Water rescue boat and working method thereof

Abstract

The invention discloses a water rescue boat and a working method thereof, and relates to the field of water rescue, the water rescue boat comprises a bow and two boat wings, the boat wings are arranged below the bow and fixedly connected with the bow, the two boat wings are oppositely arranged, a rescue platform is arranged between the two boat wings, the rescue platform comprises a first-stage rescue frame and a second-stage rescue frame, and the first-stage rescue frame and the second-stage rescue frame are fixedly connected with the bow. The first end of the first-stage rescue frame is connected with the ship wings through a first-stage rotating device, the first end of the second-stage rescue frame is connected with the second end of the first-stage rescue frame through a second-stage rotating device, a water surface information collecting device is arranged on the ship head, and an underwater information collecting device is arranged at the second end of the second-stage rescue frame and used for collecting water surface and underwater information in real time. The water rescue boat can run without a driver on the boat, the rescue platform can adopt a proper rescue mode, rescue personnel can rescue without following the boat, preparation time is not needed when a dangerous case occurs, and the rescue platform can overcome a complex underwater environment through self movement to rescue drowning people losing action ability.

Description

Technical Field

[0001] The invention relates to the field of underwater rescue, and in particular to a rescue boat and a working method of an underwater rescue boat. Background Art

[0002] A rescue boat refers to a boat specially used for emergency rescue in water. According to the use environment and function, rescue boats can be divided into two categories: marine rescue boats and water rescue boats. Among them, water rescue boats are mainly used to rescue distress incidents in shallow waters such as lakes, rivers, and coastlines. They are usually small and light, which is convenient for quick rescue. One method known to the inventor is to set a telescopic ladder at the bottom of the water rescue boat. When rescuing a drowning person, the water rescue boat first reaches the location of the drowning person, and then lowers the telescopic ladder. The rescuers then reach the location of the drowning person via the telescopic ladder and salvage the drowning person out of the water. There are some problems with this rescue method. First, the rescuers need to wear professional diving suits for rescue. Therefore, when they find a dangerous situation, the rescuers have to prepare and cannot set out for rescue immediately. Secondly, the underwater environment may limit the actions of the rescuers, and even with the assistance of a telescopic ladder, salvage may be difficult. Summary of the invention

[0003] The purpose of the present invention is to provide a water rescue boat to solve the problems existing in the above-mentioned prior art. The surface information collection device and the underwater information collection device can collect surface and underwater information in real time, and the water rescue boat can be driven without a driver on board. When rescuing a person who falls into the water, the first-level rescue frame and the second-level rescue frame can adopt appropriate rescue methods according to the status of the person who falls into the water, and shallow water rescue can be achieved without the need for rescue personnel to follow the boat. When a dangerous situation occurs, the water rescue boat can set off directly without preparation time, and the first-level rescue frame and the second-level rescue frame can overcome the complex underwater environment through their own movement to rescue the person who has lost the ability to move.

[0004] The present invention also provides a working method of a water rescue boat. Based on the water rescue boat, different rescue methods can be implemented for people who fall into the water in different states.

[0005] To achieve the above object, the present invention provides the following solutions: The present invention provides a water rescue boat, comprising a bow and a wing, wherein the wing is arranged below the bow and fixedly connected to the bow, there are two wings, the two wings are arranged opposite to each other, and a rescue platform is arranged between the two wings, the rescue platform comprises a primary rescue frame and a secondary rescue frame, the first end of the primary rescue frame is connected to the wing through a primary rotating device, and the first end of the secondary rescue frame is connected to the second end of the primary rescue frame through a secondary rotating device; a surface information collection device is arranged on the bow, and an underwater information collection device is arranged on the second end of the secondary rescue frame.

[0006] Preferably, the first-level rotating device includes a first-level rotating shaft and a first-level control device. Both ends of the first-level rotating shaft are rotatably connected to the first-level control device, and the first-level control device is fixed on the wing of the ship; the second-level rotating device includes a second-level rotating shaft and a second-level control device. Both ends of the second-level rotating shaft are rotatably connected to the second-level control device, and the second-level control device is fixed on the second end of the first-level rescue frame.

[0007] Preferably, the first-level control device is a first-level rotating motor, and the second-level control device is a second-level rotating motor.

