CN110395370A - A kind of efficient waters rescue floating item based on Radio Transmission Technology - Google Patents

A kind of efficient waters rescue floating item based on Radio Transmission Technology Download PDF

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Publication number
CN110395370A
CN110395370A CN201910735750.6A CN201910735750A CN110395370A CN 110395370 A CN110395370 A CN 110395370A CN 201910735750 A CN201910735750 A CN 201910735750A CN 110395370 A CN110395370 A CN 110395370A
Authority
CN
China
Prior art keywords
floating
ontology
motor
radio transmission
transmission technology
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910735750.6A
Other languages
Chinese (zh)
Inventor
陈寅寅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Meikawa Security Technology Co Ltd
Original Assignee
Jiangsu Meikawa Security Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Meikawa Security Technology Co Ltd filed Critical Jiangsu Meikawa Security Technology Co Ltd
Priority to CN201910735750.6A priority Critical patent/CN110395370A/en
Publication of CN110395370A publication Critical patent/CN110395370A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63CLAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00Life-saving in water
    • B63C9/08Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63CLAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00Life-saving in water
    • B63C9/08Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
    • B63C9/20Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like characterised by signalling means, e.g. lights
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63CLAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00Life-saving in water
    • B63C9/22Devices for holding or launching life-buoys, inflatable life-rafts, or other floatable life-saving equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H21/00Use of propulsion power plant or units on vessels
    • B63H21/12Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/17Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H25/00Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B2035/006Unmanned surface vessels, e.g. remotely controlled
    • B63B2035/008Unmanned surface vessels, e.g. remotely controlled remotely controlled

Abstract

The invention belongs to waters rescue technique fields, in particular a kind of efficient waters rescue floating item based on Radio Transmission Technology, comprising floating an ontology, remote controler, one end of the floating ontology is connected with power part, the other end tail portion of the floating ontology is connected with tow strap, the side of the floating ontology is installed on handle, the outer surface of the floating ontology is installed on LED light, the shape LED light for being combined into arrow is inlaid with by top and bottom, convenient for seeing the direction of the invention moved, the position of LED light is observed convenient for rescuer and the rescued, and carry out using, it is convenient for catching to rescuer by the handle installed, wait for rescue or for will not swimmer use, prevent water of choking, by opening tow strap, catch tow strap one end that firmly the present invention is thrown into water, to spare to rescuer, by be installed on motor and Convenient for adjusting direction direction can be adjusted, use is time saving and energy saving in propeller by remote controler.

