CN114590372B - Overwater rescue device and rescue method - Google Patents

Abstract

The invention discloses a water rescue device and a rescue method, which comprises floating bodies, wherein a sliding track is arranged on one side, close to the two floating bodies, of each floating body, a first base plate and a second base plate are respectively arranged on the two floating bodies, a winding machine is arranged on the second base plate, the first base plate is hinged and connected with the second base plate which is correspondingly arranged, a remotely-controlled propeller assembly is arranged at the bottom of each floating body, a blocking and protecting assembly is arranged between the floating bodies, two ends of the hinged assembly are positioned in the sliding tracks, supporting plates are respectively connected between the first base plates and the second base plates, each supporting plate comprises a waved blade plate which can swing, the device adjusts the distance between the floating bodies through the first base plates and the second base plates, controls the propeller assemblies to move the floating bodies, pulls the blocking and protecting assemblies through the winding machine to rescue personnel, and keeps the device stable in wind energy under the action of the supporting plates and the waved blade plates.

Description

Overwater rescue device and rescue method

Technical Field

The invention belongs to the technical field of water life-saving equipment, and particularly relates to a water rescue device and method.

Background

At present, rescue devices adopted by people falling into water at home and abroad mainly comprise life jackets, life rings, life ropes, inflatable rubber rafts, life stretchers and the like. The life jacket is generally arranged on water operating personnel, but the life jacket is inconvenient to carry in water to move, so that the rescue efficiency is influenced; when the life buoy or the inflatable rubber raft is used for rescue, the person in distress needs to actively hold the life buoy or the inflatable rubber raft, and if the person in distress loses consciousness or is incapable of holding the life buoy or the inflatable rubber raft, life saving cannot be realized through the life buoy or the inflatable rubber raft; the life-saving rope is used for rescuing, and long-distance life saving cannot be carried out due to distance limitation; when the rescue vessel is too far away from the rescue vessel or the environment is severe, the rescue vessel is inconvenient for the rescue personnel to carry out rescue work in person, and the rescue stretcher is inconvenient to use. In addition, the rescue devices can be smoothly implemented under the guidance of professional life-saving personnel, so that the life-saving equipment cannot be accurately transported without the guidance of professional life-saving personnel, and meanwhile, victims cannot automatically implement life saving and automatically return to a safe area through the life-saving equipment.

Disclosure of Invention

The invention aims to provide a water rescue device and a water rescue method, which are convenient to remotely control and can save and protect people falling into water.

The technical scheme adopted by the invention for realizing the purpose is as follows:

a water rescue device comprising: the body, the body symmetry sets up, and the symmetry sets up first base plate and second base plate respectively on two bodies, and first base plate corresponds the setting with the second base plate and is connected with articulated, all is equipped with ring body, its characterized in that on first base plate and the second base plate: close one side of body is equipped with the groove of sliding, body bottom surface afterbody is equipped with the screw subassembly, it protects the subassembly to be equipped with the fender that can swing between the body, it protects the casing including keeping off to keep off the casing afterbody connection, it is equipped with the bottom bolster to keep off casing bottom, it has the hinge assembly to keep off the internal interlude of casing, the hinge assembly both ends are located the groove of sliding, all be equipped with the backup pad between the first base plate on arbitrary body and between the second base plate, wherein, be equipped with the coiling mechanism on the second base plate side, the coiling mechanism is including the receipts rope that passes the ring body. Two bodies provide surface of water buoyancy for the device, and realize the removal of body on water through screw subassembly, first base plate second base plate swing relatively is in order to increase the interval between two bodies, cooperation screw subassembly makes the person that falls into water get into to keep off and protects the subassembly, coiling mechanism plays the fender through the coiling rope and protects the subassembly and ensures that the person that falls into water in time leaves the surface of water, the bottom bolster protects the subassembly bottom to keeping off and provides the protection, it is injured to avoid lying to keep off the person of being rescued in protecting the subassembly, and the interval between two bodies can be regulated and control to the bottom bolster, avoid the extrusion personnel of falling into water of body interval undersize.