[0008] Preferably, the first-level rescue frame further includes a telescopic frame. The side of the telescopic frame is slidably connected to the side of the first-level rescue frame. When extended, the moving direction of the telescopic frame is consistent with the direction from the first end to the second end of the first-level rescue frame. The first end of the second-level rescue frame is rotatably connected to the extended end of the telescopic frame.

[0009] Preferably, a tarpaulin retracting and deploying device is provided at the bottom of the bow of the ship. Upper tarpaulin guide rails and lower tarpaulin guide rails are provided on the wing of the ship. The retracted rescue platform is located between the upper tarpaulin guide rail and the lower tarpaulin guide rail. The first retracting and deploying end of the tarpaulin retracting and deploying device is docked with the upper tarpaulin guide rail, and the second retracting and deploying end of the tarpaulin retracting and deploying device is docked with the lower tarpaulin guide rail; the upper tarpaulin guide rails on the two wings of the ship are arranged oppositely, and the lower tarpaulin guide rails on the two wings of the ship are arranged oppositely.

[0010] Preferably, air outlets for providing hot air are provided on the wing of the ship, and the air outlets are located between the upper tarpaulin guide rail and the lower tarpaulin guide rail.

[0011] Preferably, the tarpaulin retracting and deploying device includes a retracting and deploying motor, an upper roller and a lower roller for storing the tarpaulin. The output end of the retracting and deploying motor is connected to the driven ends of the upper roller and the lower roller respectively through a transmission belt. The retracting and deploying motor drives the upper roller and the lower roller to rotate. The moving end of the tarpaulin wound on the upper roller is the first retracting and deploying end, and the moving end of the tarpaulin wound on the lower roller is the second retracting and deploying end.

[0012] Preferably, rescue handrails are provided on the outer side of the wing of the ship.

[0013] Preferably, a cutting device for breaking underwater entanglements is provided on the second-level rescue frame.

[0014] The present invention also provides a working method for a water rescue ship. Based on the above water rescue ship, it includes the following steps: N00. The water rescue ship reaches the position of the drowning person; N10. Judge the state of the drowning person and the depth of the drowning person in the water; N20. When the person in the water still has the ability to move, the first-level rescue frame and / or the second-level rescue frame of the rescue platform rotate downward into the water. After the person in the water climbs onto the rescue platform by himself / herself, the rescue platform retracts, lifting the person in the water out of the water, and then the water rescue boat returns. N30. When the person in the water has lost the ability to move, the first-level rescue frame and the second-level rescue frame of the rescue platform rotate downward into the water. The second-level rescue frame extends under the body of the person in the water. After the second-level rescue frame is in place, it actively shovels up the person in the water. Then, while keeping the person in the water stable, the rescue platform retracts, lifting the person in the water out of the water. Finally, the water rescue boat returns. N40. During the return process, the water rescue boat releases a tarpaulin to form a heat-insulating space that includes the rescue platform and the person in the water, and the air outlet releases hot air into the heat-insulating space.

[0015] The present invention has achieved the following technical effects compared with the prior art: The present invention provides a water rescue boat. The water surface information collection device and the underwater information collection device can collect the information on the water surface and underwater in real time. The water rescue boat can be driven without a driver on board. When rescuing a person in the water, the first-level rescue frame and the second-level rescue frame can adopt appropriate rescue methods according to the state of the person in the water. Shallow water rescue can be realized without rescue personnel following the boat. When a danger occurs, the water rescue boat can directly set off without preparation time. The first-level rescue frame and the second-level rescue frame can overcome the complex underwater environment through their own movement to rescue a person in the water who has lost the ability to move.

[0016] The present invention also provides a working method for the water rescue boat. Based on the above water rescue boat, different rescue methods can be implemented for persons in the water in different states.