Description

A kind of efficient waters rescue floating item based on Radio Transmission Technology
Technical field
The invention belongs to waters rescue technique fields, and in particular to a kind of efficient waters rescue based on Radio Transmission Technology Float item.
Background technique
When wrecking submarine ship person is saved oneself from ship water outlet, decompression stops time dedicated rope system buoy is grasped.By floating ball, buoy Rope and depth of water label, carbine composition.For submarine personnel with one escape danger harness carry out stage decompression method escape danger when, guide it Segmentation stops decompression and rises water outlet, and floating upward quickly is avoided to lead to dead or decompression sickness.Floating ball rigid foam or cork At being surrounded by canvas or metal thin shell outside, surface is coated with the alternate striped of red and white.Buoy rope links floating ball and hook, and is to have Indicate the label of the depth of water.Carbine is a closed hook with spring, and buoy is hung over torpedo tube when discharging floating ball Or in the fixed ring in survival capsule exit, for fixing floating ball.Rescue buoy is stored in the cabin submarine head, deck store and commander compartment. In use, by its from ship person escape danger out the torpedo tube of ship, rescue hatch discharge water outlet, buoy rope discharge length, by submarine The heavy practical depth of water for sitting seabed increases by 15%~20% and calculates.Ship person sits heavy seabed in from ship exiting water process, according to submarine in danger The depth of water and ship person residence time is being rescued according to parking depth, residence time as defined in decompression table and number of stages under high pressure Corresponding depth of water label is found on raw buoy rope, segmentation carries out stop decompression, rises water outlet paragraph by paragraph.
Compared with prior art:
Existing rescue floating item is not easy to the control in direction, and rescuer or the rescued cannot far see in the case where rescue It arrives.
Practical summary of the invention
To solve the problems mentioned above in the background art.The present invention provides a kind of efficient waters based on Radio Transmission Technology Rescue floating item has the characteristics that see convenient for control direction, convenient for remote.
To achieve the above object, the invention provides the following technical scheme: a kind of efficient waters based on Radio Transmission Technology Rescue floating item, comprising floating ontology, remote controler, one end of the floating ontology is connected with power part, the floating item The other end tail portion of ontology is connected with tow strap, and the side of the floating ontology is installed on handle, described to float the outer of an ontology Surface is installed on LED light, and wedge structure is connected in the middle part of the floating ontology, is installed on the outside of the inner end of the power part Motor, one end of the motor are installed on propeller, and the top surface of the power part is inlaid with display screen, the tail portion of the power part Diversion trench is offered, the side of the power part offers waterproof charge port, and the top middle portion of the remote controler is installed on antenna, The top two sides of the remote controler are installed on alarm button, and the top of the remote controler is installed on motor control bar, described distant The inside of control device is installed on signal projector, C-size battery respectively.
Preferably, the inside of the power part is installed on No.1 battery, receiver of remote-control sytem respectively, and No.1 battery connects respectively Water charge port, LED light, motor, display screen are taken over control, and display screen uses waterproof material, energy is distinguished by the No.1 battery installed It is enough to provide electricity to LED light, motor, display screen, and charged by waterproof charge port to No.1 battery, electricity is on a display screen It has been shown that, it is simple and clear.
Preferably, the number of the handle is two, is installed in the two sides of floating ontology respectively, is set to be streamlined Meter is convenient for catching to rescuer by the handle installed, wait for rescue or for will not swimmer use, prevent water of choking, and can lead to Opening tow strap is crossed, catches tow strap one end that firmly the present invention is thrown into water, to spare to rescuer.
Preferably, the top and bottom of the floating ontology are inlaid with several LED light, and are spelled by several LED light At the shape of arrow, the shape LED light for being combined into arrow is inlaid with by top and bottom, convenient for seeing the direction of the invention moved, Observe the position of LED light convenient for rescuer and the rescued, and carry out using.
Preferably, the shape of the wedge structure is triangular prism, and tip surface passes through setting for wedge structure towards propeller Meter drives propeller rotation convenient for accelerating motor, and improves the speed of travelling, saves electricity.
Preferably, the number of the diversion trench is two, and both ends communicate, and are cylindrical body;Pass through the water conservancy diversion opened up Slot reduces resistance, promotes speed, saves time and electricity.
Preferably, the number of the motor and motor control bar is respectively provided with two, and the motor control bar in left side and left side Motor connection, the motor on the motor control bar on right side and right side connects, and passes through the motor control bar for swinging left side forward simultaneously When with the motor control bar on right side, two motor clockwise direction rotations, forward slip of the present invention, when the horse for swinging backward left side simultaneously When up to control-rod and the motor control bar on right side, two motor reverse directions rotations, the present invention is slided backward, when only swinging one end Motor control bar, corresponding motor rotation, the present invention is deflected to corresponding side, convenient for adjusting direction, cannot be incited somebody to action in rescuer Rescue item is thrown away remote or is thrown away partially, can only pull back and throw over again, waste time, direction can be adjusted by remote controler, uses It is time saving and energy saving.
Preferably, the number of the alarm button is two, and connection signal transmitter, by pinning alarm button simultaneously When, automatic alarm is in case of emergency convenient for emergency relief.
Compared with prior art, the beneficial effects of the present invention are: being inlaid with the shape LED for being combined into arrow by top and bottom Lamp observes the position of LED light convenient for seeing the direction of the invention moved convenient for rescuer and the rescued, and carries out using logical The handle installed is crossed convenient for catching to rescuer, wait for rescue or for will not swimmer use, prevent water of choking, and opening can be passed through Tow strap, catch tow strap one end firmly the present invention is thrown into water, to rescuer it is spare, by being installed on motor and propeller just In adjusting direction, cannot throwing away remote by rescue item in rescuer or throwing away partially, it can only pull back and throw over again, waste time, can lead to It crosses remote controler and direction is adjusted, use is time saving and energy saving, when by pinning alarm button simultaneously, automatic alarm, in emergency Under, it is convenient for emergency relief.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is perspective structure schematic diagram of the invention;
Fig. 2 is structural schematic diagram of the invention;
Fig. 3 is the structural schematic diagram that the present invention overlooks section view;
Fig. 4 is remote controler half section structure diagram of the invention;