Preferably, the winding device comprises a winding shell, winding fixed pulleys are symmetrically arranged in the winding shell, two winding motors are arranged between the two winding fixed pulleys, rotating shafts of the winding motors are inserted into the adjacent winding fixed pulleys, the two winding motors and the connected winding fixed pulleys rotate synchronously, a pulley groove is formed in any one winding fixed pulley, a winding rope body is arranged in the pulley groove, one end of the winding rope body is fixed in the pulley groove, and the other end of the winding rope body penetrates through the ring body and is fixed on the upper end face of the net piece. Two coiling motors of the same specification drive two coiling fixed pulleys to synchronously rotate, guarantee that the coiling ropes on the two coiling fixed pulleys pull the net piece with the same force, avoid the uneven stress and the slope when the net piece is pulled up, the ring body limits the sliding range of the coiling ropes, avoid the coiling ropes from generating interference when the coiling ropes are stretched, and the pulley grooves are used for placing and coiling the coiling ropes.

Preferably, the propeller component comprises a driving motor, the driving motor is fixed at the tail part of the bottom surface of the floating body, and a rotating shaft of the driving motor is provided with spiral fan blades in a surrounding mode. The driving motor can rotate forwards and backwards through remote control, the driving motor drives the spiral fan blades to rotate forwards and backwards through the rotating shaft, the floating body is driven to move forwards and backwards on the water surface, and the device can rotate by controlling the rotation of the single driving motor.

Preferably, keep off the protection casing and be close to net piece one end and be equipped with the casing entry, keep off the internal bottom surface of protection casing and be equipped with interior gas plate that fills up, interior gas plate that fills up is two gas plates of connecting from top to bottom, and the hole of permeating water has been laid to the mistake on two interior gas plates, is equipped with the connecting strip between two interior gas plates of filling up. The connecting strip makes upper and lower interior air cushion board have the interval, water on the person of falling into water can be through on the interior air cushion board of the hole of permeating water downflow below of air cushion board in the top, and discharge through the hole of permeating water on the air cushion board in the below, the connecting strip makes upper and lower interior air cushion board have the interval, the bottom water is difficult to the upflow to the top that has a take the altitude in air cushion board, and the water of upflow can be blockked by connecting strip and the interior air cushion board plate body in the top, reduce bottom water contact person's health of falling into water, the high clearance that the connecting strip brought also is convenient for the top water to discharge downwards, avoid person's health of falling into water too moist, a large amount of air current blows and takes away person's body surface temperature when leading to the device removal, cause by the excessive temperature loss of rescuer that falls into water and be coma.

Preferably, the bottom buffer piece comprises a buffer base body, a buffer plate body is fixed in a notch of the buffer base body, partition plates are arranged at intervals in the hollow position in the buffer plate body, air holes are formed in any partition plate in an array mode, and the air holes are through holes. The buffering base member is the inflatable plate body with the buffering plate body, and the level of this side of hoisting device guarantees the whole slope of device, is convenient for keep off and protects the subassembly and salvage the person that falls into water, and both sides body provides support control extrusion scope on the one hand when being close to extrusion buffering base member, and the device removes at the surface of water and produces vibrations transmission to the buffering plate body to through the gas pocket buffering extrusion and the vibrations of extrusion plate body, stability when keeping the device transportation by the rescuer.

Preferably, the hinge assembly comprises a sliding sleeve, the sliding sleeve is inserted into one end, far away from the mesh, of the protective shell, sliding rods are arranged at two ends of the sliding sleeve in a sliding mode respectively, a connecting spring is arranged between the two adjacent end faces of the sliding rods, a limiting head is fixed to the other end face of the two sliding rods, and the limiting head is slidably mounted in a sliding groove. The slide bar of both sides slides in the sleeve that slides when two body interval change to synchronous dynamic limit head reciprocates at the inslot that slides, makes the body can guarantee the normal swing of keeping off the protective housing body simultaneously at interval change, and the distance between two slide bars of connecting spring restraint avoids two slide bars to contradict each other and the fracture.