[0017] The present invention has also achieved the following technical effects compared with the prior art: 1. In the present invention, a telescopic frame is provided on the first-level rescue frame. The telescopic frame can extend outward along the telescopic frame to expand the working area of the rescue platform, and can rescue a drowning person submerged in the water. 2. In the present invention, the tarpaulin retracting and deploying device can drive the tarpaulin to open, so that the tarpaulin covers the upper and lower parts of the rescue platform to form a relatively sealed heat-insulating space. The air outlet can release hot air into the heat-insulating space to ensure that the rescued person in the water will not lose body temperature. 3. A number of rescue handrails are provided on the outer side of the boat wing in the present invention. When there are many persons in the water and they have the ability to move, the persons in the water can hold the rescue handrails and then return to the shore with the water rescue boat, achieving the purpose of rescuing multiple persons at one time. 4. A cutting device for destroying underwater entanglements is provided in the present invention, which can free the person in the water from the bondage of waterweeds and other entanglements, facilitating the rescue. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of a water rescue boat with a retractable rescue platform in an embodiment of the present invention; Figure 2 Structural schematic diagram of a retractable rescue platform in an embodiment of the present invention; Figure 3 Structural schematic diagram of a rescue platform when the secondary rescue platform rotates downward into the water in an embodiment of the present invention; Figure 4 Structural schematic diagram of a rescue platform when the secondary rescue platform and the secondary rescue platform rotate downward into the water simultaneously in an embodiment of the present invention; Figure 5 Structural schematic diagram of a rescue platform when the telescopic frame extends in an embodiment of the present invention; Figure 6 Structural schematic diagram of a rescue platform when the tarpaulin is unfolded in an embodiment of the present invention; Figure 7 Structural schematic diagram of a rescue platform when the cutter extends in an embodiment of the present invention.

[0020] Among them, 1, bow; 2, wing; 3, primary rescue frame; 4, secondary rescue frame; 5, primary rotating shaft; 6, secondary rotating shaft; 7, primary rotating motor; 8, secondary rotating motor; 9, telescopic frame; 10, upper tarpaulin guide rail; 11, lower tarpaulin guide rail; 12, air outlet; 13, retracting and releasing motor; 14, upper winding roller; 15, lower winding roller; 16, rescue handrail; 17, surface camera; 18, infrared thermal imager; 19, underwater camera; 20, cutter; 21, cutter rotating motor; 22, cutter protection frame; 23, tarpaulin; 24, reset button. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] The present invention provides a water rescue boat to solve the problems existing in the above-mentioned prior art. The water surface information collection device and the underwater information collection device can collect the information on the water surface and underwater in real time, and the water rescue boat can be driven without a driver on board. When rescuing a person falling into the water, the first-level rescue frame and the second-level rescue frame can adopt appropriate rescue methods according to the state of the person falling into the water, and shallow water rescue can be realized without rescue personnel following the boat. When a dangerous situation occurs, the water rescue boat can directly set off without preparation time. The first-level rescue frame and the second-level rescue frame can overcome the complex underwater environment through their own movement to rescue the person falling into the water who has lost the ability to move.

[0023] The present invention also provides a working method of the water rescue boat. Based on the above-mentioned water rescue boat, different rescue methods can be implemented for persons falling into the water in different states.

[0024] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] As Figure 1 and Figure 2 shown, the present invention provides a water rescue boat, including a bow 1 and boat wings 2. The boat wings 2 are arranged below the bow 1 and fixedly connected to the bow 1. There are two boat wings 2, and the two boat wings 2 are arranged oppositely. A rescue platform is arranged between the two boat wings 2. The rescue platform includes a first-level rescue frame 3 and a second-level rescue frame 4. The first end of the first-level rescue frame 3 is connected to the boat wing 2 through a first-level rotating device, and the first end of the second-level rescue frame 4 is connected to the second end of the first-level rescue frame 3 through a second-level rotating device. The first-level rescue frame 3 and the second-level rescue frame 4 can rotate downward into the water to provide rescue for the person falling into the water. After the person falling into the water boards the rescue platform, the first-level rescue frame 3 and the second-level rescue frame 4 are retracted to lift the person falling into the water out of the water. For the person falling into the water who has lost the ability to move, the first-level rescue frame 3 and the second-level rescue frame 4 can adjust their postures through continuous movement, and finally shovel up the person falling into the water and take the person falling into the water out of the water. A water surface information collection device is arranged on the bow 1, and an underwater information collection device is arranged at the second end of the second-level rescue frame 4. As Figure 1 shown, the water surface information collection device includes a set of water surface cameras 17 and an infrared thermal imager 18 arranged in groups. At least two sets of water surface information collection devices are arranged on the bow 1 to collect the water surface information in front of and behind the boat respectively. Among them, the water surface camera 17 can directly obtain the image information of the water surface, and the infrared thermal imager 18 can timely detect the person falling into the water. Whether it is automatic driving or remote manual operation, the water rescue boat can quickly reach the location of the person falling into the water according to the collected information. The water surface information collection device can also include data collection devices such as a laser rangefinder and an ultrasonic detection device. The underwater information collection device is used to collect necessary underwater information during the rescue process to provide a basis for judging the situation of the person falling into the water. As Figure 2As shown in the figure, the underwater information collection device includes an underwater camera 19. Through the collected images of the underwater camera 19, it can be judged whether the drowning person is conscious, whether their activities are restricted by debris in the water or at the bottom, and whether their body is injured, etc. The underwater information collection device may also include data collection devices such as a thermometer, a laser rangefinder, and an ultrasonic detection device.

