48 results about "Storm wave" patented technology

The invention relates to a full-plastic airtight modularized airlift light biological reactor in the biological field, which is characterized in that a full-plastic transparent barrel part (1) uses adhesives, a full-plastic transparent base (3) is fixed to form a container, and a drain hole is arranged on the full-plastic transparent base (3) and connected with a full-plastic water valve to form a collection water outlet (17). A full-plastic transparent top cover (2) is firmly connected with the full-plastic transparent barrel part (1) through a full-plastic closed bolt (14) and a full-plastic sealing part (15) so as to form a full-plastic airtight light biological reaction tank body. The full-plastic airtight modularized airlift light biological reactor solves problems that complex coastal environment of our country, large changes of sea water temperature and large storm waves bring difficulty to microalgae outdoor breeding, light cannot penetrate through water when a planar culture pond is deep by adopting the planar culture pond mode, microalgae at the bottom of the planar culture pond cannot absorb enough light and breeding output efficiency caused by insufficient circularly stirring is reduced .

A dolabriform bow high-speed boat model adhered with wave-elimination-damping wings comprises a dolabriform bow, wherein two symmetrically distributed wave-elimination-damping wings are installed below waterlines on two sides of the dolabriform bow. When a boat sails on the peaceful sea surface or in small storm waves, the wave-elimination-damping wings have a wave-elimination effect, and a lifting force is generated on the wave-elimination-damping wings to raise a boat body, reduce contact area of the boat body and water and reduce friction resistance. Simultaneously, waves generated by the wave-elimination-damping wings and boat-shaped waves can mutually generate favorable interference to reduce wave-making resistance. Effects of the two aspects enable traveling resistance of the boat to be remarkably reduced. When the boat sails in large storm waves, the wave-elimination-damping wings have a damping effect on vertical motion of the boat in waves, so that the boat with the dolabriform bow can have small vertical accelerated speed and small vertical motion amplitude, and seakeeping performance of the dolabriform bow boat model is further improved.

The invention discloses a large floating type steel structure intelligent fishery breeding net cage suitable for a deep and far sea. The large floating type steel structure intelligent fishery breeding net cage comprises a net cage body, a netting, a mooring system, a first upper building structure and a second upper building structure; the net cage body is a steel structure frame, has a cross section of a regular hexagon structure, and is internally provided with bait bins; the netting is attached to the net cage body; a periphery of the net cage body is fixed to a seabed through the mooring system; and the first upper building structure and the second upper building structure are arranged on two sides of a top part of the net cage body respectively, an automatic feeding system, a netting cleaning system and a fish collecting system are arranged in the first upper building structure, and a central control room is arranged in the second upper building structure. The net cage body of the steel structure can effectively resist severe storm waves in deep and far sea areas, labor cost is greatly reduced through an automatic intelligent fishery breeding device carried on the net cage, and profits of deep and far sea fishery breeding are increased.

The invention discloses a four stand column-stabilizing multifunctional floating platform comprising an underwater equipment cabin and a ballast compartment, a water deck, a deck room and stand columns connecting the underwater equipment cabin and the water deck. Advantages of a traditional semi-submerged platform and a marine environment monitoring buoy are combined in the four stand column-stabilizing type multifunctional floating platform; the floating platform requires lower manufacturing cost compared with the semi-submerged platform and is easier to maintain, and compared with the buoy,the floating platform has stronger resistance of storm waves, longer service life and simpler structural profile, and can monitor more marine elements, has a deeper work area range, greater automaticcontrol degree and more comprehensive functions. The four stand columns are circumferentially arranged; square stand columns applied by a traditional large semi-submerged platform are replaced by round columns, so a water plane area can be reduced, so effects to a platform body by waves can be reduced and motion response can be lowered; and the floating platform can carry various equipment; and multifunctionality of the floating platform can be achieved according to the variety of carried equipment.

The invention discloses an unmanned vessel for favorably resisting storm waves and provides an unmanned vessel which is good in wave resistance, high in stability and endurance and flexible in changing of center of gravity. For solving the technical problems in the prior art, the unmanned vessel for favorably resisting storm waves adopts the technical solution that the unmanned vessel for favorably resisting storm waves comprises a central main hull and a sub-hull. The central main hull and the sub-hull are each provided with an equipment control system, an energy supply system, a communication and positioning system and a dynamic propulsion system. The unmanned vessel is provided with a sheltering device for coping with harsh environments such as heavy storm waves on the water surface. The sheltering device comprises a central sub-module and three secondary sub-modules. The central sub-module of the sheltering device mainly comprises a lifting device arranged on the upper part of a main hull cabin and an inflow and drainage device arranged inside the main hull. The three secondary sub-modules of the sheltering device mainly comprise ejecting devices arranged at the center of the sub-hull. The unmanned vessel for favorably resisting storm waves is applied to the technical field of unmanned vessels.