Preferably, the side of the supporting plate is symmetrically provided with hinged seats, a hinged shaft is fixedly connected between the hinged seats, a swing frame is hinged on the hinged shaft, a wavy blade plate is fixed between the swing frames, an elastic plate is fixed on the same side of the swing frame on the supporting plate, and a spring is arranged between the elastic plate and the adjacent swing frame. The first base plate and the second base plate that both sides were guaranteed to the backup pad are launched and are packed up in step, the relative backup pad swing of wave acanthus leaf ability, and elastic plate and spring restriction wave acanthus leaf are all the time in the direction swing of slant, be favorable to the wave acanthus leaf to guide the surface of water air current to pass through, reduce the stability interference of air current to the device, both sides wave acanthus leaf forms in person's top both sides of being rescued and shelters from, avoid the air current effect person of being rescued to reduce person's body temperature on the one hand, on the other hand avoids outside striking to the injury of person of being rescued, and can produce the wind pressure of slope to center department when both sides wind acts on the wave acanthus leaf, can hoisting device's stability.

The invention adopts the adjustable and movable floating body to match with the rolling device to lift the baffle and protection component to rescue people falling into water, thereby having the following beneficial effects: the floating body can move on the water surface through the propeller assembly to improve the rescue efficiency; the winding device can pull the net sheet to enable people falling into water to be rescued and enter the shielding shell, and the protection effect is achieved; the buffer base body prevents the floating body from extruding the rescued person, and can absorb the vibration of the device during movement to ensure the stability of the device; the support plate provides protection to the rescuer and improves device stability. Therefore, the invention provides the water rescue device and the method which are convenient for remote control and can rescue and protect people falling into water.

Drawings

FIG. 1 is a schematic view of a float;

FIG. 2 is a schematic view of a propeller assembly;

FIG. 3 is a schematic view of a shield assembly;

FIG. 4 is a schematic view of an inner air bearing plate;

FIG. 5 is a schematic view of a bottom bumper;

FIG. 6 is a schematic view of a separator plate;

FIG. 7 is a schematic view of a hinge assembly;

FIG. 8 is a schematic view of a winding device;

fig. 9 is a schematic view of a support plate.

Reference numerals: 1. a float; 20. a sliding groove; 3. a first substrate; 4. a second substrate; 5. a ring body; 6. a winding device; 60. winding the shell; 61. winding a fixed pulley; 62. a winding motor; 63. a pulley groove; 64. winding the rope; 7. a propeller assembly; 70. a drive motor; 71. a helical fan blade; 8. a shield assembly; 80. a guard housing; 81. a mesh sheet; 82. a bottom cushion; 83. a hinge assembly; 800. a housing inlet; 801. an inner air cushion plate; 802. water permeable holes; 803. a connecting strip; 820. a buffer substrate; 821. a buffer plate body; 822. a partition plate; 823. air holes; 830. a slipping sleeve; 831. a slide bar; 832. a connecting spring; 833. a limiting head; 9. a support plate; 90. a hinged seat; 91. hinging shafts; 92. a swing frame; 93. a wave blade plate; 94. an elastic plate; 95. a spring.

Detailed Description

The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:

it is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a water rescue device comprises floating bodies 1, the floating bodies 1 are symmetrically and parallelly arranged, a first substrate 3 and a second substrate 4 are respectively arranged on a left floating body 1 and a right floating body 1 in pairs, the first substrate 3 is hinged with the second substrate 4, propeller assemblies 7 are respectively arranged at the ground tails of the floating bodies 1, the propeller assemblies 7 comprise driving motors 70, the driving motors 70 are fixed at the tails of the floating bodies 1, spiral blades 71 are arranged around the rotating shaft of the driving motors 70, a winding device 6 is arranged above the second substrate 4 at the head of the floating body 1, the winding device 6 comprises a winding shell 60, the winding shell 60 is a square shell with an opening at one side and is symmetrically provided with winding fixed pulleys 61 inside, winding motors 62 are symmetrically arranged between the two winding fixed pulleys 61, the rotating shaft of the winding motor 62 is inserted into the winding fixed pulley 61 adjacent to the rotating shaft, and the winding motor 62 can drive the winding fixed pulley 61 connected with the winding motor to synchronously rotate through remote control, A pulley groove 63 is formed in the circular curved surface of the rolling fixed pulley 61, a rolling rope 64 is arranged on the pulley groove 63, a ring body 5 is arranged on a first base plate 3 and a second base plate 4 which are far away from a rolling device 6, a blocking and protecting component 8 is arranged between floating bodies 1, the blocking and protecting component 8 comprises a blocking and protecting shell 80, a mesh 81 is horizontally connected to one end of the blocking and protecting shell 80, one end of the rolling rope 64 is fixed in the pulley groove 63, the other end of the rolling rope passes through the ring body 5 and is connected to the mesh 81, a shell inlet 800 is formed in the curved surface of the blocking and protecting shell 80 which is close to the mesh 81, two rolling fixed pulleys 61 are driven by two rolling motors 62 with the same specification to synchronously rotate, the rolling ropes 64 on the two rolling fixed pulleys 61 are ensured to pull the mesh 81 at the same speed, the rolling ropes 64 on two sides are ensured to be at the same tightening degree when the mesh 81 is pulled, and the rolling rope 64 on one side is prevented from being excessively tightened and broken, the ring body 5 limits the sliding range of the winding rope 64, so that the winding device is prevented from interfering when the winding rope 64 is stretched, and the pulley groove 63 is used for placing and winding the winding rope 64. The floating body 1 provides overall buoyancy for the device, the spiral fan blades 71 are driven to rotate through the remote control driving motor 70, the floating body 1 is driven to move to the position near a person falling into water, the blocking and protecting assembly 8 is located at the foot of the person to be saved, at the moment, the first base plate 3 swings relative to the second base plate 4 and increases the included angle, the distance between the two floating bodies 1 is driven to be increased, the person falling into water is prevented from being extruded due to the fact that the distance between the floating bodies 1 is too small, the driving motor 70 is controlled to rotate reversely to enable the floating body 1 to move back towards the direction of the person to be saved until the body of the person falling into water enters the blocking and protecting shell 80 from the shell inlet 800, at the moment, the rolling fixed pulley 61 is driven to rotate through the rolling motor 62, the rolling rope 64 is driven by the rolling motor 61 to pull up the net piece 81, the person falling into water safely leaves the water surface, and the situation that the face of the person falling into water causes suffocates is avoided.

The inner air cushion plates 801 are arranged upwards in the retaining and protecting shell 80, the inner air cushion plates 801 are distributed up and down, a plurality of water permeable holes 802 are formed in any one of the inner air cushion plates 801, the water permeable holes 802 in the upper inner air cushion plate 801 and the lower inner air cushion plate 801 are arranged in a staggered mode, connecting strips 803 which are spirally wound are arranged between the two inner air cushion plates 801, water on a person falling into water can flow downwards to the lower inner air cushion plate 801 through the water permeable holes 802 in the upper inner air cushion plate 801 and the lower inner air cushion plate and can be discharged through the water permeable holes 802 in the lower inner air cushion plate 801, the upper inner air cushion plate 801 and the lower inner air cushion plate are separated by the connecting strips 803, the bottom water body is difficult to flow upwards to the upper inner air cushion plate 801 with a certain height, the water body flowing upwards can be blocked by the connecting strips 803 and the upper inner air cushion plate 801, the body contact with the body of the person falling into water is reduced, the height gap brought by the connecting strips 803 is convenient for the upper water body to discharge downwards, and the body is prevented from being too humid, a large amount of the air flow when the device is moved, and the body surface temperature of the person falling into water is taken away excessively.