[0026] As Figures 2 to 4 shown in the figure, the first-level rotating device includes a first-level rotating shaft 5 and a first-level control device. Both ends of the first-level rotating shaft 5 are rotationally connected to the first-level control device, and the first-level control device is fixed on the boat wing 2. The second-level rotating device includes a second-level rotating shaft 6 and a second-level control device. Both ends of the second-level rotating shaft 6 are rotationally connected to the second-level control device, and the second-level control device is fixed on the second end of the first-level rescue frame 3. In a preferred embodiment, the first-level control device is a first-level rotating motor 7, and the second-level control device is a second-level rotating motor 8. During the rescue process, when the drowning person is on the water surface and has strong mobility, only the second-level rescue frame 4 can be put into the water. The drowning person can board the second-level rescue frame 4 by themselves, and then the second-level rescue frame 4 retracts to take the drowning person out of the water. This way only needs to drive the second-level rescue frame 4 to move, and the rescue time is short. When the drowning person has weak mobility, the second-level rescue frame 4 and the first-level rescue frame 3 can be put into the water at the same time to provide a larger attachment area for the drowning person. When the drowning person boards the second-level rescue frame 4 and the first-level rescue frame 3, they will be taken out of the water. When the drowning person has basically lost their mobility, the second-level rescue frame 4 and the first-level rescue frame 3 can be put into the water at the same time, and the postures of the second-level rescue frame 4 and the first-level rescue frame 3 are adjusted to a shovel shape, and then the drowning person is shoveled up. While ensuring that the drowning person is stably on the second-level rescue frame 4, the second-level rescue frame 4 and the first-level rescue frame 3 are continuously retracted until the drowning person is out of the water. As Figure 7 shown in the figure, a reset button 24 for issuing a reset command is provided on the second-level rescue frame 4, providing an autonomous control solution for the drowning person. When the drowning person boards the rescue platform and believes that the rescue platform can be retracted, they can manually operate the reset button 24 to retract the rescue platform. The reset button 24 can also be installed in other convenient operating positions.

[0027] As Figure 5 shown in the figure, the first-level rescue frame 3 further includes a telescopic frame 9. The side of the telescopic frame 9 is slidably connected to the side of the first-level rescue frame 3. When extending, the moving direction of the telescopic frame 9 is consistent with the direction from the first end to the second end of the first-level rescue frame 3. The first end of the second-level rescue frame 4 is rotationally connected to the extended end of the telescopic frame 9. After the telescopic frame 9 extends, it can expand the movement range of the rescue platform in the water, facilitating the rescue of the drowning person submerged in water. In a preferred embodiment, the side of the first-level rescue frame 3 is a sleeve, and the side of the telescopic frame 9 is arranged inside the sleeve and can slide along the sleeve.

[0028] As Figure 4 andFigure 6 As shown in the figure, a tarpaulin retracting device is arranged at the bottom of the bow 1. An upper tarpaulin guide rail 10 and a lower tarpaulin guide rail 11 are arranged on the wing 2. The retracted rescue platform is located between the upper tarpaulin guide rail 10 and the lower tarpaulin guide rail 11. The first retracting end of the tarpaulin retracting device is docked with the upper tarpaulin guide rail 10, and the second retracting end of the tarpaulin retracting device is docked with the lower tarpaulin guide rail 11. The upper tarpaulin guide rails 10 on the two wings 2 are arranged oppositely, and the lower tarpaulin guide rails 11 on the two wings 2 are arranged oppositely. When the rescue platform bears the drowning person, the tarpaulin 23 can block the upper and lower sides of the rescue platform. The tarpaulin 23 and the wing 2 cooperate to enclose a relatively sealed space around the rescue platform, playing a heat preservation role. In a preferred embodiment, air outlets 12 for providing hot air are arranged on the wing 2. The air outlets 12 are located between the upper tarpaulin guide rail 10 and the lower tarpaulin guide rail 11. The hot air provided by the air outlets 12 has a heating function, can improve the heat preservation effect, and provide emergency rescue for the drowning person whose body temperature has dropped.