The invention discloses a floating algal reef. The floating algal reef can effectively carry out concentrated alga seedling putting, is good in protective effect, has the reasonable alga growth environment and can effectively protect and store algae which are hit by heavy storm waves. The floating algal reef comprises a whole frame, a sea surface floating body and a recycling cable. A plurality of brick grooves are formed in the whole frame, algal bricks are arranged in the brick grooves, brick pulling cables are arranged on the algal bricks, a main middle column is arranged on the whole frame and connected to the sea surface floating body, a plurality of tensioning bodies are arranged on the main middle column, the brick pulling cables are connected to one tensioning body, the brick pulling cables are in the tensioned state, one section of each brick pulling cable is wound around the corresponding tensioning body connected with the brick pulling cable, the tensioning bodies are a set of rotating drums arranged on the main middle column, and the tensioning bodies are fixed to the main middle column through fixing parts. The floating algal reef has the advantages that initial stage protection can be achieved for seedlings, losses caused by alga damage can be lowered when heavy storm waves come, and alga harvesting and whole frame reuse are convenient.

The invention discloses an offshore floating type wave power generation device based on a pendulum oscillation principle. The offshore floating type wave power generation device comprises a shell, a permanent magnet sphere, a coil inlay, an omnidirectional balance ring and a power storage device. The shell comprises an upper shell body and a lower shell body, the upper shell body and the lower shell body can be fixed in a sealed butt joint mode through end flanges, and an oval or approximately oval cavity is formed in the shell. The permanent magnet sphere is arranged in the shell, and the left and right ends of the permanent magnet sphere are fixed in the middle of the shell; the coil inlay is arranged in the permanent magnet sphere and clings to the permanent magnet sphere; the coil inlay comprises a coil body and a coil bundle; the omni-directional balance ring comprises an outer balance ring, an inner balance ring and a rotating shaft; the omni-directional balance ring is arranged in the coil embedded body; the electricity storage device comprises a rectification circuit board and a battery. The device is suitable for the situation of large storm waves in open sea, the balance ring in the device senses motion and continuously cuts magnetic lines, and therefore continuous electric power is generated to charge the battery.

The invention provides a multifunctional buoy device for water surface monitoring. The device comprises a disc-shaped floating platform, a cavity is formed in the center of the floating platform, a horizontal sliding plate is connected into the cavity in a sealed and sliding mode, a pull rod penetrates through the center of the bottom of the floating platform and is connected with the center of the bottom of the floating platform in a sealed and sliding mode, the upper end of the pull rod is welded to the bottom face of the sliding plate, the lower end of the pull rod is connected with an anchor block through an anchor chain, and the center of the top of the floating platform is fixedly connected with a monitoring box. The buoy device has the advantages that when the buoy device encounters large storm waves, the sliding plate in the cavity slides downwards to squeeze air below the sliding plate into all sliding cavities through the pulling force of the anchor chain on the pull rod, a piston plate and a connecting rod are pushed to slide outwards according to the pneumatic transmission principle, a number of floating balls extend outwards to enlarge the diameter of the whole buoy device so as to enlarge the buoyancy area and lower the gravity center, so that the stability of the buoy is improved, and tipping is avoided.

The invention discloses a water rescue device, and belongs to the field of rescue equipment. The device comprises two ship bodies which are parallel to each other and are arranged side by side, wherein a gap is reserved between the two ship bodies; a connecting plate is arranged between the two ship bodies and connects the two ship bodies, wherein the connecting plate is telescopic; a telescopic driving unit arranged between the two ship bodies, connects the two ship bodies, wherein drives the two ship bodies to be close to or away from each other; and two stern driving units arranged at the tails of the ship bodies correspondingly, wherein the ship bodies are driven by the stern driving units to travel. In the rescue process, when a narrow river channel is encountered, the distance between the two ship bodies is reduced by controlling the telescopic driving unit, the ship bodies can directly pass through the narrow channel, when strong storm waves are encountered or the loading capacity requirement is large, the distance between the two ship bodies is increased by controlling the telescopic driving unit, the connecting plates are unfolded, impact force can be buffered, and the ship bodies are kept balanced; and rescue workers can sit on the connecting plate, and more materials can be placed on the connecting plate, so that the rescue efficiency is improved.

