixedly connected in the shell and is used for driving the clutch shaft a to rotate; one end of the clutch shaft a close to the driving motor a is formed with a clutch gear a which can be in transmission connection with the navigation gear; a second plug column a is formed at one end of the clutch shaft a close to the flight shaft; a second inserting hole in sliding connection with the second inserting column a is formed in one end, far away from the flying oar, of the flying shaft; the driving assembly b comprises a driving motor b which is fixedly connected in the shell and can drive the front flying shaft to rotate; the driving component a has a first position state and a second position state; when the clutch shaft a is located at the first position, the clutch shaft a is farthest away from the driving motor a, the second inserting column a is inserted into the second inserting hole, the clutch shaft a is only in transmission connection with the flying paddle, and the U-shaped life buoy can fly in the air;

when the clutch shaft a is in a second position, the clutch gear a is in transmission connection with the navigation gear, the clutch shaft a is only in transmission connection with the navigation paddle, and the U-shaped life buoy can navigate on the water surface; the shell is internally and respectively connected with a sliding block which can enable the clutch shaft a to move from a first position to a second position in a sliding way; the upper part in the shell is fixedly connected with a power supply module and a control module; the driving motor a, the driving motor b and the power supply module are electrically connected with the control module.

2. A lifeboat as claimed in claim 1, wherein: a sliding pipe is formed in the shell; the sliding block is connected in the sliding pipe in a sliding mode; the lower end of the shell is detachably inserted with a water-absorbent resin cylinder body which can be communicated with the sliding pipe; the outer wall of the water-absorbent resin cylinder body can be used for water to pass through; the water-absorbing resin barrel is internally provided with water-absorbing resin;

3. A lifeboat as claimed in claim 1, wherein: the shell is rotatably connected with rotary baffles at two sides of the opening of the U-shaped life buoy respectively; an annular rack is formed at the end part of the rotating baffle close to the outer side of the U-shaped life buoy; the annular rack can be in transmission connection with the driving motor b;

when the driving motor b drives the rotary baffles to rotate inwards in opposite directions to a horizontal state, the opening of the U-shaped lifebuoy is shielded by the rotary baffles to form a closed state;

the driving assembly b also comprises a clutch shaft b which is rotatably connected in the shell and can be respectively in transmission connection with the two front flying shafts; a clutch gear b capable of being in transmission connection with the annular rack is formed at one end of the clutch shaft b close to the driving motor b;

the clutch shaft b has a third position state and a fourth position state, and when the clutch shaft b is in the third position, the clutch shaft b is farthest away from the driving motor b; the second inserting-connecting column b is positioned in the second inserting-connecting hole, and the driving motor b is only in transmission connection with the flying oar and provides power for the flying oar;

when the clutch shaft b is at the fourth position, when the clutch shaft b is closest to the driving motor b, the clutch gear b is meshed with the annular rack; the driving motor b can close the opening of the U-shaped life buoy;

4. A lifeboat as claimed in claim 3, wherein: a first inserting column a is fixedly connected to an output shaft of the driving motor a; a first inserting hole a which is in transmission connection with the first inserting column a all the time is formed at one end of the clutch shaft a close to the driving motor a; the first inserting-connecting column a is connected in the first inserting-connecting hole a in a sliding mode;

5. A lifeboat as claimed in claim 2, wherein: the lower end of the shell is provided with a mounting pipe communicated with the sliding pipe; the water-absorbing resin cylinder is detachably inserted in the mounting pipe; an opening for water to enter the water-absorbing resin cylinder is formed in the middle of the mounting pipe; and the mounting pipe is in threaded connection with a locking nut used for keeping the water-absorbent resin cylinder and the mounting pipe fixed.

6. A lifeboat as claimed in claim 3, wherein: a transmission gear is rotationally connected in the shell; the transmission gear is in transmission connection with the clutch gear b and the annular rack respectively;

7. A lifeboat as claimed in claim 3, wherein: permanent magnets are fixedly connected to the inner side end portions of the rotating baffles respectively; the magnetic poles at the outer side end of the permanent magnet are different.

8. A lifeboat as claimed in claim 3, wherein: a locking part is formed on one side of the rotary baffle plate, which is positioned on the annular rack; a chuck is formed at the end part, far away from the annular rack, of one locking part, and a buckle clamped with the chuck is formed at the end part, far away from the annular rack, of the other locking part; when the clamping head and the buckle are mutually clamped, the opening of the U-shaped life buoy is closed.

9. A lifeboat as claimed in claim 3, wherein: an induction switch is arranged on the shell and positioned at the inner side of the opening of the U-shaped life buoy; the inductive switch is electrically connected with the control module.