In figure: 1, floating an ontology;2, power part;3, tow strap;4, handle;5, LED light;6, wedge structure;7, display screen;8, prevent Water charge port;9, propeller;10, motor;11, No.1 battery;12, receiver of remote-control sytem;13, remote controler;14, antenna;15, it alarms Button;16, motor control bar;17, signal projector;18, C-size battery;19, diversion trench.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Fig. 1-Fig. 4 is please referred to, the present invention is the following technical schemes are provided: drift is rescued in a kind of efficient waters based on Radio Transmission Technology Floating item, comprising floating ontology 1, remote controler 13, one end of floating ontology 1 is connected with power part 2, floats the another of an ontology 1 One end tail portion is connected with tow strap 3, and the side of floating ontology 1 is installed on handle 4, and the outer surface of floating ontology 1 is installed on LED The middle part of lamp 5, floating ontology 1 is connected with wedge structure 6, is installed on motor 10 on the outside of the inner end of power part 2, and the one of motor 10 End is installed on propeller 9, and the top surface of power part 2 is inlaid with display screen 7, and the tail portion of power part 2 offers diversion trench 19, power part 2 side offers waterproof charge port 8, and the top middle portion of remote controler 13 is installed on antenna 14, and the top two sides of remote controler 13 are equal It is installed on alarm button 15, the top of remote controler 13 is installed on motor control bar 16, and the inside of remote controler 13 is installed on letter respectively Number transmitter 17, C-size battery 18.
In the present embodiment: being able to provide to LED light 5, motor 10, display screen 7 by the No.1 battery 11 installed Electricity, and charged by waterproof charge port 8 to No.1 battery 11, electricity is shown on display screen 7, it is simple and clear, pass through peace If handle 4 convenient for being caught to rescuer, wait for rescue or for will not swimmer use, prevent water of choking, and can drag by opening Rope 3, catch tow strap one end firmly the present invention is thrown into water, to rescuer it is spare, be inlaid with by top and bottom and be combined into arrow The shape LED light 5 of head observes the position of LED light 5 convenient for rescuer and the rescued convenient for seeing the direction of the invention moved, And it carries out using by the design of wedge structure 6, convenient for accelerating the drive rotation of propeller 9 of motor 10, and the speed of raising travelling Degree saves electricity, reduces resistance by the diversion trench 19 opened up, promotes speed, save time and electricity, by simultaneously to forward swing When the motor control bar 16 in dynamic left side and the motor control bar 16 on right side, two 10 clockwise direction of motor rotations, the present invention is to advancing slip It is dynamic, when the motor control bar 16 of the motor control bar 16 and right side that swing backward left side simultaneously, two 10 reverse direction of motor rotations Turn, the present invention slides backward, and when the motor control bar 16 for only swinging one end, corresponding motor 10 is rotated, and the present invention is to corresponding Rescue item cannot be thrown away remote or thrown away partially, can only pulled back and throw over again by side deflection convenient for adjusting direction in rescuer, wave It is time-consuming, direction can be adjusted by remote controler 13, use is time saving and energy saving, when by pinning alarm button 15 simultaneously, automatically Alarm is in case of emergency convenient for emergency relief.
Specifically, the inside of power part 2 is installed on No.1 battery 11, receiver of remote-control sytem 12 respectively, and No.1 battery 11 divides Not Lian Jie waterproof charge port 8, LED light 5, motor 10, display screen 7, and display screen 7 use waterproof material;Pass through the No.1 installed Battery 11 is able to provide electricity to LED light 5, motor 10, display screen 7, and is filled by waterproof charge port 8 to No.1 battery 11 Electricity, electricity is shown on display screen 7, simple and clear.
Specifically, the number of handle 4 is two, it is installed in the two sides of floating ontology 1 respectively, is airflow design; Be convenient for catching to rescuer by the handle 4 installed, wait for rescue or for will not swimmer use, prevent water of choking, and can pass through Tow strap 3 is opened, catches tow strap one end that firmly the present invention is thrown into water, to spare to rescuer.
Specifically, the top and bottom of floating ontology 1 are inlaid with several LED light 5, and it is combined by several LED light 5 The shape of arrow;The shape LED light 5 for being combined into arrow is inlaid with by top and bottom, convenient for seeing the direction of the invention moved, just Observe the position of LED light 5 in rescuer and the rescued, and carry out using.
Specifically, the shape of wedge structure 6 is triangular prism, and tip surface is towards propeller 9;Pass through setting for wedge structure 6 Meter drives propeller 9 to rotate, and improves the speed of travelling convenient for accelerating motor 10, saves electricity.
Specifically, the number of diversion trench 19 is two, and both ends communicate, and are cylindrical body;Pass through the diversion trench opened up 19 reduce resistance, promote speed, save time and electricity.
Specifically, the number of motor 10 and motor control bar 16 is respectively provided with two, and the motor control bar 16 in left side and a left side The motor 10 of side connects, and the motor control bar 16 on right side is connect with the motor 10 on right side;By the horse for swinging left side forward simultaneously Up to control-rod 16 and right side motor control bar 16 when, two 10 clockwise direction of motor rotations, forward slip of the present invention, when simultaneously to Swing afterwards left side motor control bar 16 and right side motor control bar 16 when, the rotation of two 10 reverse directions of motor, the present invention to After slide, when the motor control bar 16 for only swinging one end, corresponding motor 10 is rotated, and the present invention is deflected to corresponding side, just In adjusting direction, cannot throwing away remote by rescue item in rescuer or throwing away partially, it can only pull back and throw over again, waste time, can lead to It crosses remote controler 13 and direction is adjusted, use is time saving and energy saving.
Specifically, the number of alarm button 15 is two, and connection signal transmitter 17;By pinning alarm button simultaneously When 15, automatic alarm is in case of emergency convenient for emergency relief.
The working principle of the invention and process for using: it when in use, is turned on the switch by remote controler 13, is pinned simultaneously first Two alarm buttons 15, alarm, and tow strap 3 is opened, and one end of tow strap 3 is caught to fling, and Xiang Shuizhong of the present invention is thrown away, and lead to Motor 10 is adjusted, to adjust direction of the invention, so that the present invention is moved about to rescued direction, use is time saving and energy saving, by upper and lower Face is inlaid with the shape LED light 5 for being combined into arrow, convenient for seeing the direction of the invention moved, sees convenient for rescuer and the rescued The position of LED light 5 is observed, and is carried out using being convenient for catching to rescuer by the handle 4 installed, wait for rescue or for will not Swimmer uses, and prevents water of choking, and can catch tow strap one end that firmly the present invention is thrown into water, to wait rescue by opening tow strap 3 The person of helping is spare, and rescuer draws tow strap to make to pull on bank to rescuer.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features. All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims (8)