The invention discloses a vehicle-mounted pyramid-shaped quick lifesaving drifting device, relates to a waterproof lifesaving device, and provides the vehicle-mounted pyramid-shaped quick lifesaving drifting device with the functions of preventing flood, heavy storm wave and the like. The device comprises umbrella surfaces 1, umbrella ribs 2, an umbrella handle 3 and a bottom surface 4, and is characterized in that the bottom surface 4 is polygonal; the umbrella surfaces 1 are triangular; the umbrella surfaces 1 and the bottom surface 4 form a pyramid. The construction space of the pyramid is small, the manufacturing cost is low, the device can be used by a small number of people, and the pyramid is steady in construction and is not easy to turn over; the device is convenient to carry in a vehicle, is flexible and quick to use, and has the functions of preventing the flood, the heavy storm wave and the like; the problems that an existing water lifesaving device such as a lifesaving boat, a lifesaving raft and a lifesaving tent needs to be inflated for use and is inconvenient to carry in a family sedan are solved.

A system for improving stability of a port ship based on coupling of wave diaphragm devices and waves is characterized in that two water bursting pipes and diaphragm boxes form the wave diaphragm devices, the multiple wave diaphragm devices are arranged at intervals along the lower portion of a ship side of the ship, an electric push rod is connected with the diaphragm boxes and a rotation driving device, and the rotation driving device is connected with the ship side; the residual pressure detector and the distance sensor are electrically connected with an attitude system of the ship, the gas pressure sensor is electrically connected with a water pressing system of the ship, the electric push rod is electrically connected with a draught system of the ship, and the rotation driving device is electrically connected with an observation system of the ship. The water pressing system carries out water pressing on the corresponding cabin section according to the triggering direction of the gas pressure sensor, the sensing frequency of the distance sensor and the set value of the residual pressure detector are coupled, the posture of the ship is adjusted, the ship is in the top wave or forward wave state, and therefore loading and unloading stability of the ship under the heavy storm wave condition is guaranteed.

The invention relates to a waterproof rescue device, and provides a cylindrical vehicular rapid rescue drifting device with multiple functions of preventing flood, preventing heavy storm wave and the like. The device comprises a top surface 1, umbrella ribs 2, an umbrella handle 3, a bottom surface 4 and lateral surfaces 7 and is characterized in that the top surface 1 and the bottom surface 4 are completely identical circular surfaces; and the top surface 1, the bottom surface 4 and the lateral surfaces 7 form a cylinder. The cylindrical structure space is large and can accommodate multiple people, and the cylindrical structure is relatively stable, is unlikely to overturn and can be used in any direction; the device can be conveniently carried by a car, is flexible and fast in use, has the functions of preventing flood and preventing heavy storm wave, and solves the problems that the existing overwater rescue devices such as lifeboats, life floats and life tents can be used by inflating and are inconvenient to carry in family cars.

The invention discloses a portable auxiliary device for a pilot to get on and off a ship. The device comprises a hanging basket body arranged on one side of a cargo ship, a hanging basket driving device fixedly arranged on a deck of the cargo ship and a hanging basket adsorption device which is adsorbed to a ship side of the cargo ship and can move up and down; the hanging basket driving device is connected to a driving rope used for lifting and placing the hanging basket and a cable rope used for supplying power to the hanging basket adsorption device; and the hanging basket body is connected to the hanging basket adsorption device through a safety rope. The portable hanging basket device is arranged to assist the pilot in getting on and off a ship, so that the high-strength physical strength required by the pilot in climbing the pilot ladder can be saved, and the risk of getting on and off the ship by the pilot under severe weather conditions such as heavy storm waves can be reduced.