[0029] As Figure 4 shown in the figure, the tarpaulin retracting device includes a retracting motor 13, an upper winding roller 14 and a lower winding roller 15 for storing the tarpaulin 23. The output end of the retracting motor 13 is respectively connected to the driven ends of the upper winding roller 14 and the lower winding roller 15 through transmission belts. The retracting motor 13 drives the upper winding roller 14 and the lower winding roller 15 to rotate. The moving end of the tarpaulin 23 wound around the upper winding roller 14 is the first retracting end, and the moving end of the tarpaulin 23 wound around the lower winding roller 15 is the second retracting end. In a preferred embodiment, a partition board is arranged below the bow 1. The partition board is located in front of the upper winding roller 14 and the lower winding roller 15. The function of the partition board is to block the gap between the upper winding roller 14 and the lower winding roller 15, separate the space formed by enclosing the tarpaulin 23 and the wing 2 from the external space at the position of the bow 1, and improve the heat preservation effect.

[0030] As Figure 1 shown in the figure, a rescue handrail 16 is arranged on the outer side of the wing 2. When there are a large number of drowning people with the ability to move, the drowning people can hold the rescue handrail 16 with their hands and then return to the shore with the water rescue boat, realizing the rescue of multiple drowning people at one time. In a preferred embodiment, life jackets or lifebuoys can be loaded on the rescue handrail 16 to facilitate the activities of the drowning people in the water.

[0031] As Figure 7As shown in the figure, a cutting device for destroying underwater entanglements is provided on the secondary rescue frame 4. Underwater entanglements include sundries such as waterweeds and fishing nets that can bind the drowning person. In a preferred example, the cutting device includes a cutter 20, a cutter rotating motor 21, and a cutter protection frame 22. One end of the cutter 20 is connected to the output end of the cutter rotating motor 21, and the cutter protection frame 22 is arranged outside the cutter 20 and the cutter rotating motor 21. When it is necessary to destroy the underwater entanglement, the cutter rotating motor 21 is started to drive the cutter 20 to extend out of the cutter protection frame 22 to a suitable working position, and the overall movement of the rescue platform then drives the cutter 20 to cut. After the cutting is completed, the cutter 20 retracts.

[0032] A control device and an information processing device for receiving and transmitting instructions are arranged in the bow 1. A microphone and a speaker for communicating with the drowning person are arranged on the bow 1 and the wing 2. A camera for observing the drowning person can also be arranged at the bottom of the bow 1 and the inner side of the wing 2.

[0033] As Figure 1 As shown in the figure, the power device of the water rescue boat is arranged on the wing 2. In a preferred embodiment, the power device includes an electric motor and a propeller driven by the electric motor.

[0034] The present invention also provides a working method for a water rescue boat. Based on the above water rescue boat, it includes the following steps: N00: The water rescue boat reaches the position of the drowning person; N10: Judge the state of the drowning person and the depth of the drowning person in the water; N20: When the drowning person still has the ability to move, the primary rescue frame 3 and / or the secondary rescue frame 4 of the rescue platform rotate downward into the water. After the drowning person gets on the rescue platform by himself, the rescue platform retracts to lift the drowning person out of the water, and then the water rescue boat returns; N30: When the drowning person loses the ability to move, the primary rescue frame 3 and the secondary rescue frame 4 of the rescue platform rotate downward into the water. The secondary rescue frame 4 extends under the body of the drowning person. After the secondary rescue frame 4 is in place, it actively shovels up the drowning person, and then the rescue platform retracts while keeping the drowning person stable to lift the drowning person out of the water. Finally, the water rescue boat returns; N40: During the return process, the water rescue boat releases a tarpaulin 23 to form a heat preservation space containing the rescue platform and the drowning person, and the air outlet 12 releases hot air into the heat preservation space.

[0035] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A water rescue boat, characterized in that: It includes a bow (1) and boat wings (2). The boat wings (2) are arranged below the bow (1) and fixedly connected to the bow (1). There are two boat wings (2), and the two boat wings (2) are arranged oppositely. A rescue platform is arranged between the two boat wings (2). The rescue platform includes a primary rescue rack (3) and a secondary rescue rack (4). The first end of the primary rescue rack (3) is connected to the boat wing (2) through a primary rotating device, and the first end of the secondary rescue rack (4) is connected to the second end of the primary rescue rack (3) through a secondary rotating device; A water surface information collection device is arranged on the bow (1), and an underwater information collection device is arranged at the second end of the secondary rescue rack (4).