A bottom buffer 82 is arranged below the blocking and protecting component 8, two ends of the bottom buffer 82 are respectively fixed on the bottom surfaces of the two floating bodies 1, the bottom buffer 82 comprises a buffer base 820, the buffer base 820 is an inflatable plate body with a notch, a buffer plate body 821 is arranged in the notch of the buffer base 820, the buffer plate body 821 is a sleeve body with two open ends, partition plates 822 are arranged between the upper surface and the lower surface of the buffer plate body 821 at equal intervals, air holes 823 are arranged on any partition plate 822 in an array mode, the buffer base 820 and the buffer plate body 821 are inflatable plate bodies, the horizontal height on the side of the lifting device is ensured to be integrally inclined, a person falling into water can conveniently enter the blocking and protecting shell 80 from the shell inlet 80, when both sides body 1 is being close to extrusion buffering base member 820, buffering plate 821 provides support control extrusion scope, the device removes at the surface of water and produces vibrations and transmit to buffering plate 821, and cushion vibrations through gas pocket 823 on extrusion baffle 822, stability when the device transportation person that falls into water, the device is when moving on the surface of water, buffering plate 821 and buffering base member 820 protect fender casing 80 bottom, avoid keeping off the bottom of fender casing 80 and strike the barrier in the water and cause including the rescued person injured, and the baffle can provide the support of buffering plate 821 in vertical direction, avoid buffering plate 821 compressive deformation to lose the protective effect. The hinge assembly 83 is inserted into one end of the protective case 80 far from the mesh 81, the hinge assembly 83 includes a sliding sleeve 830, the sliding sleeve 830 is a cylindrical cylinder with holes at two ends, sliding rods 831 are respectively arranged at two ends of the sliding sleeve 830, the sliding rods 831 can move in the sliding sleeve 830, a connecting spring 832 is arranged between the two sliding rods 831, two ends of the connecting spring 832 are respectively fixed on adjacent end surfaces of the two sliding rods 831, a limiting head 833 is arranged at the end far from the sliding sleeve 831 of the two sliding rods 831, a sliding groove 20 is arranged at one inward side of the two floating bodies 1, the limiting head 833 on any sliding rod 831 is positioned in the sliding groove 20 and can slide up and down, when the first substrate 3 is hinged and swung on the second substrate 4 to drive the distance change of the floating bodies 1, the sliding rods 831 at two ends of the sliding sleeve 830 extend outwards, and simultaneously the limiting head 833 on any sliding rod 831 moves up and down in the sliding groove 20 at the side, so that the floating body 1 can ensure that the sliding sleeve 830 and the sliding rods 831 at two sides always keep the same axial direction when the distance change, so that the protective case 80 can be normally broken by the protective case and pulled by the protective case 64 and pulled and connected to the sliding rods 832, the sliding spring can not be pulled by the sliding rods 830, and the sliding spring can be connected to prevent the sliding rods from sliding rod connecting spring from sliding sleeve 830.

The supporting plates 9 are fixedly connected between the first base plates 3 and between the second base plates 4, hinge seats 90 are symmetrically arranged on the side surfaces of the supporting plates 9, hinge shafts 91 are connected between the hinge seats 90, swing frames 92 are symmetrically arranged on the hinge shafts 91, the swing frames 92 are hinged with the hinge shafts 91 and can swing synchronously, a wave blade plate 93 is arranged between the swing frames 92 at two ends, the wave blade plate 93 is a folded thin plate, elastic plates 94 are symmetrically arranged on the supporting plate 9, any elastic plate 94 is arranged corresponding to the swing frame 92, a spring 95 is arranged between the elastic plate 94 and the swing frame 92 which is correspondingly arranged, the supporting plate 9 ensures that the first base plate 3 and the second base plate 4 on two sides are synchronously unfolded and folded, the stability of the first base plate 3 and the second base plate 4 during hinged swing is improved, the swing frame 92 can drive the wave blade plate 93 to swing relative to the supporting plate 9, when the wave blade plate 93 is acted by air current, the elastic plate 94 and the spring 95 limit the wave blade plate 93 to always incline upwards and swing within a certain angle range, the wave blade plate 93 inclining upwards is beneficial to guiding the air current on the water surface to pass through, the interference of the air current on the stability of the device is reduced, thereby ensuring the stability of the device when transporting the person falling into the water, the wave-shaped leaf plates 93 at the two sides form shielding at the two sides above the person to be rescued, on one hand, the person to be rescued is prevented from reducing the body temperature of the person to be rescued under the action of air flow, on the other hand, the person to be rescued is prevented from causing secondary damage due to external impact, and when external air acts on the wave blade plate 93, air flow flows along the inclined plate surface of the wave blade plate 93 to generate wind pressure which is perpendicular to the inclined downward wind pressure of the wave blade plate 93, the wind pressure with the inclined downward sides enables the whole device to sink on the water surface, the stability of the device in water surface movement and rescue can be improved, and the device is prevented from being overturned due to too shallow wading when the propeller assembly moves on the water surface.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. A water rescue device comprising:

the floating bodies (1) are two in number, one end parts of the two floating bodies (1) are connected through a second base plate (4), the other end parts of the two floating bodies (1) are connected through a first base plate (3), the first base plate (3) and the second base plate (4) are correspondingly arranged and are hinged, ring bodies (5) are arranged on the first base plate (3) and the second base plate (4),

the method is characterized in that: a sliding groove (20) is formed in one side close to the floating body (1), a propeller component (7) is arranged at the tail of the bottom surface of the floating body (1), a blocking and protecting component (8) capable of swinging is arranged between the floating bodies (1), the blocking and protecting component (8) comprises a blocking and protecting shell (80), a net piece (81) is connected to the tail of the blocking and protecting shell (80), a bottom buffer piece (82) is arranged at the bottom of the blocking and protecting shell (80), a hinge component (83) is inserted into the blocking and protecting shell (80), two ends of the hinge component (83) are located in the sliding groove (20), a support plate (9) is arranged between the first substrate (3) and the second substrate (4) on any floating body (1),

a winding device (6) is arranged on the side surface of the second base plate (4), and the winding device (6) comprises a winding rope (64) penetrating through the ring body (5);

coiling mechanism (6) are including rolling casing (60), the symmetry is provided with rolling fixed pulley (61), two in rolling casing (60) be equipped with two rolling motor (62) between rolling fixed pulley (61), the pivot of rolling motor (62) alternates adjacent rolling fixed pulley (61), two rolling motor (62) and connection rolling fixed pulley (61) synchronous revolution, arbitrary be equipped with pulley groove (63) on rolling fixed pulley (61), rolling rope (64) one end is fixed in pulley groove (63), the other end pass with ring body (5) and be fixed in net piece (81) up end.

2. A water rescue device as claimed in claim 1, further comprising: the propeller component (7) comprises a driving motor (70), the driving motor (70) is fixed at the tail part of the bottom surface of the floating body (1), and spiral fan blades (71) are arranged on a rotating shaft of the driving motor (70) in a surrounding mode.

3. A water rescue device as claimed in claim 1, wherein: keep off and protect casing (80) and be close to net piece (81) one end is equipped with casing entry (800), keep off and protect casing (80) inner bottom surface and be equipped with interior gas board (801), interior gas board (801) are two gas boards of connecting from top to bottom, two crisscross hole (802) of permeating water of having laid on interior gas board (801), two be equipped with connecting strip (803) between interior gas board (801).

4. A water rescue device as claimed in claim 1, further comprising: the bottom buffering member (82) comprises a buffering base body (820), a buffering plate body (821) is fixed in a notch of the buffering base body (820), partition plates (822) are arranged at intervals in hollow positions in the buffering plate body (821), air holes (823) are formed in the partition plates (822) in an array mode, and the air holes (823) are through holes.

5. A water rescue device as claimed in claim 1, wherein: articulated subassembly (83) are including sliding sleeve (830), sliding sleeve (830) alternate keep off casing (80) and keep away from net piece (81) one end, sliding sleeve (830) both ends are equipped with slide bar (831) respectively slidable, two be equipped with between the close terminal surface of slide bar (831) connecting spring (832), two slide bar (831) another terminal surface is fixed with spacing head (833), install spacing head (833) slidable in sliding groove (20).

6. A water rescue device as claimed in claim 1, further comprising: the utility model discloses a flexible solar cell module, including backup pad (9), backup pad (9) side symmetry is equipped with articulated seat (90), fixedly connected with articulated shaft (91) between articulated seat (90), articulated on articulated shaft (91) is connected with swing span (92), be fixed with wave leaf plate (93) between swing span (92), lie in backup pad (9) swing span (92) homonymy is fixed with elastic plate (94), elastic plate (94) and adjacent be equipped with spring (95) between swing span (92).

7. The use method of the water rescue device as claimed in any one of claims 1 to 3, characterized by the following steps:

the first base plate (3) swings relative to the second base plate (4) to increase the distance between the floating bodies (1), the propeller assembly (7) drives the floating bodies (1) to back up so that people falling into water enter the retaining and protecting shell (80), and the rolling device (6) pulls up the retaining and protecting assembly (8) through the rolling rope body (64) so that the device and the people falling into water leave the water surface, so that rescue is completed.

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