The invention discloses a wave blocking device for hydraulic engineering construction, and belongs to the technical field of equipment for hydraulic engineering construction. The wave blocking device comprises a blocking shell, a wave blocking block is arranged on the left side of the inner cavity of the blocking shell, a floating block is arranged at the lower end of the wave blocking block, a plurality of water inlet holes are densely distributed in the upper side of the right end face of the blocking shell, a plurality of drainage holes are formed in the lower side of the blocking shell, and a balance weight cushion block is arranged on the bottom face of the blocking shell. According to the wave blocking device for hydraulic engineering construction, through cooperation of the wave blocking block arranged on the left side of the inner cavity of the blocking shell, the floating block at the lower end of the wave blocking block, the multiple water inlet holes in the upper side of the right end face of the blocking shell and the balance weight cushion block on the bottom face of the blocking shell, the wave blocking block can automatically rise when wind is heavy and waves are urgent, and large storm waves are shielded, and the adverse effect of the storm waves to the construction of hydraulic engineering is prevented; and moreover, the wave blocking block can ascend and descend, so that workers can transport the wave blocking device for hydraulic engineering construction conveniently, and the applicability is high.

The invention aims to provide an anti-storm elbow for a deepwater net cage, aiming at solving a series of problems that the corners of a polygonal or square net cage in the prior art are broken when stormy waves come and the like due to stress concentration at the corners of the polygonal or square net cage, so that the overall anti-storm capacity of the net cage with a square or polygonal structure is improved. The anti-storm elbowfor the deepwater net cage is produced by dividing the elbow into two parts, and each part comprises a main body, a partition plate, a steel sheet, a steel wire rope, a lifting ring screw, a lifting ring nut, a screw, a nut, a rubber pad and an aluminum sleeve. The main body and the partition plate are made of a high-density polyethylene material and are integrally formed in an injection molding machine through an injection molding process. The two parts are connected into a flexible whole through a spring. The anti-storm elbow for the square net cage is a flexible connecting body, and when the net cage encounters storm waves, the flexible connecting elbow can enable floating pipes around the net cage to swing and fluctuate along with the storm waves within a certain range, so that the storm force of typhoon to the net cage is eliminated to a certain extent, the direct action of large waves and wind force to the net cage is relieved, and the anti-storm capacity of the net cage is improved.

The invention provides a multi-hull ship. The multi-hull ship comprises a main hull and sheet bodies symmetrically arranged at the bottoms of the two sides of the main hull. The blade body is streamlined, and a water-jet propeller is arranged at the tail of the blade body; the sheet bodies are connected with the main ship body through damping mechanisms. The multi-hull ship is of a composite hull design, and the sailing stability and rapidity of a catamaran and the high load-carrying capacity of a common ship type are considered at the same time. The damping mechanism is additionally arranged, meanwhile, the sheet bodies and the main ship body are movably connected, and the degree of freedom between all the parts is improved, so that the ship body deforms under large storm waves, the main ship body is kept stable in cooperation with the damping mechanism, ship body swaying caused by the storm waves is reduced, and the adaptability of the ship body to the water condition is improved. Meanwhile, fewer parts and modular design are adopted, and each module is simple in structure, high in universality, capable of being quickly disassembled and assembled and easy to transport and store. All parts of the ship body are made of high-strength light materials, so that the self weight is reduced, and the bearing capacity is improved.

The invention relates to the technical field of water surface power generation, and particularly relates to portable water surface power generation equipment easy to change the mounting position. The equipment comprises a top buoy and a bottom buoy, and at least one pair of side surface connecting seats are symmetrically arranged on the left side and the right side of the top buoy; and a water surface power generation device for generating power by utilizing energy pushed forwards by waves is fixedly mounted on the side connecting seat, and a console is fixedly mounted on the top buoy. The design form that the top buoy and the bottom buoy are arranged in a split mode is adopted so that energy generated by forward pushing of waves and energy generated by water surface height changes caused by the waves can be more efficiently utilized for power generation; the top buoy can automatically adapt to the water surface height and is prevented from being submerged when the water surface height changes due to tide, rainstorm weather or seasonal climate so that the top buoy can be mounted in water body environments with various proper depths, especially shallow seas or rivers with large storm waves and obvious water surface depth changes; meanwhile, storage, transportation and reinstallation are easy.

The invention discloses an anti-pollution belt for a water body. The anti-pollution belt comprises a belt body and a plurality of floating assemblies installed on the belt body, wherein each floatingassembly comprises a floating body, a first balance weight and a second balance weight. The floating bodies are in a triangular prism shape, containing cavities are formed in the floating bodies, thebelt body is arranged in the containing cavities, and the section of each floating body is in an isosceles triangle shape. The surfaces of each floating body include the bottom surface and the two oblique surfaces, and linear openings are formed in the bottom surfaces in the length direction of the corresponding floating bodies. The containing cavities are communicated with the outside through theopenings, the first balance weights and the second balances weights are arranged on the bottom surfaces at intervals, and gaps between the first balance weights and the second balance weights are communicated with the openings. The first balance weights and the second balance weights of the anti-pollution belt for the water body are arranged on the bottom surfaces of the floating bodies so that the floating assemblies can stand on the water surface and can keep a steady posture to withstand storm waves to a certain extent; the two oblique surfaces of each floating body have a large height, sothat the oblique surfaces have a large intercept area. The floating assemblies are connected in series through the belt body to form a whole body, and the floating assemblies are convenient to maintain and replace.