2. The water rescue boat according to claim 1, characterized in that: The primary rotating device includes a primary rotating shaft (5) and a primary control device. Both ends of the primary rotating shaft (5) are rotatably connected to the primary control device, and the primary control device is fixed on the boat wing (2); The secondary rotating device includes a secondary rotating shaft (6) and a secondary control device. Both ends of the secondary rotating shaft (6) are rotatably connected to the secondary control device, and the secondary control device is fixed at the second end of the primary rescue rack (3).

3. The water rescue boat according to claim 2, wherein: The primary control device is a primary rotating motor (7), and the secondary control device is a secondary rotating motor (8).

4. The water rescue boat according to claim 1, characterized in that: The primary rescue rack (3) further includes a telescopic rack (9). The side of the telescopic rack (9) is slidably connected to the side of the primary rescue rack (3). When extended, the moving direction of the telescopic rack (9) is the same as the direction from the first end to the second end of the primary rescue rack (3). The first end of the secondary rescue rack (4) is rotatably connected to the extended end of the telescopic rack (9).

5. The water rescue boat according to claim 1, characterized in that: A tarpaulin retracting device is arranged at the bottom of the bow (1). An upper tarpaulin guide rail (10) and a lower tarpaulin guide rail (11) are arranged on the boat wing (2). The retracted rescue platform is located between the upper tarpaulin guide rail (10) and the lower tarpaulin guide rail (11). The first retracting end of the tarpaulin retracting device is docked with the upper tarpaulin guide rail (10), and the second retracting end of the tarpaulin retracting device is docked with the lower tarpaulin guide rail (11); The upper tarpaulin guide rails (10) on the two boat wings (2) are arranged oppositely, and the lower tarpaulin guide rails (11) on the two boat wings (2) are arranged oppositely.

6. The water rescue boat according to claim 5, characterized in that: Air outlet holes (12) for providing hot air are arranged on the boat wing (2), and the air outlet holes (12) are located between the upper tarpaulin guide rail (10) and the lower tarpaulin guide rail (11).

7. The water rescue boat according to claim 5, wherein: The tarpaulin retracting and deploying device includes a retracting and deploying motor (13), an upper winding roller (14) and a lower winding roller (15) for storing the tarpaulin (23). The output end of the retracting and deploying motor (13) is connected to the driven end of the upper winding roller (14) and the driven end of the lower winding roller (15) respectively through a transmission belt. The retracting and deploying motor (13) drives the upper winding roller (14) and the lower winding roller (15) to rotate. The moving end of the tarpaulin (23) wound around the upper winding roller (14) is the first retracting and deploying end, and the moving end of the tarpaulin (23) wound around the lower winding roller (15) is the second retracting and deploying end.

8. The water rescue boat according to claim 1, characterized in that: A rescue handrail (16) is arranged on the outer side of the ship wing (2).

9. The water rescue boat according to claim 1, characterized in that: A cutting device for destroying underwater entanglements is arranged on the secondary rescue rack (4).

10. A working method of a water rescue boat, based on the water rescue boat described in any one of claims 1 to 9, characterized in that, It includes the following steps: N00: The water rescue ship arrives at the position of the drowning person. N10: Judge the state of the drowning person and the depth of the drowning person in the water. N20: When the drowning person still has the ability to move, the primary rescue rack (3) and / or the secondary rescue rack (4) of the rescue platform rotate downward into the water. After the drowning person gets on the rescue platform by himself, the rescue platform retracts, making the drowning person leave the water, and then the water rescue ship returns. N30: When the drowning person loses the ability to move, the primary rescue rack (3) and the secondary rescue rack (4) of the rescue platform rotate downward into the water. The secondary rescue rack (4) extends under the body of the drowning person. After the secondary rescue rack (4) is in place, it actively shovels up the drowning person. Then, while keeping the drowning person stable, the rescue platform retracts, making the drowning person leave the water. Finally, the water rescue ship returns. N40: During the return process, the water rescue ship releases the tarpaulin (23) to form a heat preservation space containing the rescue platform and the drowning person, and the air outlet (12) releases hot air into the heat preservation space.

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