1. it is a kind of based on Radio Transmission Technology efficient waters rescue floating item, it is characterised in that: comprising floating ontology (1), One end of remote controler (13), floating ontology (1) is connected with power part (2), the other end tail of floating ontology (1) Portion is connected with tow strap (3), and the side of floating ontology (1) is installed on handle (4), the appearance of floating ontology (1) Face is installed on LED light (5), is connected with wedge structure (6) in the middle part of the floating ontology (1), the inner end of the power part (2) Outside is installed on motor (10), and one end of the motor (10) is installed on propeller (9), and the top surface of the power part (2) is inlayed Have display screen (7), the tail portion of the power part (2) offers diversion trench (19), and the side of the power part (2) offers waterproof The top middle portion of charge port (8), the remote controler (13) is installed on antenna (14), and the top two sides of the remote controler (13) are pacified Equipped with alarm button (15), the top of the remote controler (13) is installed on motor control bar (16), the remote controler (13) it is interior Portion is installed on signal projector (17), C-size battery (18) respectively.
2. a kind of efficient waters rescue floating item based on Radio Transmission Technology according to claim 1, it is characterised in that: The inside of the power part (2) is installed on No.1 battery (11), receiver of remote-control sytem (12) respectively, and No.1 battery (11) connects respectively Water charge port (8), LED light (5), motor (10), display screen (7) are taken over control, and display screen (7) uses waterproof material.
3. a kind of efficient waters rescue floating item based on Radio Transmission Technology according to claim 1, it is characterised in that: The number of the handle (4) is two, is installed in the two sides of floating ontology (1) respectively, is airflow design.
4. a kind of efficient waters rescue floating item based on Radio Transmission Technology according to claim 1, it is characterised in that: The top and bottom of floating ontology (1) are inlaid with several LED light (5), and are combined into arrow by several LED light (5) Shape.
5. a kind of efficient waters rescue floating item based on Radio Transmission Technology according to claim 1, it is characterised in that: The shape of the wedge structure (6) is triangular prism, and tip surface is towards propeller (9).
6. a kind of efficient waters rescue floating item based on Radio Transmission Technology according to claim 1, it is characterised in that: The number of the diversion trench (19) is two, and both ends communicate, and are cylindrical body.
7. a kind of efficient waters rescue floating item based on Radio Transmission Technology according to claim 1, it is characterised in that: The number of the motor (10) and motor control bar (16) is respectively provided with two, and the horse of motor control bar (16) and left side in left side It is connected up to (10), the motor control bar (16) on right side is connect with the motor (10) on right side.
8. a kind of efficient waters rescue floating item based on Radio Transmission Technology according to claim 1, it is characterised in that: The number of the alarm button (15) is two, and connection signal transmitter (17).
CN201910735750.6A 2019-08-09 2019-08-09 A kind of efficient waters rescue floating item based on Radio Transmission Technology Pending CN110395370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910735750.6A CN110395370A (en) 2019-08-09 2019-08-09 A kind of efficient waters rescue floating item based on Radio Transmission Technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910735750.6A CN110395370A (en) 2019-08-09 2019-08-09 A kind of efficient waters rescue floating item based on Radio Transmission Technology