The invention discloses a vehicle-mounted circular truncated cone-shaped quick lifesaving drifting device, relates to a waterproof lifesaving device, and provides a multifunctional vehicle-mounted circular truncated cone-shaped quick lifesaving drifting device. The device comprises an upper bottom surface 1, umbrella ribs 2, an umbrella handle 3, a lower bottom surface 4 and side surfaces 7, and is characterized in that the upper bottom surface 1 and the lower bottom surface 4 are circular and are parallel to each other; the area of the lower bottom surface 4 is greater than that of the upper bottom surface 1; the upper bottom surface 1, the lower bottom surface 4 and the side surfaces 7 form a circular truncated cone. The construction space of the device is large, a large number of people can be accommodated, the circular truncated cone is steady in construction, and the device is prevented from turning over, can be used horizontally and longitudinally, is convenient to carry in a vehicle, is flexible and quick to use, and has the functions of preventing flood and heavy storm wave; the problems that an existing water lifesaving device such as a lifesaving boat, a lifesaving raft and a lifesaving tent needs to be inflated for use and is inconvenient to carry in a family sedan are solved.

The invention discloses a water quality detection unmanned ship, and belongs to the technical field of unmanned ships. The water quality detection unmanned ship comprises an unmanned detection ship body, a first storage reel is installed in the unmanned detection ship body, a wire body is wound on the surface of the first storage reel, a protective shell is connected to the bottom end of the wire body, a balancing weight is connected to the bottom end of the protective shell, and a vibration mechanism is installed in the protective shell. Water surface buoyancy borne by the whole structure is greatly increased, a second floating plate can be contracted when no storm waves exist, at the moment, the contact area of the whole structure and the water surface is reduced, then the stability of the whole structure is greatly improved, and water quality detection and storage of the monitoring ship are facilitated; errors generated in the water quality detection process due to shaking of the ship body are reduced.

The invention discloses a nuclear power plant anti-typhoon influence assessment method and system, and the method comprises the steps: determining a typhoon level corresponding to a nuclear power plant site item wind resistance assessment reference according to a typhoon level corresponding to a nuclear power plant site item original wind load design reference wind speed and a nuclear power plant site item anti-typhoon target level; determining a wind pressure influence scene of the nuclear power plant influenced by a typhoon according to the typhoon level corresponding to the wind resistance evaluation benchmark of the site item of the nuclear power plant; according to the plant site item type of the nuclear power plant, determining a flying object influence scene; determining a flooding influence scene according to storm surge, rainfall and storm wave data of the nuclear power plant site; and respectively carrying out prevention and resistance capability analysis on the nuclear power plant site item in the three scenes, and judging the influence condition of the typhoon on the nuclear power plant site item in each scene. The method has universality and can provide reference for wind resistance improvement of the nuclear power plant so as to reduce the influence of typhoon on the nuclear power plant and improve the safety and usability of the nuclear power plant.

The invention relates to the technical field of cable protection equipment, in particular to a marine high-performance rubber and plastic sheath material and a preparation process thereof. The marine high-performance rubber and plastic sheath material comprises the following raw materials in percentage by weight: 12-17% of hydrogenated nitrile rubber, 3-6% of rare earth, 45-50% of attapulgite, 0.5-1.5% of a lubricant, 1-1.5% of an antioxidant, 6.5-7.5% of a flexibilizer, 11-13% of a flame retardant, 2-3% of a coupling agent, 2-3% of a compatilizer, 1-2% of a light stabilizer and 1.5-2.5% of color master batch. The material is made of hydrogenated nitrile rubber, has excellent oil resistance, corrosion resistance, low temperature resistance, high temperature resistance, oxidation resistance, dynamic fatigue resistance and ozone resistance, can resist high temperature of 150-170 DEG C, has cold resistance superior to that of fluororubber, has acid resistance and oil resistance 5 times that of common NBR, and adapts to marine environments such as high salt, heavy storm waves, strong ultraviolet rays, high water pressure, marine organisms, dynamic loads and the like.

The invention discloses a wave compensation ship and a compensation method thereof.The ship comprises a ship-shaped main body used for sailing, a deck platform and compensation devices, the compensation devices are used for conducting wave compensation on the deck platform, the ship-shaped main body comprises a plurality of ship body units and buffer connecting devices, and the compensation devices are arranged between the ship body units and the deck platform; the buffer connecting device comprises a first servo cylinder, the first servo cylinder comprises a fixed pair and a movable pair, the movable pair is sleeved with a spring damper, one end of the spring damper is connected with the fixed pair, the other end of the spring damper is fixedly connected with the movable pair, the fixed pair is hinged to the side face of one ship body unit, and the movable pair is hinged to the side face of the other ship body unit. A plurality of mutually connected ship body units are arranged for compensating the deck platform, compensation is more flexible, buffer connecting devices are adopted between the ship body units, transverse compensation can be achieved through stretching and retracting of the buffer connecting devices, the compensation range is widened, and the stability keeping capacity of the ship body when the ship body encounters strong transverse storm waves is improved.

The invention relates to a waterproof lifesaving device, and provides a quick lifesaving rafting device for a cuboid automobile, which has the functions of preventing flood, preventing heavy storm waves and the like. The quick lifesaving rafting device for the cuboid automobile comprises five umbrella surfaces 1, umbrella bones 2, an umbrella handle 3 and a bottom surface 4, and is characterized in that the upper umbrella surface 1 and the bottom surface 4 are rectangles, and the areas of the remaining opposite umbrella surfaces 1 are equal; the umbrella bones 2 are connected with the umbrella surfaces; the umbrella handle 3 is connected with the umbrella bones 2; one edge of the bottom surface 4 is connected with the bottom edge of the umbrella surface 1; the other three edges of the bottom surface 4 are not connected with the bottom edge of the umbrella surface 1. The cuboid structure of the quick lifesaving rafting device for the cuboid automobile is large in space, and can accommodate a plurality of people; the cuboid structure is relatively stable and is not easy to overturn; the quick lifesaving rafting device is conveniently carried by the automobiles, and is used flexibly and quickly, has the functions of preventing the flood and preventing the heavy storm waves; the problems that existing water lifesaving devices, such as lifesaving boats, lifesaving rafts and lifesaving tents, can only be used after being inflated, and is inconveniently carried by a household car are solved.

The invention discloses an ecological slope protection supporting structure for a water conservancy project. The ecological slope protection supporting structure comprises a river slope, a bottom plate, a first screw, a second screw, a third screw, a first mounting base, a supporting rod, a first baffle, a buffer layer, a second mounting base, a first connecting rod, a buffer device, a first mounting plate, a first fixing block, a motor, a screw rod, a sliding rail, a screw block, a second sliding block, a fixing block and a lifting device. The supporting structure is reasonable and simple in structure, low in production cost, convenient to install and complete in function, and by arranging the bottom plate, the first screw, the second screw, the third screw, the first installation base and the supporting rod, the complex phenomenon in the installation process is avoided, and rapid installation is conducted; through the motor, the screw rod, the sliding rail, the screw block and the sliding block II, heavy storm waves can be effectively blocked; and by arranging the buffer device, the phenomenon that the river bank collapses due to long-time water flow scouring can be prevented.

The invention provides a modularized small boat collecting and releasing device which is sequentially composed of a top collecting mechanism, a middle auxiliary positioning mechanism and a lower supporting base from top to bottom, a winch used for collecting and releasing the lower supporting base is installed on the top collecting mechanism, and the winch is provided with a plurality of steel wire ropes penetrating through the middle auxiliary positioning mechanism to be connected with the lower supporting base; the middle auxiliary positioning mechanism is provided with a floating body frame, a plurality of wave passing holes are formed in the side wall of the floating body frame, a plurality of buffering guide rollers are arranged along the inner wall of the floating body frame, and a plurality of longitudinal penetrating holes allowing steel wire ropes to penetrate through are formed in the floating body frame. At least two pairs of self-adaptive supporting bases are arranged on the lower supporting base, and a plurality of vertical positioning supporting columns are arranged on the side edge of the lower supporting base. The device has low requirements on ships, is suitable for various ships, is small in deck occupied area, does not need to be fixedly mounted, is flexible and convenient to store, is high in sea condition adaptability, and can stably and safely retract and release the boat under the condition of heavy storm waves.