Publications (1)

Publication Number Publication Date
CN110395370A true CN110395370A (en) 2019-11-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910735750.6A Pending CN110395370A (en) 2019-08-09 2019-08-09 A kind of efficient waters rescue floating item based on Radio Transmission Technology

Country Status (1)

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CN (1) CN110395370A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107472482A (en) * 2017-09-09 2017-12-15 松力(广东)电子科技有限公司 A kind of water survival gear
CN206841680U (en) * 2017-06-06 2018-01-05 马诗聪 A kind of remote control lifeboat that can quickly move
CN107672766A (en) * 2017-11-03 2018-02-09 浙江柳晶整流器有限公司 A kind of Simple portable water rescue device
CN109250048A (en) * 2018-11-02 2019-01-22 珠海云洲智能科技有限公司 Power brucker survival capsule
CN109263836A (en) * 2018-11-14 2019-01-25 王春雨 A kind of remote-controlled lifebuoy of self-powered system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206841680U (en) * 2017-06-06 2018-01-05 马诗聪 A kind of remote control lifeboat that can quickly move
CN107472482A (en) * 2017-09-09 2017-12-15 松力(广东)电子科技有限公司 A kind of water survival gear
CN107672766A (en) * 2017-11-03 2018-02-09 浙江柳晶整流器有限公司 A kind of Simple portable water rescue device
CN109250048A (en) * 2018-11-02 2019-01-22 珠海云洲智能科技有限公司 Power brucker survival capsule
CN109263836A (en) * 2018-11-14 2019-01-25 王春雨 A kind of remote-controlled lifebuoy of self-powered system

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Application publication date: 20191101